Method for receiving multiple-beam signal, method for searching for and method for generating soft decisions in case of receiving multiple-beam signal and devices, containing implementations of said method

FIELD: radio engineering.

SUBSTANCE: implementation of soft decisions generating method in case of receiving multi-beam signal allows substantial decrease of complication level of receiver, because it contains lesser amount of one-beam receivers, than a prototype.

EFFECT: increased interference resistance and increased capacity of communications system during receiving of multiple-beam signal due to efficient periodic procedure of renewal of multiple-beam signal components when receiving estimates of components search, also considering mutual influence of signal components.

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The invention relates to the field of radio engineering, in particular to methods of reception of multipath signal in communication systems with code division of channels and can be used in the receiving device base and mobile (subscription) stations.

In systems of mobile communication channels of signal propagation between the transmitter and receiver data are multipath and non-stationary. The time delays of multipath component of the signal are in some temporary uncertainty ranges (the area of multipath). The effectiveness of communication systems is largely determined by the ability of search algorithms, timing, and data processing to provide in nonstationary multipath channels required quality of the received information.

Code division of channels in communication systems is carried out, for example, using the code expanding pseudo-random sequences (SRP) and can be used in the receiving device base and mobile (subscription) stations.

The delay interval between any two rays in the multipath is convenient to measure in chips SRP.

Chip SRP is the duration of one elementary time interval pseudo-random sequence.

In communication systems with code division multiplexing in multipath conditions for improving the surveillance of the quality of communication using multibeam (RAKE) receivers, which produces a weighted summation of the output signals of the combined single-beam receivers that are configured on the signals of the detected radiation.

There is a method of multipath reception, described in patent EP 1041725 A2 "RAKE receiver", H 04 B 1/707, October, 04, 2000.

Described in patent method consists in the following. Periodically searches for temporary positions (delay) of the signal beams of the base station, receiving an initial assessment of the temporary provisions of the signal beams. On each search period estimate the maximum power of the rays of base stations and opt for the communication base station with the highest power beam. Estimate the time delays of the signals detected rays of the selected base station. In single-beam receivers for all signals rays selected base station receives the soft decision information symbols and combine these soft decisions by weighted summation.

Proposed in this patent approach allows you to effectively receive and improve the quality of receiving information through periodic analysis of the field of multipath propagation and use for communication, the base station, the signal which has the greatest energy.

There is a method of multipath reception, described in patent EP 0877493 A2 "Synchronization in a multipath spread spectrum communication receiver", H 04 B 1/77, November, 11, 1998.

Described in patent method consists in the following. Carry out reception of multipath signal at two spaced antennas. In the area of multipath in several stages to produce a preliminary search of the signal beams, spaced from each other on the chip and more. At each stage produce a component that has the highest correlation response. Interval analysis for each time delay when the search signal beams is selected depending on the correlation time, which is judged by the average period of fading. For the detected signals rays, separated from each other on the chip, and more, make tracking time delay, get soft decision information symbols and combine these soft decisions by weighted summation.

Proposed in this patent, the approach allows to provide effective information is received, first, due to the spatial separation, and secondly, through the use of for processing uncorrelated multipath component of the signal separated by time on the chip and more and, thirdly, through the use of adaptive interval analysis when searching for signals rays.

There is a method of multipath reception, described in U.S. patent No. 5490165 "Demodulation Element Assignment in a System Capable of Receiving Multiple Signals", H 04 B 1/69, Feb.6, 1996.

Describes how Zack is udaetsya in the following. Make a preliminary search of temporary regulations (delay) of the signal beams, receiving the initial evaluation of the temporary provisions of the signal beams. For each detected beam handle the process of tracking time delay signal and receive updated assessments of the time delay. In single-beam receivers for the detected signals rays with refined estimation of the time delay to receive the soft decision information symbols and combine these soft decisions by weighted summation.

The known method of reception of multipath signal shown in the patent of Russian Federation № 2168274.

The described method consists in the following. Periodically make a preliminary search of temporary regulations (delay) of the signal beams in the range multipath receiving an initial assessment of the temporary provisions of the signals rays.

For each subsequent period search form region multipath, as the interval of time delays with respect to the provisional regulations discovered during the initial search signal with the maximum level. Border region multipath is determined by the characteristics of the communication channel.

For each signal beam to produce an assessment of its time delay. For signals rays are soft decision information symbols and combine them by weighted sums of the simulation.

Proposed in this patent approach allows us to efficiently provide information reception in multipath signal by adapting to the changing propagation conditions in the communication channel, due to the periodic scope multipath, periodic search and use for each period of the renewed rays.

The disadvantage of the proposed approach to signal processing in the above-mentioned patents is that during the procedure of search signals rays are not taken into account the influence of the multipath component of the signal on each other. In the result, the probability of erroneous detection signals rays. In addition, it is not necessary to optimize the number of signals rays, which are used to obtain soft decision information symbols, which leads to high requirements for hardware implementation without increasing the quality of the allocated information.

Closest to the proposed solution is the way of the reception of multipath signals and device for its implementation, described in the patent of the Russian Federation No. 2120180.

The described method of reception of multipath signals prototype is as follows:

Determine the time domain multipath.

Periodically determine the number and time delay multipath component of the signal, which performs the following operations:

- P is avodat search signal in multipath and determine the grade of search of numbers and the time delay multipath component of the signal.

- Updated form number and time delay multipath component of the signal, then:

- form an aggregate component, consisting of a multipath component of the signal of the previous period and the maximum power search components;

- formed from the aggregate component exclude the minimum power component. Updated time delay multipath component of the signal is equal to the delay component of the aggregate.

- Find the time delays of multipath component of the signal current period, specifying the updated time delay multipath component of the signal.

Form soft decision information symbols using found time delay multipath component of the signal.

Enlarged structural diagram of a device for implementing the method of the prototype is shown in figure 2. Detailed structural diagram of the prototype is shown in figure 1.

In figure 1 the following symbols are used:

1-1 - 1-L - receivers of data

2-1 - 2-L - multipliers,

3 - scheme of determining of weight coefficients,

4 - adder,

5 - the decisive schema

6-1 to 6-M receivers cluster

7-1 to 7-M - multipliers,

8 is a diagram of the detection and analysis of cluster beams,

9 receiver search

10 - switch

11 - control.

Figure 2 indicated:

11 is a block from the management,

12 - unit search

13 is a multichannel receiver data

14 is a diagram combining soft decisions

15 - block formation of soft decisions.

Enlarged structural diagram of the device of the prototype contains the search block 12, which includes a receiver search 9 and diagram of the detection and analysis of cluster beams 8, multichannel data receiver 13 containing L data receivers 1-1 - 1-L and M receivers cluster beams 6-1 to 6-M and the switch 10, the control unit 11, and a scheme combining soft decisions 14, which includes the multipliers 2-1 to 2-L, multipliers 7-1 to 7-M scheme for determining the weights 3, the adder 4 and the decisive figure 5.

While the first and second inputs of the search block 12 and multichannel data receiver 13 are combined and the signal inputs of the device. The output of the search block 12, which is the exit assessment number and time delays multipath component of the signal connected to the first input of the control unit 11.

The first outputs of the multichannel data receiver 13, which are the outputs of the correlation responses of characters together multipath component signal of the previous period, connected with the second inputs of the control unit 11.

The first output control unit 11, which is a control output connected to the third input of the search block 12.

The second outputs of the control unit 11, the cat is that outputs are the updated numbers and time delays multipath component signal, connected to third inputs multichannel data receiver 13.

The second output multichannel data receiver 13, which is the output of the correlation responses of characters multipath component of the signal with updated updated time delays, connected to the input circuit combining soft decisions 14. Multichannel data receiver 13 and schemes combining soft decisions 14 United in a block formation of soft decisions 15 whose output is the output of the soft decision device.

The device is a prototype of the reception of multipath signals is shown in figure 2, works as follows.

Input complex multipath signal containing the in-phase and quadrature components (CC and FAC), arrives at the inputs of the search block 12 and the inputs multichannel data receiver 13, with each data receiver processes the signal of a single beam. The signals from the first output multichannel data receiver 13, which represents a correlation responses of characters multipath component of the signal with updated updated time delay, proceed to the second input of the control unit 11. The signals from the second output multichannel data receiver 13, which represents a correlation responses of characters multipath component of the signal with updated updated time time delay is mi, is fed to the input circuit combining soft decisions 14.

In the scheme of combining soft decisions 14 correlation responses multipath component of the signal with updated updated time delays multichannel data receiver 13 are multiplied by the generated weighting coefficients so that a greater power signal corresponds to a higher ratio. Then the weighted output signals of the circuits of the multiplication are summed, resulting in a soft decision about the received information signal.

The search block 12 to the control signals from the first output unit 11 periodically reviews the scope multipath, with each period determines the number and time delay multipath component of the signal.

The maximum power of the search component to the input of the control unit 11, which is compared with the minimum power of the multipath component of the signal of the previous period received from multichannel data receiver 13.

If the maximum power of the search component is greater than the minimum power multipath components of the signal of the previous period, constitute a collection of component consisting of a multipath component of the signal of the previous period and the maximum power search components. Thus formed from the aggregate to the ponent exclude the minimum power component of the previous period. Thus is formed the totality of the multipath component of the signal current period with the updated time delays, which are further qualified by a tracking system delay in a multichannel data receiver 13.

The way search multipath signal prototype for the patent of the Russian Federation No. 2120180 is as follows:

- Form a complex correlation responses of the pilot signal, determining the correlation of the input signal with a reference signal that is shifted in discrete time search within the area of multipath.

- Determine the values of crucial functions for the given discrete time delays region multipath, summing the squares of the inphase and quadrature parts of the corresponding complex correlation responses of the pilot signal.

- Compare the values generated crucial functions with a given threshold h.

- Form estimation of search time delay multipath component of the signal exceeding the threshold h.

The discrete time search select, for example, equal to half of the chip SRP.

The threshold h is chosen proportional to the noise power.

To implement the search method in the prototype used the search block 12, which includes a receiver search 9 and diagram of the detection and analysis of cluster beams 8. Block diagram of the search block 12 are presented in figure 3, where indicated:

16-1 to 16-K - Quadra is to become the correlators,

17 is a pseudo - random sequence generator (SRP),

18 is a diagram of the formation of the threshold,

19 - control scheme,

the 20 - multiplexer.

The block 12 includes a search For quadrature correlators 16-1 to 16-K, the first and second inputs which are combined with the first and second inputs shaping circuit threshold 18 and are the signal inputs of the device. The third input of each of the quadrature correlator 16-1 to 16-K is the input signal of the SRP and is connected to the corresponding output of the generator SRP 17.

The fourth input of each of the quadrature correlator 16-1 to 16-K, which is the input control signal, is connected with a corresponding first output control circuit 19. The second output of the control circuit 19, which is the output of the phase shifts of the generator SRP 17, is connected to the generator input SRP 17. The output of each quadrature correlator 16-1 to 16-K, which is the output values of the decision function for the specified time delays region multipath, is connected with the corresponding input of the multiplexer 20.

The output of multiplexer 20, which is the output values of the decision function of multipath, is connected to the third input of the differential detection and analysis of cluster beams 8. Simultaneously, the output of the multiplexer 20 and the output circuit detection and analysis of cluster beams 8 are connected to the input of the block upravleniya.

The output of the shaping circuit threshold 18, which is the output of the threshold value h, is connected with the second input of the differential detection and analysis of cluster beams 8.

The input control circuit 19 and the first input of the differential detection and analysis of cluster beams 8, which are used as inputs control signals, connected to the first output control unit 11.

The search block 12 operates as follows.

The input signal is supplied to the first and second inputs To the parallel quadrature correlators 16-1 to 16-K and first and second inputs shaping circuit threshold 18. The third input quadrature correlators 16-1 to 16-AK receives the reference signal from generator SRP 17. Related quadrature correlators this signal is shifted in discrete time, is equal to, for example, half of the chip of the SRP. Time shifts (delays) the reference signal generator SRP 17 sets the signal time shifts generator SRP control circuit 19. In each quadrature correlator 16-1 to 16-K of the input pilot signal is multiplied by the reference signal. The results of the multiply accumulate, forming in-phase and quadrature components of the complex correlation responses of signals. The squares of the inphase and quadrature parts of the corresponding complex correlation responses summarize, resulting form the values of crucial functions for the given discrete lie is the R delays the area of multipath. Values generated crucial functions through the multiplexer 20 receives at the third input of the differential detection and analysis of cluster beams 8 and to the input of the control unit 11.

