The device and method of forming extend the code and spread spectrum channel signals using the extend code in the communication system, multiple access, code-division multiplexing

 

(57) Abstract:

The invention is used in mobile communication systems, multiple access and code division multiplexing (mdcr). The device includes a generator psevdochumoy (PN) code sequence for forming PNiand PSHqsequences; generator orthogonal codes, which perform the state transitions of differential phase-shift keying (DMF) at intervals of at least two elements of the code; and the generator extends codesiand Cqfor the formation extends codesiand Cqby mixing (221, 223, 224) PSHiand PSHqcode sequences with the first and second orthogonal codes, so that the current phase extends codesiand Cqalternately performs the state transitions of the quadrature phase-shift keying (FMC) and FMD in relation to the previous phase extends codesiand Cq. Effect: reduction of the ratio of maximum power to average power without degrading the characteristics of the error rate, in bits. 11 C. and 16 h. p. F.-ly, 22 ill.

The present invention relates to a device and method for spread spectrum gloobe formation extending sequences.

Mobile communication systems, multiple access, code-division multiplexing (mdcr) was improved from the current standard of mobile communication, which mainly provides voice service to IMT-2000, which can provide not only voice service but also service high-speed data transmission. For example, IMT-2000 can provide high-quality voice communication services, transmission of moving images and search on the Internet. In communication systems mdcr transmission line between the base station and mobile station contain a straight line for transmission from the base station to the mobile station and return line for transmission from the mobile station to the base station.

In communication systems mdcr in the return line is typically used a complex scheme based expansion pseudotumor (PN) code as a way of expanding the range of frequencies. However, a complex scheme of expansion based on the PN code is faced with the problem, when the power amplifier increases the ratio of maximum power to average power (LGUs) under the influence of the user data. In the back of the line, increasing the ratio of maximum power to average power transfer calls so I in the mobile stations. The characteristic of the power amplifier in a mobile station has a linear region and a nonlinear plot. When the transmit power of the mobile station increases, the signal of the mobile station will enter the non-linear plot, creating interference in the frequency zones of other users, what is called the phenomenon of "growth". So as not to create interference for the frequency zones of other users, the cell size of the cell must be reduced, and the mobile station in the cell the cell is to transmit signals to the corresponding base station at a lower transmit power. Therefore, there is a need in the way of expanding the range of frequencies, which reduces the MLA, while minimizing the deterioration of the characteristics of the error rate in bits (hospital has no facilities), which affects the entire system.

Description PSH integrated schema extensions described below with reference to the transmitter in a conventional communication system mdcr.

Fig. 1 illustrates channel transmitter containing a device for expanding the range of frequencies for communication systems mdcr. As shown, channel transmitter contains orthogonal expander 101, complex multiplier 102, the generator 103 PN sequence and the block 104 low-pass filtering and modulec 101 after channel coding, repetition and alternation through the appropriate channel encoders (not shown). Orthogonal extender 101 then multiplies the input channel data on the unique orthogonal code assigned to the corresponding channel of an orthogonal expansion of the range of the input channel data. Usually, the orthogonal codes are Walsh codes. The generator 103 PN sequences forms an expanding sequence for spread spectrum signals of the respective transmission channels. Usually as expanding sequences used PN sequence. Complex multiplier 102 carries out complex multiplication of the output signals of the orthogonal spreader 101 on expanding sequence from the outputs of the generator 103 PN sequences for the formation of complex extended signals. Block 104 low-pass filtering and modulation filters in the main strip of advanced integrated signals issued from the complex multiplier 102, and then converts the filtered into the main band signals in the RF (radio frequency) signals.

In Fig. 2 shows a detailed block diagram illustrating channel transmitter of Fig.1 for a return line structure, channel interleaving and binary conversion so that the signal "0" is converted into "+1" and the signal "1" to "-1" before putting them into the appropriate channel. The data of the respective channels are multiplied by a unique orthogonal codes in the multipliers 111, 121, 131 and 141. According Fig.2, channel transmitters includes transmitter control channel, the transmitter channel and the transmitter of the main channel. As stated above, usually as orthogonal codes, which extend the respective channels, are Walsh codes. Orthogonal extended data control channel, an additional channel and the main channel are multiplied by the gain corresponding to each channel, from the first to the third, with the help of the controllers 122, 132 and 142 amplification. Channel data is summed binary adders 112 and 133 and then entered into the complex multiplier 102. Here, output signals of the binary adders 112 and 133 will be called the "channel data".

Complex multiplier 102 multiplies the output signals of the adders 112 and 133 extend codes for the implementation of spread spectrum. As stated above, the PN codes from the output of the generator 103 PN sequences used in kachestvennom code and can have a value consisting of "+1" and "-1". If not specified, it is assumed that the PN codes have a value consisting of "+1" and "-1".