The control circuit 19 to the output signal from the control unit 11 carries out a temporal offset of the pseudo-random sequence generator 17 and clears the adders quadrature correlators 16-1 to 16-K.

The input signal of the circuit formation threshold 18 generates a threshold h, which is chosen, for example, is proportional to the noise power. The threshold value h is supplied to the second input of the differential detection and analysis of cluster beams 8.

In figure 8 the values of the decision function are compared with the threshold h. When the threshold is exceeded h make a decision about the presence of a signal for the given discrete time delays region multipath, and form evaluation of search time delay multipath component of the signal. Formed of the assessment act to the control unit 11.

Method of generating soft decisions when receiving a multipath signal of a prototype for the patent of the Russian Federation No. 2120180 is as follows:

- Generate a sequence of correlation responses of information symbols for each specified multipath components of a signal.

- Perform a weighted summation of the correlation responses of information symbols of all specified component megol the key signal, receiving the combined soft-decision information symbols.

Correlation feedback information symbols for each selected multipath components of the signal form, for example, determining the correlation of the input signal with a known SRP on intervals of length characters.

Weight the sum of the correlation response information symbols exquisite multipath component of the signal is chosen so that a greater power signal corresponds to a greater weighting factor.

The structural scheme of the device for the implementation of the prototype method of forming a soft solutions is shown in figure 4.

In a block formation of soft decisions 15 includes a multichannel data receiver 13 and the scheme of combining soft decisions 14.

While the first and second inputs multichannel data receiver 13 are signal inputs of the device. The first and third outputs inputs multichannel data receiver 13 is connected to the control unit 11. The second output multichannel data receiver 13, which is the output sequence of the correlation responses of characters specified multipath component of the signal connected to the input circuits of the combination of soft decisions 14, the output of which is the output of the combined soft decision device.

Unit 15 operates in the following manner:

In multichannel data receiver 13 form a sequence of correlation responses of information symbols of each of the adjusted components of a multipath signal. For this initial evaluation to the time delay component specify using the tracking system time delay. Next: determine the correlation of the input signal with a known SRP corresponding to the adjusted time delay multipath components of the signal. The generated correlation responses updated component information symbols multipath signal received on the scheme combining soft decisions 14, where they perform their weighted summation, receiving the combined soft-decision information symbols are received by the output device.

Weight the sum of the correlation response information symbols exquisite multipath component of the signal is chosen so that a greater power signal corresponds to a greater weighting factor.

This method of reception of multipath signal has the following disadvantages.

According to the description of the prototype in each period, the receiver searches sequentially through the area of multipath. However, in the multipath estimation of number and time delays multipath component of the signal is performed without considering the impact side zip pocket wit the emission correlation responses multipath component of the signal at each other.

In the update procedure is the replacement of one of the weakest components of the aggregate of previous period maximum capacity component of the aggregate of the current period. This leads to some energy to win. However, there are occasions when several newly discovered component of the aggregate of the current period exceeds the power components of the aggregate of the previous period. Therefore this approach when processing input multipath signal leads to energy losses as part of a more powerful component of the combined multipath signal current period is not used. In addition, the maximum component of the aggregate of the current period may have a temporary position (delay), close to the temporary position of the component Assembly of the previous period. This leads to inefficient use of single-beam receivers. In the end, all the selected channels of a multichannel data receiver can be configured on the same the most powerful component of the combined multipath signal.

In addition, it is not necessary to optimize the number of signals rays, which are used to obtain soft decision information symbols, which leads to high requirements for hardware implementation without increasing the quality of the allocated information on the promotion.

The objective of the present invention is the increased robustness and increase the capacity of communication systems when receiving a multipath signal due to the effective periodic update procedure multipath component of the signal when receiving a search component, accounting for the impact of multipath component signal each other during the procedure of search, optimization of the number of components that are used to obtain soft decision information symbols.

To solve this problem in the way of reception of multipath signals, namely, that when taken periodically determine the number and time delay multipath component of the signal, then:

- determine the time domain multipath,

- conduct a search signal in multipath and determine the grade of search of numbers and the time delay multipath component of the signal,

- updated form number and time delay multipath component of the signal,

- find the time delays of multipath component of the signal current period, keeping updated time delay multipath component of the signal,

using these time delays, form soft decision information symbols,

optionally, enter the following:

- updated form number is a and the time delays of multipath component of the signal from the multipath component of the signal of the previous period and those search component, the time delays are different from the time delay of each multipath component signal of the previous period by more than the given value Th, and

- if the number of components formed together do not exceed the specified number L, then the updated number of components is equal to the number of components formed together, and the updated time delay multipath component of the signal is equal to the time delay component together,

- if the number of components formed together more than a given number L, then assess the capacity component together and choose L to be the most powerful component, the time delays which are updated time delay multipath component of the signal, in this case, the updated number of the component is equal to L.

The time domain multipath is defined as the time domain delay from the value t1 is less than the minimum time delay multipath component signal of the previous period, and the end - t2 is greater than the maximum time delay multipath component signal of the previous period.

The value of Th is chosen, for example, equal to half of the chip SRP.

The value of L is chosen, for example, equal to the maximum number of multipath component being used for demodulation of data.

Powerfully the th multipath component of the signal can be evaluated by solving function search.

To solve this same problem in the way of reception of multipath signal used way of finding multipath signal, namely, that

- form a complex correlation responses of the pilot signal, determining the correlation of the input signal with a reference signal corresponding to a given discrete time delays region multipath,

- determine the values of crucial functions for the given discrete time delays region multipath, summing the squares of the inphase and quadrature parts of the corresponding complex correlation responses of the pilot signal,

- compare the values generated crucial functions with a given threshold h,

added the following operations:

- form the set of values of crucial functions, exceeded the threshold, and the sum of the corresponding time delays (positions)

step - by-step form estimation of search time delay multipath component of the signal at each stage receive the evaluation components, then:

- define an element with the maximum value of the set of values of crucial functions in the current stage, the set of values of the decisive features of the first stage is formed by a set of values of crucial functions,

- compare the maximum value of the crucial options and the current phase with a threshold h,

in the case of non - exceeding of the threshold of the formation of the assessment of search time delay multipath component of the signal stop,

- in case of exceeding the threshold:

the time delay corresponding to the element with the maximum value of crucial functions in the current stage, consider the estimation of search time delay multipath components of the signal,

adjust elements of the set of values of crucial functions in the current stage,

form the set of values of the decisive features of the subsequent stage, with the exception of the corrected set of values that are of crucial functions in the current phase of the element with the maximum value.

The threshold h is chosen, for example, is proportional to the noise power.

Correction elements of the set of values of the crucial features of the current phase is produced, for example, by subtracting the correction values of the elements together, the time delays are different from the time delay of the maximum element is not more than a specified time threshold η.

The correction value is chosen, for example, proportional to the maximum element and inversely proportional to the difference between the time delays of the maximum and the adjustable element of the set of values of the crucial features of the current phase.

For the reception of multipath signal features is to use the method of forming a soft solutions namely, that

- generate a sequence of correlation responses of information symbols for each multipath components of the signal,

- perform a weighted summation of the correlation responses of information symbols of all multipath component of the signal, receiving the combined soft-decision information symbols,

added the following operations:

before the formation of the sequence of correlation feedback information symbols

- carry out the selection multipath component of the signal, then:

- estimate the power of the multipath component of the signal,

- perform the ranking component of a multipath signal in descending order of their power,

- consistently for all ranked multipath component of the signal, except for the first,

form the ratio of the power components to the sum of the capacities of all the previous ranked component

compare the generated ratio with a preset threshold ν,

in case of exceeding the threshold component selected for formation of soft decisions

in the case of non-exceeding of the threshold selection component is complete,

- forming sequence of the correlation responses of information symbols and their weighted summation is carried out for the selected component of Mnogotochie the wow signal.

Threshold ν can be selected, for example, a valid energy losses due to restrictions used for demodulation component.

Correlation feedback information symbols for each selected multipath components of the signal form, for example, determining the correlation of the input signal with a known SRP on an interval of length characters.

The weights when summing the correlation response information symbols selected multipath component of the signal is chosen as the complex conjugate of the estimate of the complex envelope of information symbols multipath component of the signal.

To improve noise immunity and increase the capacity of the communication system when the reception beam signal using a periodic update procedure multipath component of the signal, a device receiving multipath signal containing the search block, the control block, the block formation of soft decisions, with the first and second inputs of the search block and block formation of soft solutions combined and are used as inputs in-phase and quadrature components of the input beam signal, the third input of the search block is connected to the first output control unit, which is a control output, the second output control unit that outputs are the temporal is x delays updated multipath component of the signal current period, connected to third inputs of block formation of soft decisions, the first output unit forming a soft decision is output soft decision information symbols and the output device, in which according to the invention additionally introduced the power pack component signal, and the output of the search block, which is the output of the estimated time delays and values crucial search multipath component of the signal connected to the first input unit updates the component signal and the fourth input of the unit forming the soft decisions output unit updates the component signal that is the output time delays updated multipath component of the signal connected to the input of the control unit, the second output unit forming soft solutions is the output of the correlation responses of the pilot symbols and the time delay multipath component signal of the previous period and is connected with the second input of the block update component of the signal.

In the pickup device of multipath signal are encouraged to use the block search multipath signal with a quadrature correlators, a method of forming the threshold, the pseudo-random sequence generator, a control circuit, a multiplexer, and the first and second inputs of the correlators are combined with first and second inputs of the circuits is the formation of the threshold and are used as inputs in-phase and quadrature components of the input beam signal, the third input of each of the quadrature correlator is input pseudo-random sequence and is connected to the corresponding output of a pseudorandom sequence generator, the fourth input of each of the quadrature correlator, which is the input control signal, is connected with a corresponding first output of the control circuit, the second output of the control circuit, which is the output of the phase shifts of the pseudo-random sequence generator, is connected to the input of the pseudo-random sequence generator, the output of each quadrature correlator, which is the value of crucial functions for the specified time delays region multipath, is connected with the corresponding input of the multiplexer, the input control circuit is the input control signals, which according to the invention introduced scheme detection beams, the first, second and third key, the first and second comparator, logical node, counter, site management, scheme OR, the node determining the maximum element, the first and second myCitadel, shaper module, a register, a memory element of the original population decision function, the memory element of the original population time delays, the memory register decisive search functions, a memory register evaluation of search time delays, shaping the fir signal correction moreover, the output of the multiplexer, which is the value of crucial functions, the area of multipath, is connected to the first input of the differential detection beams, the second output of the control circuit, which is the output of the phase shifts of the pseudo-random sequence generator, is connected with the second input of the differential detection beams, the output of the shaping circuit threshold, which is the output of the threshold value, is connected to the third input of the differential detection beams and the first input of the first comparator, the first circuit output detection rays, which is the exit time delays, is connected to a second input of the memory element of the original population to the time delay, the second output circuit detection rays, which is the output value decision functions, exceeded the threshold, is connected to a second input of the memory element of the original population decision function, the third circuit output detection rays, which is an output signal equal to the number of detected component, exceeded the threshold, connected to the first input of the control node, the fourth circuit output detection rays, which is an output signal indicating the threshold value for a given discrete time delay is connected with the second input of the control node, the first output control node, which is the output of the recording signal, is connected to pen the first input of the memory element of the original population decision function and to the first input of the memory element of the original population time delays, the output of the memory element of the original population decision function, which is the output of crucial functions in the current stage, connected to the first input node of determining the maximum element, with the first input of the second myCitadel, with the first inputs of the first and second keys, the second input node of determining the maximum element is the control input and is connected to the fifth output control node, the output node of determining the maximum element, which is the access address of the selected maximal element, connected to the fifth input of the control node, the second output control node which is an output signal indicating the presence of a maximum, is connected with the second input of the first key and the first input of logic node, the output of the first key is connected with the second input of the first comparator, the output of the first comparator, which is the output of the threshold, is connected to a second input of the logical node, the first input of the counter, with the second controllable inputs of the second and third keys, with the first input register, the third output control node, which is the output number of the identified component of the current search period, is connected to a second input of the counter output of the counter is connected to the first input circuit OR the second input of which is connected to the output of the logical node, the output of the circuit OR, which is the output is ndicator the end of the procedure search connected to the third input of the control node, the fourth output control node, which is the output of the control signal formation evaluation search, connected to the first input of the memory register decisive search functions, the first input of the memory register evaluation of search time delays and with the third input of the shaper of the correction signal, the second input of the memory register decisive functions of search and the first input of the shaper signal correction combined and connected to the output of the second key, which is the output of the maximum value of crucial functions in the current stage, the second input of the memory register evaluation of search time delays and case the joint and is connected to the output of the third key, the first input of which the United with the first input of the first vicites and is connected to the output of the memory element of the original population to the time delay, which is the output value of the time delay, corresponding to the maximum element, the output register, which is the value of time delay is connected with the second input of the first myCitadel, the output of the first myCitadel, which is the output of the differential time delays, is connected to the input of the shaper module, the module output signal difference generator module connected with the second input of the shaper of the correction signal and the first input of the second is comparator, the second input of the second comparator threshold is input, the output of the second comparator is the output of the threshold value and is connected to the fourth input of the control node and the fourth input of the shaper of the correction signal, the output of the shaper of a correction signal, which is the output of the correction signal, is connected to the second input of the second myCitadel, the output of which is connected to a second input of the memory element of the original population decision function, the output of the memory register evaluation of search time delays and the output of the memory register decisive search functions are combined and the output of the search block.

In the pickup device of multipath signal are encouraged to use the unit for shaping soft solutions containing multi-channel receiver data and schema combining soft decisions, the first and second inputs multi-channel receiver data inputs are in-phase and quadrature components of the component of the input signal and the first and second input devices, output multichannel data receiver connected to the input circuit combining soft decisions, which is the input sequence correlation response information and pilot symbols multipath component of the signal output combined soft decision scheme combining soft decisions is the first output block according to the invention additionally introduced a memory register, first, second and third multiplexers, the node estimates the power key, the first, second and third memory nodes, counter, adder, the first and second Comparators, the scheme OR the scheme is NOT, site ranking, driver relations, site management, and the third input unit is input to the time delay and the first inputs of the second multiplexer, the fourth input unit is input values crucial functions search for the current stage and the first input of the first multiplexer, the output of the multichannel data receiver connected to the input node cardinality estimation, which is the input sequence of the correlation responses of the pilot symbols multipath component of the signal, except also, the output multi-channel receiver data is the output sequence of the correlation responses of the pilot symbols and the time delay multipath component signal and a second output device, the second inputs of the first and second multiplexers are managers and are connected with the first output control node, the output node cardinality estimation, which is the output cardinality estimation component of a multipath signal, connected to the first input of the third multiplexer, the output of the first multiplexer is combined with the output of the third multiplexer, which is the output signal of the cardinality estimation component of a multipath signal, isodine to the first input of the third memory node, the output of the second multiplexer, which is the exit time delays updated multipath component of the signal connected to the first input of the first memory node, the second input is combined with the second input of the third multiplexer and connected to the second control the output of the control node, the third output of the control node is the output of the control signals and is connected to a second input of the third memory node, the first input of the first comparator and the first input of the memory register, the output of the third memory node, which is the output cardinality estimation current components, connected to the first input node ranking, the first input of the adder and the first input of the shaper relationship, the output of node ranking which is the output of ordered addresses of the memory cells connected to the first input of the control node, a second input node ranking connected with the fourth control the output of the control node, the fifth output control node, which is the output of the recording signal, is connected to the second input of the second memory node, a first input connected to the output of the adder, the output of the second memory node, which is the total output capacity of all previous ranked component is connected with the second input of the adder and the second input of the shaper relationship, the output of the shaper relations connected with p the pout input of the second comparator, the second input of which is the threshold input, the output of the second comparator, which is the output signal exceeding the threshold, connected to the input schema with the input of the counter and to the first input key, the second input key is connected to the output of the first memory node, the output key is connected with the second input of the memory register, which is the entrance time delay multipath components of the signal, the output of the memory register, which is the aggregate output time delays selected a component connected to the third input of the multichannel data receiver, the output of the circuit is NOT inverted output and connected to the first input circuit OR the output of the counter is output signal is equal to the number of the threshold, and is connected with the second input of the first comparator, the output of the first comparator is connected with the second input circuit OR the output of which is the output of the signal indicating the completion of the selection procedure component for the formation of soft decisions and connected with the second input node of the control.

Comparative analysis method of reception of multipath signal search method when receiving a multipath signal, the method of forming a soft decisions when receiving a multipath signal with the prototype shows that the proposed invention is substantially different from the prototype, as they allow to increase polhaus ascioti and to increase the capacity of the communication system when receiving a multipath signal.

Comparative analysis of the proposed methods with other technical solutions in this field of technology is not allowed to reveal the characteristics stated in the characterizing parts of the claims. Therefore, the inventive method of reception of multipath signal, the search method when receiving a multipath signal, the method of forming a soft decisions when receiving a multipath signal meet the criteria of "novelty", "technical solution", "significant differences" and has the obviousness of the solution.

Comparative analysis of the reception of multipath signal receiver search multipath signal shaper soft decisions when receiving a multipath signal with the prototype shows that the proposed invention is substantially different from the prototype, because they lead to increased robustness and capacity of the communication system when receiving a multipath signal by introducing new units and relations units.

Comparative analysis of the proposed devices with other technical solutions in this field of technology is not allowed to reveal the characteristics stated in the characterizing parts of the claims. Therefore, the claimed device receiving multipath signal, the receiver search multipath signal and the shaper soft decisions when receiving a multipath signal is techout criteria of "novelty", "technical solution", "significant differences" and have the obviousness of the solution.

Graphic materials presented in the application materials:

Figure 1 is a detailed block diagram of the device of the reception of multipath signal (prototype).

Figure 2 - integrated structural diagram of the device of the reception of multipath signal (prototype).

Figure 3 - block diagram of the search block (prototype).

4 is a structural block circuit diagram of the formation of soft decisions (prototype).

5 is a structural diagram of the device of the reception of multipath signal.

6 is a variant execution unit updates the component signals.

7 is an embodiment of node cardinality estimation.

Fig - variant execution node selection.

Fig.9 block diagram of the proposed search block when receiving a multipath signal.

Figure 10 is an embodiment diagram of the detection beams.

11 is an embodiment of the shaper signal correction.

Fig - an embodiment of a logical node.

Fig - structural diagram of the proposed block the formation of soft decisions when receiving a multipath signal.

The proposed method of reception of multipath signal is as follows.

Periodically determine the number and time delay multipath component of the signal, which performs the following operations:

- Determine Aut time domain multipath.

- Conduct a search signal in multipath and determine the grade of search of numbers and the time delay multipath component of the signal.

- Updated form number and time delay multipath component of the signal, then:

- form an aggregate component, consisting of a multipath component of the signal of the previous period and those search component, the time delays are different from the time delay of each multipath component signal of the previous period more than the given value Th;

- if the number of components formed together do not exceed the specified number L, then the updated number of components is equal to the number of components formed together, and the updated time delay multipath component of the signal is equal to the delay component of the population;

- if the number of components formed together more than a given number L, then assess the capacity component together and choose L to be the most powerful component, the time delays which are updated time delay multipath component of the signal. In this case, the updated number of the component is equal to L.

- Find the time delays of multipath component of the signal current period, keeping updated time delay component of many the radiation signal.

Using these time delays, form soft decision information symbols.

The time domain multipath is defined as the time domain delay from the value t1 is less than the minimum time delay multipath component signal of the previous period, and the end - t2 is greater than the maximum time delay multipath component signal of the previous period.

The value of Th is chosen, for example, equal to half of the chip SRP.

The value of L is chosen, for example, equal to the maximum number of multipath component being used for demodulation of data.

The power of the multipath component of the signal estimate, for example, in deciding the search function.

To implement the proposed method of reception of multipath signal is presented on figure 5, where indicated:

11 - control,

12 - unit search

15 - block formation of soft decisions

21 is a block update component of the signal.

The pickup device of multipath signal contains the search block 12, the control unit 11, block the formation of the soft decision 15, the block update component of the signal 21. The first and second inputs of the search block 12 and block the formation of soft decisions 15 combined and are used as inputs in-phase and quadrature components of the input beam signal (a signal in which the ar device).

The third input of the search block 12 is connected to the first output control unit 11, which is the control output. The second outputs of the control unit 11, which are the outputs of the delays updated multipath component of the signal current period, is connected with the third input of block formation of soft decisions 15. The first output block formation of soft decisions 15 is the output of the soft decision information symbols and the output device.

The output of the search block 12, which is the output of the estimated time delays and values crucial search multipath component of the signal current period, connected to the first input unit updates the component signal 21 and the fourth input of the unit forming the soft decisions 15.

The output of block update component signal 21, which is the exit time delays updated multipath component of the signal current period, is connected to the input of the control unit 11.

The second output unit forming soft solutions 15 is the output of the correlation responses of the pilot symbols updated multipath component signal and the updated time delay multipath component signal of the previous period and is connected with the second input of the block update component of the signal 21.

The proposed device receiving beam with the persecuted as follows.

The input complex signal containing the in-phase and quadrature components, is fed to first and second inputs of the search block 12 and the first and second inputs of block formation of soft decisions 15.

In the search block 12 periodically analyze the area of multipath. With the current search period, for example, as in the prototype, by correlation processing and comparing the values of the crucial search function with a threshold to determine an estimate of the number and time delays multipath component of the signal. The estimation of time delay multipath component signal and the corresponding values of the crucial search function to arrive at the first input block update component signal 21 and the fourth input of the unit forming the soft decisions 15.

The area of multipath for the current search period is determined in the control unit 11 according to the signal received at its input from the output of the power pack component signal 21.

Border region multipath current search period is determined, for example, as follows: for the lower bound, take the time delay button on t1 earlier time delay of the first detected components of multipath signal components with the smallest time delay), and for the upper bound, take the time delay button on t2 later BP is constant delays last detected multipath components of a signal.

Information about the size and temporal position of the multipath from the first control output of the control unit 11 is supplied to the third input of the search block 12.

In block update component signal 21 to form the updated number and time delay multipath component of the signal:

- For the current search period estimation of time delays and values crucial functions of the search component of multipath signal search block 12 and the correlation responses of the updated component multipath signal with the adjusted time delay block formation of soft decisions 15.

- For the first search period estimated time delay multipath component of the signal search block 12.

Updated time delay multipath component of the signal current period unit 21 is fed to the input of the control unit 11, the second output of which is on the third input of block formation of soft decisions 15 receives a set of updated time delay multipath component signal of the previous period.

On the generated time delays in the formation of soft decisions 15 have been rebuilding generator of pseudorandom sequences of data receivers 13, produce clarification time delays updated multipath component of the signal current period and which is jut correlation responses of characters specified component.

From the second output unit forming soft solutions 15 refined time delays and the corresponding correlation responses of the pilot symbols updated multipath component of the signal received at the second input block update signal 21.

In block formation of soft decisions 15 perform a weighted summation of the generated correlation response information symbols specified component of a multipath signal, receiving the combined soft-decision information symbols are received by the output device.

Weight summing the output signals of block formation of soft decisions 15 choose, for example, as a complex conjugate of the estimate of the complex envelope of information symbols of the updated component multipath signal with specified time delays of the data receivers.

The control unit 11 is a typical block and can be implemented by various means, for example, modern microprocessors digital signal processing (DSP) - TMS320Cxx, Motorola 56xxx, Intel, etc.

Option execution unit updates the component signal 21 of the device of the reception of multipath signal are presented in Fig.6.

Figure 6 uses the following notation:

22, 32, 36, 41 - multiplexers,

23, 33, 35 keys,

24 - myCitadel,

25 - the register,

26 diagram AND WHAT-NOT,

27 - trigger

28 - shaper module

29, 39 Comparators,

30 - the scheme is NOT,

31 - the counter,

34 - adder,

37, 38, 42 - memory nodes,

40 - node cardinality estimation,

43 site selection,

44 - control node.

Nodes 22-31 included in the unit 21, determines the search components of the current phase, the time delays are different from the time delay of each multipath component signal of the previous period by more than the given value Th.

In the memory node 37 is formed and memorize a set time delay multipath component signal of the previous period and those search component of the current phase, the time delays are different from the time delay of each multipath component signal of the previous period more than the given value Th.

Site evaluation capacity 40, the multiplexer 41, the memory node 42, the multiplexer 32 and the key 33 is used for forming the memory node 42 of the set of power ratings (crucial functions) multipath component signal of the previous period and estimates of the search power (decisive function) multipath component of the signal current period, the time delays are different from the time delay of each multipath component signal of the previous period more than the given value Th.

The adder 34, the memory node 38, the key 35 and C is arator 39 form signals the number of components in the memory nodes 37 and 42 and the control signal on the fact of exceeding the quantity signal component of a given number of L.

Site selection 43 generates addresses the totality of the updated temporary delays in L. the most powerful component of a multi-beam signal recorded in the memory node 37.

The power pack component signal 21 is as follows.

With search block 12 to the first inputs of the multiplexer 22, the first inputs of the multiplexer 32 and the first inputs of the control unit 44 receives respectively the estimation of search time delay multipath component of the signal evaluation of the search power (decisive features) and evaluating search number multipath component signal of the current period.

Block the formation of soft decisions 15 to the first input of the multiplexer 36 and the first input node cardinality estimation 40 receives, respectively, the time delay and correlation responses of the pilot symbols updated multipath component signal of the previous period.

In the site evaluation capacity 40 correlation responses of characters updated the component and reset signals from the second output control unit 44 is supplied to the second input node cardinality estimation 40, form the estimate of the power (critical function) updated multipath component signal of the previous period, which is supplied to the first input of the multiplexer 41.

From the third output control unit 44 to the second input of multiplexer 41 receives the signal switching, which produce elementno the transfer to the output multiplexer and the first input node of the memory 42 of the power ratings (crucial functions) updated multipath component signal of the previous period.

In the memory node 42 to the recording signal supplied from the fourth output control unit 44 to the second input node of the memory 42, form a set of power ratings (key function) updated multipath component signal of the previous period, and the signal read coming from the same output control unit 44, this set from the output node of the memory 42 is supplied to the first input node 43.

From the first output control unit 44 to the second input of multiplexer 36 receives the signal switching, which produce atomic transfer the output of the multiplexer 36 and the first input node of the memory 37 estimates updated to the time delay multipath component signal of the previous period.

In the memory node 37 to the recording signal received from the third output control unit 44 to the second input node of the memory 37, form a set of updated estimates of time delays, multipath component signal of the previous period.

Here's the procedure for providing a set of time delays of the previous period and those search component of the current phase, the time delays are different from the time delay of each multipath component signal of the previous period by more than a given threshold value Th.

From the first output control unit 44 to the second input of the multiplexer 22 and W is the second input of the multiplexer 32 receives the signal switching which produce atomic transfer the output of the multiplexer 22 of the estimated search time delay multipath component of the signal current period, and the output of the multiplexer 32 ratings search power (decisive function) of the corresponding multipath component of the signal.

Simultaneously with the first output control unit 44 to the second input register 25 receives the appropriate signals clock frequency, the signal writing and reading, and at the first input of counter 31 signals the clock frequency and evaluation of search number of multipath component signal of the current period.

Elementwise evaluation of search time delay multipath component of the signal current period from the output of the multiplexer 22 receives at the first input key 23 and the second input vicites 24. At the first sign of vicites 24 from the output of the memory node 37 to the read command from the third output node of the control element 44 receives the updated assessment to the time delay multipath component signal of the previous period.

The switching of the multiplexer 22 and read from host memory 37 are carried out by the control signals from the control unit 44 so that the estimate of the search to the time delay of each multipath components of the signal current period sequentially compare myCitadel 24 with all the updated estimates of time delay components is NT multipath signal of the previous period.

The output signal of vicites 24, representing the amount (value) of the difference between the estimation of search time delay multipath component of the signal current period and evaluation updated to the time delay multipath component signal of the previous period to the input of the shaper module 28, which is formed by the module this signal. The generated output signal from the shaper module 28 is supplied to the first input of the comparator 29, the second input of which serves a specified signal threshold Th. The signal value of the threshold Th is chosen, for example, equal to half of the chip SRP.

If exceeded, the output signal of the driver module 28 signal threshold Th at the output of the comparator 29 produces a signal equal to, for example, a logical unit. Otherwise, produce a signal that is equal to, for example, a logical zero. This signal is fed to the input circuit 30. With the output of the circuit 30 inverted signal is supplied to the first input register 25 with serial input and parallel output, for example, implemented on the basis of the standard chip series P or series IR. Register 25 pre-zero on power-up or the signal indicating the end of the current cycle of comparison that in the process, form the output of the counter 31. The signal indicating the end of the current cycle comparison with the output of the counter 31 post is Paeth at the third input of the register 25 and to the second input of the trigger 27.

The signal indicating the end of the current cycle comparison can be made using standard programmable counters, for example, a series of IE or other

The initial state of the counter 31 is set by the control command from the first output control unit 44 to the control input of the counter on the known number of the component Assembly of the previous period stored in the memory node 37. At the counting input of the counter 31 signal of clock pulses and to the second input register 25 signal recording.

The signal indicating the end of the current cycle comparison form, for example, when a signal appears logical units on the output of the high-bit counter 31, which corresponds to the completion of a read from host memory 37 of all the component Assembly of the previous period.

In this procedure, the formation of aggregate time delay counter 31 for each read cycle of the memory node 37 produces a signal indicating the end of the current cycle.

Sequentially according to the comparison results in myCitadel 24 estimated search time delay of each multipath components of the signal current period with all the updated estimates of time delays, multipath component signal of the previous period on the output of the circuit 30 form the signal comparison, equal to logicalchannel, if the evaluation time delay multipath component of the signal are separated from each other by not less than Th, and is equal to a logical unit otherwise. Formed the comparison signals are sequentially recorded in the register 25. With parallel outputs of the register 25, the comparison signals arrive at the inputs of the circuit OR NOT 26, the output of which the signal indicating the end of the current cycle comparison record in the trigger 27 and the register 25 are reset to zero.

The output trigger signal 27 is supplied to the second control input key 23, the second control input key 33 and the first input of the adder 34. The output signal of the circuit OR-NO 26 (trigger 27) is equal to a logical unit, if the estimation of the time delay of the analyzed signal components of the current period is separated from all estimates updated to the time delay multipath component signal of the previous period is not less than Th. Otherwise, the output signal of the circuit OR-NO 26 (trigger 27) is equal to a logical zero.

Signal equal to a logical unit, estimation of search time delay of the analyzed signal components of the current period from the output of the multiplexer 22 through the key 23 is passed to the first input node of the memory 37 and remember. Appropriate assessment of search power (critical function) multibeam signal of the current period from the output of the multiplexer 32 via the key 33 in front of the Ute at the first input node of the memory 42 and remember.

Signal equal to a logical zero, the keys 23, 33 block, and write to the memory nodes are not produced.

Upon completion of the procedure compare all of the estimated search time delay multipath component of the signal current period with all the updated estimates of time delays, multipath component signal of the previous period in the host memory 37 form a set time delay multipath component signal of the previous period and those search component, the time delays are different from the time delay of each multipath component signal of the previous period by more than a given threshold value Th. At the same time in the memory node 42 to form a set of estimates of the search power (decisive function) of the corresponding multipath component of the signal.

For each cycle of the comparison output signal of the trigger 27 is equal to a logical one or a logical zero is applied to the first input of the adder 34. To the second input of the adder 34, the first input of the comparator 39 and the second input of the control unit 44 receives the signal from the output of the memory node 38, which corresponds to the number of the component of the aggregate of the current period. In the adder 34 for each cycle comparison summarize the number recorded in the memory node 38 and the output signal of the trigger 27. The resulting sum is supplied to the first input node memory and 38, who remembers the recording signal coming from the fourth output control unit 44 to the second input node of the memory 38.

After completion of the formation of the aggregate component of the current phase signal reading coming from the fourth output control unit 44 to the second input node of the memory 38, the result of the summation output node memory 38 to the input of the comparator 39. In the comparator 39 this signal is compared with a preset number L, which is supplied to the second input of the comparator 39 and the second input key 35.

At the output of the comparator 39 produces a control signal to the procedure of forming the aggregate is updated to the time delay, which receives at the first input key 35 and the third input of the control unit 44.

If the signal from the output of the memory node 38 exceeds the number L, then the output of comparator 39 produces a signal equal in this case to a logical unit, which receives at the first input key 35 and the third input of the control unit 44. To the second input of the control unit 44 from the output of the node memory 38 receives the signal, which corresponds to the number of the component of the total population. These signals control unit 44 generates the control signals for node 43 and the memory node 42, which are respectively received from the fifth output control unit 44 to the second input node 43 and the fourth is ihoda control unit 44 to the second input node of the memory 42.

The control signals from the fourth and fifth output control unit 44 contain the signal frequency, the signal recording and reading signals corresponding to the number of the component of the total population and specified number of L. these signals from the memory node 42 to node 43 reads a set of estimates of the search power (decisive function) of the corresponding multipath component signal and generates addresses to the time delay L is the most powerful component of a multi-beam signal recorded in the memory node 37. The generated address from the output node 43 is received on the fourth input of the control unit 44. The control unit 44 reads from the memory node 37 updated aggregate time delays of the current period that are generated by the address. The updated set of time delays for the current period from the output of the memory node 37 and the corresponding addresses from the sixth output control unit 44 receives a control unit 11.

If the signal from the output of the memory node 38 does not exceed the specified number L, then the team with the third output control unit 44 reads from the memory node 37 to the control unit 11 of the totality of time delay multipath component signal of the current period.

The control unit 44 may be implemented in various ways, for example, in addition to the different microprocessors digital signal processing (DSP) - TMS320Cxx, Motorola 56xxx, Intel, etc.

The option to perform a site evaluation capacity 40 proposed device receiving multipath signal are presented in Fig.7.

Site evaluation capacity 40 operates as follows.

On the first inputs of adders reset 46, 50 nodes cardinality estimation components 45-1 to 45-M from the second output unit forming soft solutions 15 are received respectively in-phase and quadrature components of the correlation responses of the updated component multipath signal (ACIAsii=1...M). On the second inputs of adders reset 46, 50 and 49 nodes cardinality estimation components 45-1 to 45-M with control unit 44 receive respectively the signals reset 1 and reset 2. In the adders reset 46, 50 time interval between the reset signals produce coherent accumulation phase and quadrature components of the correlation responses of the updated component multipath signal. When forming the signal reset 1 for adders with discharge 46, 50, take into account the coherence interval of multipath signal. The generated signals from the outputs of the adders reset 46, 50 are received respectively to the inputs of the Quad 47 and 51, where the form of the signals is equal to the squares of the inphase and quadrature components of the correlation response. These signals respectively to the first and second input of the adder 48, the output to the form showing the sequence of the sums of the squares of the inphase and quadrature components of the correlation responses which is fed to the input of the adder with discharge 49. In the adders reset 49 nodes cardinality estimation components 45-1 to 45-M produce non-coherent accumulation of the sums of the squares of the inphase and quadrature components of the correlation of the response form and the set of power ratings (crucial functions) multipath component signal of the previous period, which is fed to the input of multiplexer 41. Characteristics of the signals reset 1 for adders with discharge 46, 50 and reset for 2 adder reset 49 is chosen so that to provide for the cardinality estimation component of a multipath signal, the same as in the search block 12. This is necessary to obtain adequate estimates that are used for comparison at node 43.

Embodiment of the node 43 of the device receiving multipath signal presented on Fig.

Preliminarily it should be noted that for the implementation of specific solutions using memory element 55 in the site selection 43 excessively. However, this approach allows to obtain a generic structure that can be used in the proposed device for various tasks.

Site selection 43 by the total population N evaluations of the search power (decisive function) multipath component of the signal generated in the memory node 42, generates addresses updated in the temporal delays for L ranked the most powerful component of the aggregate. When N>L.

Node 43 is as follows.

At the first input of the memory element 55 from the output of the memory node 42 receives the total set of N estimates of search power (decisive function) multipath component of the signal. According to the recording signal supplied from the control unit 44 to the second input element

the memory 55, the set of remember. It should be noted that the memory element 55 has a structure identical to the memory node 42 and 37, that is, at the same address recorded with the appropriate parameters component together.

Further, all operations are performed with the components of the aggregate, written in the memory element 55.

The selection procedure is carried out in a L stages. For each stage, which consists of K cycles, determine the maximum element of the set of memory element 55 and remember the corresponding address in the address register 60. The maximum element of the set of memory element 55 are reset to zero and perform the next step for the modified set of items. The entire procedure takes NxL cycles.

With the control unit 44 to the second input of the memory element 55 receives the clock signal frequency, the signal read and the address component of the population. At the first input key 57 receives the address component of the population. At the first input of counter 61, the second input of the registers 56, 58 and the first input register 52 receives C is the channel clock frequency. To the second input of counter 61 receives the signal corresponding to the component number (cycles) N recorded in the host memory 42 together. To the second input of the counter 62 receives the signal corresponding to the specified number (steps) L.

At the first stage of the register 52 pre-reset signal, which is supplied at its second input from the control unit 44.

Each subsequent stage is implemented as follows.

With the control unit 44 to the second input of the memory element 55 and the first input key 57 sequentially receives the address component of the population. The signal read from the memory element 55 at the first input register 56 to produce a consistent reading of the power ratings (crucial) component of the combined multipath signal. According to the recording signal supplied to the second input register 56 with the control unit 44, a matter of assessing the capacity of the crucial functions) multipath component of the signal record.

The signal reading assessment capacity (crucial functions) of the analyzed components from the output of the register 56 is supplied to the first input of the key 53 and to the second input of the comparator 54, the first input is from the output of the register 52 receives a zero signal for the first cycle or some intermediate most current assessment of power components for other cycles. If the signal on the second input of the comparator 54 is greater than the signal h is his first entrance the output of comparator 54 form a signal equal to a logical unit, which is supplied to the second input of the key 53, the second input key 57, the third inputs of the write registers 52 and 58.

This signal power evaluation (crucial functions) multipath components of the signal from the output of the register 56 through the key 53 is supplied to the fourth input register 52, which write in it instead of the previously recorded lesser capacity assessment.

The corresponding address through the key 57 is supplied to the first input register 58, which write in it instead of the previously recorded address and transmitted to the first input of the key 59.

If the signal on the second input of the comparator 54 is less than the signal at its first input, the output of comparator 54 form a signal equal to a logical zero, and switching keys 53, 57 do not exercise. The registers 52 and 58 remain in a state corresponding to the previous cycle.

Thus at each iteration, choose the address that corresponds to a larger capacity component of the modified set of elements.

The counter 61 by the number of clock symbols on the first input and the signal corresponding to the number of the component population N, generates the signal of the end of the current cycle and can be implemented, for example, on the basis of standard programmable counter, for example, a series of IE and other

Signal the end of the current cycle is the Oh, for example, when a single signal in the highest bit of the counter 61. This signal from the output of the counter 61 is supplied to the first input of the counter 62, to the second input of the key 59, the second input register 52 and to the first input key 63, the second input of which receives the signal of zero. The output signal of the key 63 is supplied to the first input of the memory element 55.

To signal the end of the current cycle reset register 52 and output key 63 to the first input of the memory element 55 signal zero level.

Address that corresponds to a component of the aggregate of each stage with a maximum rating of power through the key 59 is supplied to the first input of the address register 60 and to the second input of the memory element 55.

According to the recording signal supplied from the control unit 44 to the second input of the address register 60, the address corresponding component of each stage together with the maximum rating power, remember in the address register 60.

Thus at each stage, choose an address corresponding to the greater element of the modified aggregate.

In the memory element 55 at the address corresponding to component together with the maximum rating power, record a zero value.

The counter 62 by the number of signals the end of the current cycle on the first input and the signal corresponding to the number of stages L, generates signal the end of the procedure, the choice is and can be implemented for example, on the basis of standard programmable counter series EE and other

Signal the end of the selection procedure is, for example, a signal of logical units on the highest bit of the counter 62, which occurs at the time of coincidence of the number of signals the end of the current cycle and the signal corresponding to the number of stages of L. This signal from the output of counter 62 is supplied to a control unit 44. To signal the end of the selection procedure in the control unit 44 to form the signal read, which is supplied to the second input of the address register 60. On this signal from the address register 60 in the control unit 44 reads the address L is the most powerful component of the updated aggregate time delays.

An address register 60 with serial input and parallel output, can be implemented, for example, on the basis of the standard chip series P or series IR.

The proposed method of finding the signal in the area of multipath is as follows:

- Form a complex correlation responses of the pilot signal, determining the correlation of the input signal with a reference signal corresponding to a given discrete time positions (delays) in the area of multipath (offset by a discrete time search within the area of multipath).

- Determine the values of crucial functions for the given discrete time ass is ZHEK region multipath, summing the squares of the inphase and quadrature parts of the corresponding complex correlation responses of the pilot signal.

- Compare the values generated crucial functions with a given threshold h.

- Form the set of values of crucial functions, exceeded the threshold, and the sum of the corresponding time delays.

Step - by-step form estimation of search time delay multipath component of the signal. At each stage receive the evaluation components, then:

- define an element with the maximum value of the set of values of crucial functions in the current stage, the set of values of the decisive features of the first stage is formed by a set of values of crucial functions,

- compare the maximum value of the crucial features of the current phase with a threshold h,

in the case of non - exceeding of the threshold of the formation of the assessment of search time delay multipath component of the signal stop,

- in case of exceeding the threshold:

the time delay corresponding to the element with the maximum value of crucial functions in the current stage, consider the estimation of search time delay multipath components of the signal,

adjust elements of the set of values of crucial functions in the current stage,

form the set of values of the decisive function is AI a subsequent stage, excluding from the corrected set of values that are of crucial functions in the current phase of the element with the maximum value.

The discrete-time search is selected, for example, equal to half of the chip SRP.

The threshold h is chosen, for example, is proportional to the noise power.

Correction elements of the set of values of the crucial features of the current phase is produced, for example, subtracting the correction value of the elements together, the time delays are different from the time delay of the maximum element is not more than a specified time threshold η.

The adjustment value is selected, for example, proportional to the maximum element and inversely proportional to the difference between the time delays of the maximum and the adjustable element of the set of values of the crucial features of the current phase.

Time limit η is selected, for example, equal to two increments of time.

To implement the proposed method of finding the signal in the area of multipath is presented on Fig.9, where indicated:

16-1 to 16-K - quadrature correlators,

17 - generator SRP,

18 is a diagram of the formation of the threshold,

19 - control scheme,

the 20 - multiplexer,

64 - detection scheme rays,

65, 73, 76 - first, second, third keys,

66, 83, the first and second Comparators,

67 - L. the logical node

68 - meter

69 - site management

70 diagram OR,

71 - the memory element of the original population of crucial functions

72 - node determining the maximum element

74 is a memory register decision function search

75 - the memory element of the original population time delays,

77 - memory register of the estimated search time delays,

78, 82, the first and second myCitadel,

79 - shaper module

80 - register,

81 - shaper signal correction.

A device that implements the search method contains To quadrature correlators 16-1 to 16-K, the first and second inputs which are combined with the first and second inputs shaping circuit threshold 18 and are the signal inputs of the device. The third input of each of the quadrature correlator 16-1 to 16-K is the input signal of the SRP and is connected to the corresponding output of the generator SRP 17.

The fourth input of each of the quadrature correlator 16-1 to 16-K, which is the input control signal, is connected with a corresponding first output control circuit 19. The second output of the control circuit 19, which is the output of the phase shifts of the generator SRP 17, is connected to the generator input SRP 17 and the second input of the differential detection beams 64. The output of each quadrature correlator 16-1 to 16-K, which is the value of crucial functions for the specified time for which Eric region multipath, connected with the corresponding input of the multiplexer 20.

The output of multiplexer 20, which is the output values of the crucial functions of multipath, is connected to the first input of the differential detection beams 64.

The output of the shaping circuit threshold 18, which is the output of the threshold value h, is connected with the third input of the differential detection beams 64 and the first input of the first comparator 66.

The input control circuit 19, which is the input control signals, is connected to the first output control unit 11.

The first output of the circuit of the detection beams 64, which is the exit time delays connected with the second output of the memory element of the original population time delays 75. The second output circuit detection beams 64, which is the output values of the decision function, exceeded the threshold, is connected to a second input of the memory element of the original population decision function 71. The third circuit output detection beams 64, which is an output signal equal to the number of detected component, exceeded the threshold, connected to the first input of the control unit 69. The fourth circuit output detection beams 64, which is an output signal indicating the threshold value for a given discrete time delay is connected with the second input of the control unit 69. The first output of the control unit 69, which is the output of the m signal recording, connected to the first input of the memory element of the original population decision function 71 and to the first input of the memory element of the original population time delays 75. The output of the memory element of the original population decision function 71, which is the output of crucial functions in the current stage, connected to the first input node of determining the maximum element 72, with the first input vicites 82, with the first inputs of the first key 65 and the second key 73. The second input node of determining the maximum element 72 is a control input and connected to the fifth output control unit 69. The output node of determining the maximum element 72, which is the access address of the selected maximal element, connected to the fifth input of the control unit 69.

The second output control unit 69, which is an output signal indicating the presence of a maximum, is connected with the second input key 65 and the first input of the logical node 67. The output of the key 65 is connected with the second input of the first comparator 66. The output of the comparator 66, which is the output of the threshold, is connected to a second input of the logical node 67, the first input of counter 68, with the second controllable inputs 73 second and third 76 keys and with the first input register 80.

The third output of the control unit 69, which is the output number of the identified component of the current search period, the connection is with the second input of the counter 68. The output of counter 68 is connected to the first input circuit OR 70, the second input of which is connected to the output of the logical node 67. The output of the circuit 70, which is an output indicator of the end of the search process, connected with a third input of the control unit 69.

The fourth output control unit 69, which is the output of the control signal formation evaluation search, connected to the first input of the memory register decisive search functions 74, with the first input of the memory register evaluation of search time delays 77 and the third input of the shaper signal correction 81. The second input of the memory register decisive search functions 74 and the first input of the shaper signal correction 81 United and connected with the outlet of the second key 73, which is the maximum output of the crucial features of the current phase. The second inputs of the memory register evaluation of search time delays 77 and register 80 United and connected with the third key 76, the first input of which is combined with the first input of the first vicites 78 and is connected to the output of the memory element of the original population time delays 75, which is the output value of the time delay, corresponding to the maximum element. The output of register 80, which is the value of time delay is connected with the second input of the first vicites 78. The output of the first vicites 78, which is one the camping output differential time delays, connected to the input shaper module 79. The module output signal difference generator module 79 is connected with the second input of the shaper of the correction signal 81 and the first input of the second comparator 83. The second input of the comparator 83 is the threshold of the entrance. The output of the second comparator 83 is output threshold and is connected to the fourth input of the control unit 69 and the fourth input of the shaper signal correction 81. The shaper's output of the correction signal 81, which is the output of the correction signal, is connected to the second input of the second vicites 82, the output of which is connected to a second input of the memory element of the original population decision function 71. The output of the memory register evaluation of search time delays and the output of the memory register decisive search functions are combined and the output of the search block 12.

The proposed device search signal 12 is as follows.

Sum of the values of the crucial functions of search, exceeded the threshold, a set of estimates for the values of the crucial functions multipath component signal and the sum of the corresponding time delays.

When forming the evaluation of the search for temporary positions (delays) multipath component of the signal is taken into account the effect of lateral emission of the correlation responses of signals of the beams at each other.

Phase quadratura components of the input complex signal are received respectively in the first and second inputs To the parallel quadrature correlators 16-1 - 16-K and first and second inputs shaping circuit threshold 18. The third input quadrature correlators 16-1 to 16-K with the corresponding outputs of the generator SRP 17 receives the reference signal, shifted in discrete time search within the area of multipath, for example, equal to half of the chip of the SRP. Time shifts the reference signal generator SRP 17 set signal time shifts of the generator of the SRP, which is supplied from the second output control circuit 19 to the input of the generator SRP 17 and to the second input of the differential detection beams 64. The fourth input of each of the quadrature correlator 16-1 to 16-K with the corresponding first output control circuit 19 receives the control signal, such as a reset signal.

In each quadrature correlator 16-1 to 16-K of the input signal Peremohy on the reference signal, the results of the multiply accumulate and within the scope of multipath shape correlation responses of the in-phase and quadrature components of the pilot signal form the squares of the inphase and quadrature parts of the corresponding complex correlation responses of the pilot signal. Summing the squares of the inphase and quadrature parts of the corresponding complex correlation responses, determine the values of the crucial functions in the given discrete time positions in the field of multipath, which is fed to the input of multiplexor is 20.

From the output of the multiplexer 20 values crucial functions in predetermined discrete time positions field multipath arrives at the first input of the differential detection beams 64.

The control signal output from the control unit 11, the control circuit 19 performs a temporal offset generator SRP 17 within the field of multipath and clears the adders quadrature correlators 16-1 to 16-K.

The input signal of the circuit formation threshold 18 generates a threshold h, which is chosen, for example, proportional to the estimate of noise power, and served on the third circuit input detection beams 64 and to the first input of the comparator 66.

In the detection scheme rays 64 values crucial functions for the given discrete time delays region multipath is compared with the threshold h and form values crucial functions, exceeded the threshold h, and the corresponding temporary position, the signal corresponding to the number of detected component N, exceeded the threshold, and the signal indicating the exceeding of the threshold h in a given discrete time position.

The values of crucial functions, exceeded the threshold h, and the corresponding temporary position with the second and first output circuit detection beams 64 are received respectively to the second input of the memory element of the original population decision function 71 and to the second input of the memory element source sovokupnostei delays 75. At the first input of the control unit 69 and the third output circuit detection beams 64 and to the second input of the control unit 69 and the fourth circuit output detection beams 64 are received, respectively, a signal equal to the number of detected component N, exceeded the threshold, and the signal indicating the exceeding of the threshold h in a given discrete time position.

The signal indicating the threshold value h to the first output control unit 69 to form a recording signal, which is supplied to the first input of the memory element of the original population decision function 71 and to the first input of the memory element of the original population time delays 75. This signal values crucial functions, exceeded the threshold h, and the corresponding temporary positions recorded respectively in the memory elements of the original population decision function 71 and the memory element of the original population time delays 75 to form the initial set of values of crucial functions, exceeded the threshold h, and the original set of corresponding temporary positions (delays) of the current search period.

Using the original population, in stages for each period of the search form estimation of search time delay multipath component of the signal. At each stage receive the evaluation components.

The original set of values of crucial functions, first the stage is formed by a set of values of crucial functions.

For each current phase of the read command from the control unit 69 from the output of the memory element of the original population decision function element 71 reads the source set of decision functions and served on the first input node of determining the maximum element 72 at the first sign of vicites 82, at the first input key 73 and the first input key 65.

The node determining the maximum element 72 on the control signals received at its second input from the fifth output control unit 69, select the element set of values of the current phase, which has a maximum value of crucial functions. As a node determine the maximum element 72 may be used, for example, the node 43, previously described. To determine the maximum element for the node 72 in the control unit 69 to form the control signals are the same as for site selection 43 block update component signals 21, except for the signals corresponding to the greatest number of elements. In this case, the greatest number of elements together decision function is equal to unity (L=1).

In such an implementation, the node determining the maximum element 72 form the address of the element together in the memory element of the original population decision function 71, which has a maximum value of crucial functions. The address of the selected maximum elem the NTA from the output node to determine the maximum element 72 is supplied to the fifth input of the control unit 69, which, with its first output is passed to the first inputs of the memory element of the original population decision function 71 and to the input of the memory element of the original population time delays 75.

Of the memory cell element of the original population decision function 71 with the address values of the maximum crucial functions at the first input key 73 and the first input key 65 reads the value of the maximum decisive function of the current phase, and from memory cells with the corresponding address of the memory element of the original population time delays 75 to the first input of vicites 78 and to the first input key 76 reads the time position corresponding to the maximum crucial functions.

To the second input key 65 and the first input of the logical node 67 from the second output control unit 69 receives a signal indicating the presence of a maximum of, for example, a logical unit. On this signal, the maximum value of the crucial features of the current phase with the first input key 65 is supplied to the second input of the comparator 66, which is compared with a threshold h.

The result of the comparison in the comparator 66 to form the control signal (threshold h). This output signal from the comparator 66 is supplied to the first input of counter 68, the second input of the logical node 67, the second controlled inputs key 73 and 76 and to the first input of the write register 80. On Vtorovo counter 68 from the third output control unit 69 receives the signal, corresponding to the number of detected component N multipath signal current period search.

If the maximum element of the aggregate of the current phase does not exceed the threshold h, the comparator 66 generates a control signal that is equal to, for example, a logical zero. On this signal the keys 73 and 76 is closed, the register 80 are reset to zero. According to the control signal from the comparator 66 and the signal indicating the presence of the maximum from the second output control unit 69 at the output of the logical node 67 form a signal equal to a logical unit, which is supplied to the second input circuit 70, to the first input of which receives the output signal from the counter 68. In this case, regardless of the output signal from the counter 68, the output signal of circuit 70 is equal to a logical unit and is supplied to the third input of the control unit 69, which in it form the control signals. The generated control signals received from the fourth output control unit 69 to the input of the memory register decisive search functions 74 and to the input of the memory register evaluation of search time delays 77 and from the first output control unit 69 to the input of the memory element of the original population decision function 71 and the memory element of the original population time delays 75. These signals formation evaluation search time delay multipath component signal stun is up and the contents of the memory registers 74, 77 read in block formation of soft solutions 15 and the power pack component signal 21.

If the maximum element of the aggregate of the current phase exceeds the threshold h, the comparator 66 generates a control signal equal to a logical unit. On this signal the maximum element of the original population through the key 73 is supplied to the second input of the memory register decisive search functions 74 and the first input of the shaper of the correction signal 81, and the value of the corresponding time delay is provided by a key 76 to the second input of the memory register to the time delay estimation search 77 and to the second input register 80 that are remembered. The value of the time delay, corresponding to the maximum element read from the output register 80 to the second input of vicites 78.

Temporary position (delay)corresponding to the element with the maximum value of crucial functions, consider the estimation of search time delay multipath components of the signal. For the next phase adjust elements of the set of values of the crucial features of the current phase.

The output of the logical node 67 by a signal from the comparator 66 (equal to a logical unit and a signal indicating the presence of the maximum from the control unit 69 form a signal equal to a logical zero, which is supplied to the second input circuit 70, to the first input of which p is trodden by the output signal from the counter 68.

The counter 68 summarizes the number of the threshold h in the comparator 66 and the accumulation of total value equal to the number of detected component N, produces a signal equal to a logical unit, which corresponds to the view of all elements of the original population of the current period. Otherwise, the signal at the output of counter 68 is equal to a logical zero. Signal equal to a logical unit, formation evaluation search time delay multipath component of the signal is stopped and the contents of the memory registers 74, 77 read in block formation of soft solutions 15 and the power pack component signal 21.

According to the control signal from the first output control unit 69 atomic read the values of the crucial functions of the memory element of the original population decision function 71 to the first input of vicites 82 and the corresponding time delay of the memory element of the original population time delays 75 to the first input of vicites 78.

Output vicites 78 form the difference between the time positions of each element of the aggregate of the current phase and the temporal position of the maximum element. The difference signals for each element of the aggregate of the current stage to the input of the shaper module 79. From the output of the shaper 79 module of the difference signal is supplied to the first input of the second comparator 83 and the Torah input shaper of the correction signal 81. To the second input of the comparator 83 serves time limit ηthat choose, for example, equal to two increments of time. If the module of the difference signal is not less than threshold η, then the output of comparator 83 form the control signal, for example, a signal equal to a logical unit, which is supplied to the fourth input of the control unit 69 and the fourth input of the shaper signal correction 81. On this signal at node 69 form the signal read signal write, which respectively receive the fourth output node 69 to the third input of the shaper of the correction signal 81 and the first output node 69 to the first input of the memory element of the original population decision function 71.

According to the control signal and the signal read into the driver signal correction 81 form a corrective value (the correction signal).

The correction value is chosen, for example, in proportion to the value of the maximum element and inversely proportional to the difference between the temporal positions of the maximum and the adjustable element of the set of values of the crucial features of the current phase.

Correction elements of the set of values of the crucial features of the current phase is produced, for example, subtracting the correction value from the corresponding element of the aggregate.

Correction value (the correction signal) from the output which the user of the correction signal 81 is supplied to the second input of vicites 82, in which correction values are decisive features of the aggregate of the current phase. The adjusted value is supplied to the second input of the memory element of the original population decision function 71.

The signal write the adjusted value of the crucial functions of the associated record in the memory element of the original population decision function 71 to the address of the adjustable element of the aggregate.

If the module of the difference signals more threshold ηthen the correction of the corresponding element of the set of values of the crucial features of the current phase is not produced.

After analysis of all elements of the set of values of the crucial features of the current phase is the maximum element in the memory element of the original population decision function 71 zero.

Thus at each current step, form the set of values of crucial functions and corresponding time delays for analysis at a later stage.

Embodiment of schema discovery rays 64 are presented in figure 10.

Does the detection scheme rays as follows.

The comparator 84 compares the values of the crucial functions in given discrete time positions field multipath arriving from the output of the multiplexer 20, the threshold value h from the shaping circuit threshold 18 and generate a signal indicating the exceeding of the threshold h in predetermined discrete positions. This signal is applied to the control unit 69, and is used as a recording signal. When exceeding the threshold value is crucial functions through the key 86 is received on the second input of the memory element of the original population decision function 71, and the corresponding temporary position (delay) from the control circuit 19 through the key 87 is received on the second input of the memory element of the original population time delays 75.

In the adder 85 perform the accumulation of the number exceeds a threshold h and form a signal corresponding to the number of detected component N, which is supplied to the first input of the control unit 69.

Embodiment of the driver of a correction signal 85 figure 11 presents.

The proposed shaper signal correction works as follows.

According to the control signal from the control unit 69 is crucial functions, the maximum element of the aggregate of the current stage record from the output of the key 73 in register 88, and the signals of the module of the difference between the time delays of the maximum element and the analyzed element together sequentially recorded from the output of the shaper module 79 in the register 92. These signals are read from the output register 88, 92 to the inputs of driver relations 89, which consistently form a relationship of the values of the crucial functions of the maximum element of the aggregate of the current stage to the ignal of the difference between the time delays of the maximum element and the analyzed element together. Signal relations scale in the multiplier 90 by multiplying by a factor of αselected, for example, the results of computer modeling. The signal from the comparator 83, equal to a logical unit for items collectively, temporary positions which are different from the temporary position of the maximum element is not more than a specified time threshold ηoutput signal of the multiplier 90 through the key 91 is supplied to myCitadel 82.

The option to perform logical node 67 presented at Fig.

Standard logic element And 93 and 94 item is NOT included in the logical node 67 so that the signals from the control unit 69 and the comparator 66 is formed a control signal to terminate (logical unit) or continuing (logical zero) process evaluation of search time delay multipath component of the signal.

The memory registers 74, 77 can be implemented on the basis of register with serial input and parallel output, for example, on a standard chip series P or series IR.

The counter 68 may be implemented, for example, on the basis of standard programmable counter series EE and other

The control unit 69 may be implemented in various ways, for example, modern microprocessors digital signal processing (DSP) - TMS320Cxx, Motorola 56xxx, Intel, etc.

We offer the th method of generating soft decisions when receiving a multipath signal is as follows.

- Carry out the selection multipath component of the signal, then:

- estimate the power of the multipath component of the signal;

- perform the ranking component of a multipath signal in descending order of their power;

- consistently for all ranked multipath component of the signal except the first;

form the ratio of the power components to the sum of the capacities of all the previous ranked component;

compare the generated ratio with a preset threshold ν;

in case of exceeding the threshold component selected for formation of soft decisions;

in the case of non-exceeding of the threshold selection component completes.

- Generate a sequence of correlation responses of information symbols for each selected multipath components of a signal.

- Perform a weighted summation of the correlation responses of information symbols of all selected component of a multipath signal, receiving the combined soft-decision information symbols.

Threshold ν choose, for example, a valid energy losses due to restrictions used for demodulation component, such as loss of 0.1 dB ν=0,03.

Correlation feedback information symbols for each selected multipath components of the signal form, for example, determining to whom relatio input signal with a known SRP on intervals of length characters.

The weights when summing the correlation response information symbols selected multipath component of the signal is chosen, for example, as a complex conjugate of the estimate of the complex envelope of information symbols multipath component of the signal.

To implement the method of forming a soft solutions proposed device is presented on Fig where indicated:

13 is a multichannel receiver data

14 is a diagram combining soft decisions

95 is a memory register,

96, 103, 109 - first, second, and third multiplexers,

97, 102, the first and second Comparators,

98 diagram OR,

99 - counter,

100 - the scheme is NOT,

101 - key,

104, 106, 110 first, second and third memory node,

105 - adder,

107 - driver relations,

108 - site evaluation capacity

111 site ranking

112 - the management node.

Device for the formation of soft solutions provides multichannel data receiver 13, the first and second inputs which are used as inputs in-phase and quadrature components of the component of the input signal and the first and second inputs of the device. The third input device is input to the time delay and the first inputs of the second multiplexer 103. The fourth input device is the input values of the crucial search function of the current stage and the first input of the first multiplex the RA 96. The output of the multichannel data receiver 13 is connected to the input circuit combining soft decisions 14, which is the input sequence correlation response information and pilot symbols multipath component of the signal and to the input of the node cardinality estimation 108, which is the input sequence of the correlation responses of the pilot symbols multipath component of the signal. In addition, the output of the multichannel data receiver 13 is the output sequence of the correlation responses of the pilot symbols and the time delay multipath component signal and the second output device. The first output is the output of the combined soft decision scheme combining soft decisions 14. The second inputs of the first multiplexer 96 and the second multiplexer 103 are managers and are connected with the first output control unit 112. The output of node cardinality estimation 108, which is the output cardinality estimation component multipath signal (deciding the search function), connected to the first input of the third multiplexer 109. The output of the first multiplexer 96 is combined with the output of the third multiplexer 109, which is the output signal of the cardinality estimation component, and connected to the first input of the third memory node 110. The output of the second multiplexer 103, which is the exit time delays updating the data component of a multipath signal, connected to the first input of the first memory node 104, the second input is combined with the second input of the third multiplexer 109 and is connected with the second control the output control unit 112. The third output control unit 112 is the output of the control signals and is connected to a second input of the third memory node 110, the first input of the first comparator 97 and the first input of the memory register 95. The output of the third memory node 110, which is the output cardinality estimation current components, connected to the first input node ranking 111, the first input of the adder 105 and the first input of the shaper relations 107, which are formed by relations of power current components to the sum of the capacities of all the previous ranked component. The output of node ranking 111, which is the output of ordered addresses of the memory cells connected to the first input of the control unit 112. The second input node ranking 111 is connected with the fourth control the output control unit 112. The fifth output control unit 112, which is the output of the recording signal, is connected to the second input of the second memory node 106, the first input connected to the output of the adder 105. The output of the second memory node 106, which is the total output capacity of all previous ranked component is connected with the second input of the adder 105 and the second input of the shaper relations had driver power ratio 107 is connected to the first input of the second comparator 102, the second input which is the input of the threshold value ν. The output of the second comparator 102, which is the output signal of the comparison of the generated power ratio of the current components to the sum of the capacities of all the previous ranked component with a given threshold ν, is connected to the input circuit 100 with the input of the counter 99 and with the first input key 101. The second input key 101 is connected to the output of the first memory node 104. The output of switch 101, which is the output of the time delay multipath components of the signal, is connected to the second input of the memory register 95. The output of the memory register 95, which is the aggregate output time delays selected a component connected to the third input of the multichannel data receiver 13. The output of the circuit 100 is inverted yield and connected to the first input circuit OR 98. The output of the counter 99, which is an output signal equal to the number of over-threshold νconnected with the second input of the first comparator 97. The output of the first comparator 97 is connected with the second input circuit 98, the output of which is the output of the signal indicating the completion of the selection procedure component for the formation of soft decisions and connected with the second input of the control unit 112.

Device for the formation of soft decisions is as follows.

In the proposed device for forming makinesini (demodulation) of the information signal of the current period pre-exercise screening component of the multipath signal. The selection procedure is made ranked in descending order of power of the combined multipath component of the signal detected in the search block 12, and the component to be processed in the scheme of combining soft decisions 14. The selection procedure is carried out for each period of the search.

As selection criterion multipath component of the signal, which is used in the formation of soft decisions, accept the fact of exceeding a given threshold value, equal to the ratio of the power of the investigated components to the total output of all the previous component, ranked in descending order of their power.

On the first and the second input of the multichannel data receiver 13 receives respectively the in-phase and quadrature component component input multipath signal. From the outputs of the control unit 11 to the first inputs of the multiplexer 103 receives the time delays updated multipath component signal of the current period.

With the first search block 12 to the first input of the multiplexer 96 receives the values of the crucial functions search for the current period, equivalent to the capacity of the respective component. Output multichannel data receiver 13 to the input of the node cardinality estimation 108 receives a sequence of correlation responses of the pilot symbols specified multipath component of the signal at the input of the differential combining soft decisions 14 receives the sequence of correlation feedback information and pilot symbols specified multipath component signal, at block update signal 21 is fed the sequence of correlation responses of the pilot symbols and the time delays specified component of a multipath signal.

Multichannel data receiver 13 of the proposed device can be implemented similarly multi-channel receiver placeholder data. The time delays specified component of a multipath signal in the device prototype form in layout tracking delay receiver data output signal which can be used in the proposed device.

In the node cardinality estimation 108 correlation responses of the pilot symbols specified multipath component of the signal form the estimate of the power (decisive the search function) specified multipath component of the signal. The generated signal cardinality estimation component is fed from the output of the node cardinality estimation 108 at the first input of the multiplexer 109. As the node cardinality estimation 108 can be used, for example, the node cardinality estimation 40, previously described.

According to the control signals received from the first output control unit 112 on the second inputs of the multiplexers 96 and 103, the input signals of the multiplexer element receives respectively at the first input node of the memory 110 and to the first input node memory 104.

According to the recording signal supplied from the second output control unit 112 to second the d input of the memory node 104, time delays updated multipath component of the signal current period and estimation of search time delay multipath component of the signal output from the multiplexer 103 is written in the memory.

According to the control signal received from the second output control unit 112 to the second input of multiplexer 109, the signal evaluation capacity specified component through the multiplexer element 109 is supplied to the first input node of the memory 110.

According to the recording signal from the third output control unit 112, which is supplied to the second input node of the memory 110 of the cardinality estimation component record in memory.

Thus in the node memory 104 remember the time delays updated multipath component of the signal current period and in the host memory 110 memorize the corresponding values of the estimated power of the multipath component of the signal current period. When this time delay and the corresponding values estimated power component memorize in the memory cells of the nodes 104 and 110 at the same address.

The signal reading coming from the third output control unit 112 to the second input node of the memory 110, carry out the reading power ratings updated multipath component of the signal current period, which are output from the memory node 110 receives at the first input node ranking 111.

Node ranking 111 in coma the dam management, coming from the fourth output control unit 112 to the second input node 111, the addresses of memory cells are ordered in such a way that placed them in the cardinality estimation component was located in the descending order. Ordered the addresses of memory cells are received from the output node ranking 111 to the first input of the control unit 112.

As a site ranking 111 can be used, for example, the node 43, previously described. In the control node 112 to node ranking 110 form the control signals are the same as for site selection 43 block update component signal 21, except for the signals corresponding to the greatest number of elements. In this case, the greatest number of elements in the population is equal to N (i.e. L=N).

Of the memory cells of the host 110, located at the addresses received from the third output control unit 112 to the second input node of the memory 110, an atomic read of the cardinality estimation component of a multipath signal in descending order. Read the cardinality estimation component from the output of the memory node 110 receives at the first input of the adder 105 and the first input of the shaper relations 107. At the same time of the memory cells of the memory node 104 located at the addresses received from the second output control unit 112 to the second input node memory 104, an atomic read the corresponding time delay components is NT multipath signal, which from the output of the memory node 104 receives the second input key 101.

The signal read, which comes from the fifth output control unit 112 to the second input of the host memory 106, to the second input of the adder 105 and to the second input of the shaper relations 107 from the output of the memory node 106 receives a signal equal to the sum of capacities of all previous ranked component together.

In the adder 105 carry out the summation of the capacity of the current components with the total capacity of all previous ranked component population of the host memory 106. The result of the summation output of the adder 105 is supplied to the first input node of the memory 106. According to the recording signal from the fifth output control unit 112 is supplied to the second input node of the memory 106, the result of summation remember.

Thus, in the adder 105 and the host memory 106 perform element-by-element accumulation (summation) estimates power multipath component of the signal. For each step of the analysis to the second input of the shaper relations 107 from the output of the memory node 106 receives the current sum of the power ratings ranked multipath component of the signal and to the first input of the shaper relations 107 from the output of the memory node 110 receives the value of the cardinality estimation of the current components.

The former relations 107 for each step of analysis of the form of the relationship is the capacity of the current components and the sum of capacities of all previous ranked component b.

The received signal from the output of the shaper relations 107 is supplied to the first input of the comparator 102, to the second input of which receives the specified signal threshold ν.

Threshold ν choose, for example, a valid energy losses due to restrictions used for demodulation component, such as loss of 0.1 dB, ν=0,03.

The comparator 102 compares the generated ratio of the power of the current components to the sum of the capacities of all the previous ranked component with a given threshold νand the result of the comparison is fed to the input circuit 100, the input of the counter 99 and to the first input key 101.

Inverted signal from the output of the circuit 100 is supplied to the first input circuit OR 98.

In case of exceeding the threshold in the comparator 102 to form the control signal, for example, in the form of a logical unit. On this signal, the corresponding time delay multipath components of the signal through the switch 101 is supplied to the second input of the memory register 95. According to the recording signal, which is supplied from the third output control unit 112 to the first input of the memory register 95, write delay this multipath components of the signal in the memory register 95.

At the output of the counter 99 for each step of the analysis form the signal, equal to the number of over-threshold νthat is fed to the second input of the comparator 97. At the first input is comparator 97 from the third output control unit 112 receives the signal, equal to the number of component recorded in the host memory 110. The results of the comparison output of the comparator 97 form a signal equal to a logical unit, if the signal is equal to the number of over-threshold ν not less than the number of the component is recorded in the host memory 110 and is equal to a logical zero otherwise. This signal from the output of the comparator 97 is supplied to the second input circuit 98, the output of which form the signal indicating the completion of the selection procedure component for the formation of the soft decisions. This signal equal to a logical unit in the case of non-exceeding of threshold ν or when the number of over-threshold ν not less than the number of the component is recorded in the host memory 110, and is supplied with the output of the circuit OR 98 to the second input of the control unit 112.

The signal indicating the completion of the selection procedure component for the formation of the soft decisions in the control unit 112 form the signal read, which from the third output node 112 is supplied to the first input of the memory register 95. On this signal from the memory register 95 reads the set of time delays selected component, which is supplied to the third input of the multichannel data receiver 13.

In the scheme of combining soft decisions 14 correlation responses of the selected component information symbols multipath signal current period exercise weighted summing the s, receiving the combined soft-decision information symbols selected multipath component of the signal that arrives at the output device. Weight in the weighted sum of the correlation response information symbols exquisite multipath component of the signal is chosen, for example, as a complex conjugate of the estimate of the complex envelope of information symbols specified multipath component of the signal that arrives at the block combining soft decisions output multichannel data receiver 13.

The memory register 95 may be implemented on the basis of register with serial input and parallel output, for example on a standard chip series P or series IR.

The control unit 112 may be implemented in various ways, such as modern microprocessors digital signal processing (DSP) - TMS320Cxx, Motorola 56xxx, Intel, etc.

1. The way of reception of multipath signals, namely, that when taken periodically determine the number and time delay multipath component of the signal, which determines the time domain multipath, conduct a search signal in multipath and determine the grade of search of numbers and the time delay multipath component of the signal form the updated number and time delay multipath component of the signal on the W ill result in temporary delay multipath component of the signal current period, keeping updated time delay multipath component of the signal using these time delays, form soft decision information symbols, characterized in that the formation of the updated number and time delays multipath component of the signal is carried out multipath component signal of the previous period and the estimated search time delay multipath component of the signal that are different from the time delay of each multipath component signal of the previous period by more than the given value Th, and if the number of components formed together do not exceed the specified number L, then the updated number of components is equal to the number of components formed together, and the updated time delay multipath component of the signal equal to the delay component of the aggregate, if the number of components formed together more than a given number L, then assess the capacity component together and choose L to be the most powerful component, the time delays which are updated time delay multipath component of the signal, in this case, the updated number of the component is equal to L.

2. The method according to claim 1, wherein the time domain multipath is defined as the time domain delay, Acala which the value of t1 is less than the minimum time delay multipath component signal of the previous period, and the end - t2 is greater than the maximum time delay multipath component signal of the previous period.

3. The method according to claim 1, characterized in that the value of Th is chosen equal to half the chip SRP.

4. The method according to claim 1, characterized in that the value of L is chosen equal to the maximum number of multipath component being used for demodulation of data.

5. The method according to claim 1, characterized in that the power of the multipath component of the signal appreciate the crucial search function.

6. The search method when receiving a multipath signal, namely, that form a complex correlation responses of the pilot signal, determining the correlation of the input signal with a reference signal corresponding to a given discrete time delays region multipath, determine the values of crucial functions for the given discrete time delays region multipath, summing the squares of the inphase and quadrature parts of the corresponding complex correlation responses of the pilot signal, compare the values generated crucial functions with a given threshold h, wherein forming the set of values of crucial functions, exceeded the threshold, and the sum of the corresponding time delays, phases form estimation of search time delay multipath component signal at each of the stage get the evaluation components, why define an element with the maximum value of the set of values of crucial functions in the current stage, the set of values of the decisive features of the first stage is formed by a set of values of crucial functions, compare the maximum value of the crucial features of the current phase with a threshold h, in the case of not exceeding the threshold formation evaluation search time delay multipath component of the signal stop, in case of exceeding the threshold time delay corresponding to the element with the maximum value of crucial functions in the current stage, consider the estimation of search time delay multipath components of the signal, adjust the elements of the set of values of crucial functions in the current stage, form the set of values of the decisive features of the subsequent stage, excluding from the corrected set of values that are of crucial functions in the current phase of the element with the maximum value.

7. The method according to claim 6, characterized in that the threshold h is chosen proportional to the noise power.

8. The method according to claim 6, characterized in that the adjustment element of the set of values of the crucial features of the current phase is produced by subtracting the correction values of the elements together, the time delays are different from the time delay of the maximum element is e more than a specified time thresholdη.

9. The method according to claim 6, characterized in that the correction value is chosen proportional to the maximum element and inversely proportional to the difference between the time delays of the maximum and the adjustable element of the set of values of the crucial features of the current phase.

10. Method of generating soft decisions when receiving a multipath signal, namely, that form the sequence of correlation feedback information symbols multipath component of the signal, perform a weighted summation of the correlation response information symbols multipath component of the signal, receiving the combined soft-decision information symbols, wherein before the formation of the sequence of correlation feedback information symbols carry out the selection component of the multipath signal, which assess the capacity of the multipath component of the signal, perform the ranking component of a multipath signal in descending order of their power, consistently ranked multipath component of the signal, except the first, form the ratio of the power components to the sum of the capacities of all the previous ranked component compare the generated ratio with a preset thresholdνif pre is ysenia threshold component selected for forming soft solutions in the case of not exceeding the threshold selection component is complete, the formation sequence of the correlation responses of information symbols and their weighted summation is carried out for selected multipath component of the signal.

11. The method according to claim 10, characterized in that the threshold ν choose a valid energy losses due to restrictions used for demodulation component.

12. The method according to claim 10, characterized in that the correlation feedback information symbols for each selected multipath components of the signal form, determining the correlation of the input signal with a known SRP on an interval of length characters.

13. The method according to claim 10, characterized in that the weights when summing the correlation response information symbols selected multipath component of the signal is chosen as the complex conjugate of the estimate of the complex envelope of information symbols multipath component of the signal.

14. The pickup device of multipath signal containing the search block, the control block, the block formation of soft decisions, with the first and second inputs of the search block and block formation of soft decisions are used as inputs in-phase and quadrature components of the input beam signal, the third input of the search block is connected to the first output unit UE is Alenia, which is a control output, the second output control unit that outputs are time delays updated multipath component of the signal current period, is connected with the third input of block formation of soft decisions, the first output unit forming a soft decision is output soft decision information symbols and an output, wherein the inputs of the power pack component signal, and the output of the search block, which is the output of the estimated time delays and values of the decision function search multipath component of the signal connected to the first input unit updates the component signal and the fourth input of the unit forming the soft decisions output unit updates the component signal, which is output to the time delay updated multipath component of the signal connected to the input of the control unit, the second output unit forming a soft decision is output correlation responses of the pilot symbols and the time delay multipath component signal of the previous period and is connected with the second input of the block update component of the signal.

15. Block search multipath signal with a quadrature correlators, a method of forming the threshold, the pseudo-random sequence generator, the control scheme is Oia, the multiplexer, and the first and second inputs of the correlators are first and second inputs of the circuit formation threshold and the input in-phase and quadrature components of the input beam signal, the third input of each of the quadrature correlator is input pseudo-random sequence and is connected to the corresponding output of a pseudorandom sequence generator, the fourth input of each of the quadrature correlator, which is the input control signal, is connected with a corresponding first output of the control circuit, the second output of the control circuit, which is the output of the phase shifts of the pseudo-random sequence generator, is connected to the input of the pseudo-random sequence generator, the output of each quadrature correlator, which is the value of crucial functions for given the time delays region multipath, is connected with the corresponding input of the multiplexer, the input control circuit is the input control signals, characterized in that the detection scheme rays, the first, second and third key, the first and second comparator, logical node, counter, site management, scheme OR, the node determining the maximum element, the first and second myCitadel, shaper module, a register, a memory element source is backupnode decision function, the memory element of the original population time delays, the memory register decisive search functions, a memory register evaluation of search time delays, the driver of a correction signal, and the output of the multiplexer, which is the value of crucial functions, the area of multipath, is connected to the first input of the differential detection beams, the second output of the control circuit, which is the output of the phase shifts of the pseudo-random sequence generator, is connected with the second input of the differential detection beams, the output of the shaping circuit threshold, which is the output of the threshold value, is connected to the third input of the differential detection beams and the first input of the first comparator, the first circuit output detection rays, which is the output time delays, is connected to a second input of the memory element of the original population to the time delay, the second output circuit detection rays, which is the output values of the decision function, exceeded the threshold, is connected to a second input of the memory element of the original population decision function, the third circuit output detection rays, which is an output signal equal to the number of detected component, exceeded the threshold, connected to the first input of the control node, the fourth circuit output detection rays, which is an output signal indicating previsani the threshold for a given discrete time delay connected with the second input of the control node, the first output control node, which is the output of the recording signal, connected to the first input of the memory element of the original population decision function and to the first input of the memory element of the original population to the time delay, the output of the memory element of the original population decision function, which is the maximum output of crucial functions in the current stage, connected to the first input node of determining the maximum element, with the first input of the second myCitadel, with the first inputs of the first and second keys, the second input node of determining the maximum element is the control input and is connected to the fifth output control node, the output node determine the maximum element, which is the access address of the selected maximal element, connected to the fifth input of the control node, the second output control node which is an output signal indicating the presence of a maximum, is connected with the second input of the first key and the first input of the logical node, the output of the first key is connected with the second input of the first comparator, the output of the first comparator, which is the output of the threshold, is connected to a second input of the logical node to the first input of the counter, with the second controllable inputs of the second and third keys, with the first input register, the third in the course of the control node, which is the output number of the identified component of the current search period, is connected to a second input of the counter output of the counter is connected to the first input circuit OR the second input of which is connected to the output of the logical node, the output of the circuit OR, which is the indicator of the end of the search process, connected with a third input of the control node, the fourth output control node, which is the output of the control signal formation evaluation search, connected to the first input of the memory register decisive search functions, with the first input of the memory register evaluation of search time delays and with the third input of the shaper of the correction signal, the second input of the memory register decision function search and the first input of the shaper signal correction combined and connected to the output of the second key, which is the output of the maximum value of crucial functions in the current stage, the second input of the memory register evaluation of search time delays and case the joint and is connected to the output of the third key, the first input of which is combined with the first input of the first vicites and is connected to the output of the memory element of the original population to the time delay, which is the output value of the time delay, corresponding to the maximum element, the output register, which is the output values of a time delay and, connected with the second input of the first myCitadel, the output of the first myCitadel, which is the output of the differential time delays, is connected to the input of the shaper module, the module output signal difference generator module connected with the second input of the shaper of the correction signal and the first input of the second comparator, the second input of the second comparator threshold is input, the output of the second comparator is the output of the threshold value and is connected to the fourth input of the control node and the fourth input of the shaper of the correction signal, the output of the shaper of a correction signal, which is the output of the correction signal, is connected to the second input of the second myCitadel, the output of which is connected to a second input of the memory element of the original population decisive functions, the output of the memory register evaluation of search time delays and the output of the memory register decisive search functions are combined and output block search multipath signal.

16. Block the formation of soft solutions containing multi-channel receiver data and schema combining soft decisions, the first and second inputs multi-channel receiver data inputs are in-phase and quadrature components of the component of the input signal and the first and second inputs of block formation of soft decisions output multichannel data receiver is connected to the input circuits of the combination of soft solutions which is the input sequence correlation response information and pilot symbols multipath component of the signal output combined soft decision scheme combining soft decisions is the first output block formation of soft decisions, wherein the inputs of the memory register, the first, second and third multiplexers, the node estimates the power key, the first, second and third memory nodes, counter, adder, the first and second Comparators, the scheme OR the scheme is NOT, site ranking, driver relations, site management, and a third input of block formation of soft decisions is input to the time delay and the first inputs of the second a multiplexer, a fourth input block formation of soft decisions is the input values of the crucial search function of the current stage and the first input of the first multiplexer, the output of the multichannel data receiver connected to the input node cardinality estimation, which is the input sequence of the correlation responses of the pilot symbols and the time delay multipath component of the signal, in addition, the output multi-channel receiver data is the output sequence of the correlation responses of the pilot symbols and the time delay multipath component signal and the second output block formation of soft decisions, the WTO, the s inputs of the first and second multiplexers are managers and are connected with the first output control node, the output of node cardinality estimation, which is the output cardinality estimation component of a multipath signal, connected to the first input of the third multiplexer, the output of the first multiplexer is combined with the output of the third multiplexer, which is the output signal of the cardinality estimation component of a multipath signal, and connected to the first input of the third memory node, the output of the second multiplexer, which is the exit time delays updated multipath component of the signal connected to the first input of the first memory node, the second input is combined with the second input of the third multiplexer and connected to the second control the output of the control node, the third output of the control node is the output of the control signals and connected to a second input of the third memory node, the first input of the first comparator and the first input of the memory register, the output of the third memory node, which is the output cardinality estimation current components, connected to the first input node ranking, the first input of the adder and the first input of the shaper relationship, the output of node ranking, which is the output of ordered addresses of the memory cells connected to the first input of the control node, a second input node ranking connected with the fourth control the output control node of the fifth output control unit, which is one is by the output of the recording signal, connected with the second input of the second memory node, a first input connected to the output of the adder, the output of the second memory node, which is the total output capacity of all previous ranked component is connected with the second input of the adder and the second input of the shaper relationship, the output of the shaper relations connected with the first input of the second comparator, the second input of which is the threshold input, the output of the second comparator, which is the output signal exceeding the threshold, connected to the input schema with the input of the counter, and with the first input key, the second input key is connected to the output of the first memory node, the output of the key that is the exit time delay multipath components of the signal, is connected to the second input of the memory register, the output of the memory register, which is the aggregate output time delays selected a component connected to the third input of the multichannel data receiver, the output of the circuit is NOT inverted output and connected to the first input circuit OR the output of counter is signal output equal to the number of the threshold, and is connected with the second input of the first comparator, the output of the first comparator is connected with the second input circuit OR the output of which is the output of the signal indicating the completion of the selection procedure component for forming soft is eseni and connected with the second input node control.



 

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