With regard to the complex multiplier 102, the channel data from the output of the adder 133 is served in the multipliers 123 and 134. In addition, extending the code PSHifrom the output of the generator 103 PN sequence is fed to the multipliers 113 and 123, and extend the code PSHqfrom the output of the generator 103 PN sequence is fed to the multipliers 134 and 143. The output signals of the multipliers 113 and 134 are subtracted one from the other in the adder 114, and then served in the first filter 115 of the lower frequencies; and the output signals of the multipliers 123 and 143 are added to each other in the adder 135 and then fed to the second filter 136 of the lower frequencies.

A valid signal from outputs of binary adder 114 is introduced into the first filter 115 of the lower frequency, and the imaginary signal is being input to the second filter 136 of the lower frequencies. The output signals of filters 115 and 136 of the lower frequencies are regulated by amplification using respectively the fourth and fifth controllers 116 and 137 transmission ratios are then modulated, are summed and transmitted through the transmission channel. Block 104 low-pass filtering and modulation filters lower Cogo adder 118.

It was suggested several ways to reduce the MLA of the signals output from the first and second filters 115 and 136 of the lower frequencies. These methods are based on how the generator 103 PN sequences forms a widening codes PSHiand PSHq. In General, the ratio of maximum power to average power MHI depends on the zero crossing which occurs when the signs PSHiand PSHqat the same time change, and the state of the commit phase, which occurs when the signs PSHiand PSHqdo not change. More specifically, the zero-crossing (PND) occurs when, for example, the initial state of the first quadrant is transferred to the third quadrant, causing a phase shift . In addition, the state of the commit phase occurs when, for example, the initial state of the first quadrant remains in the first quadrant that does not cause phase shift.

As mentioned above, under normal extension using quadrature phase-shift keying (CPM) phase is formed which extends codes can go from the first quadrant in any of the first, third, and fourth quadrants in accordance with the value of PN codes. According to this, when using Oba is zero and phenomena commit phase. Therefore, in the communication system mdcr in expanding the range of CMI increases depending on PSHiand PSHq.

The present invention is a device and method of forming the expanding sequence, which can reduce the ratio of maximum power to average power without compromising hospital has no facilities in the communication system mdcr.

Also the present invention is a device and method for rolling forming a PN sequence using the FMC and differential phase-shift keying (FMD) with phase shift on /2 as expanding sequence in the communication system mdcr.

Another object of the present invention is to provide a device and method of forming the PN sequence with the FMC /2-FMD and zero crossing or locking phase and phase shift in the communication system mdcr.

Also the present invention is a device and method of forming the expanding sequence, which in turn DFM performs the phase shift and the CPM phase shift by mixing PN sequence with a specific orthogonal code in the communication system mdcr.

Also the present invention is a device and method of forming the expanding sequence, which repeats the law of phase shift of the FMC, the phase shift FMD, the zero-crossing or commit (POF), phase shift FMD by mixing PN sequence with a specific orthogonal code in the communication system mdcr.

Another object of the present invention is to provide a device and method for forming an expanding sequence with phase shift of the FMC, the phase shift FMD, the phase angle 270oor 0oby mixing the generated PN sequence with the previous expanding sequence and formation of the expanding sequence, which again carries out the phase shift of the FMC, FMD and the zero-crossing or fixation and DMF by choosing formed expanding sequence in the communication system mdcr.

Also the present invention is a device and method is ve expanding sequence, and the expansion/contraction over the entire frequency spectrum of the channel signal using a set of expanding sequence in the communication system mdcr.

Another object of the present invention is to provide a device and method of forming a PN sequence using the FMC, FMD-shift phase /2, the zero-crossing or lock phase shift as a widening of the code, and the expansion/contraction of the channel signal using a set of expanding sequence in the communication system mdcr.

The above results are achieved in accordance with the invention, in the apparatus for forming extend codes for communication systems mdcr containing the generator PN sequence for forming PNiand PSHqsequence generator orthogonal codes for the formation of the first and second orthogonal codes, which carry out the transitions from the state of FMD at intervals of at least two elements of the code; and the generator extends codes for formation extends codes Ciand Cqby mixing PSHiand PSHqsequences with the first and second orthogonal codes, so tekuma to the phase preceding extends codes Ciand Cq.

The above and other objectives, features and advantages of the present invention are explained in the following detailed description, illustrated by drawings showing the following:

Fig. 1 is a block diagram illustrating channel transmitter for a communication system mdcr;

Fig.2 is a detailed block diagram channel transmitter return line connection for the communication system mdcr;

Fig. 3-6 - charts illustrating respectively the transition to the basic conditions for zero-crossing commit +/2-DFM -/2-FMD;

Fig. 7 is a flowchart illustrating a method of forming expanding sequence using /2-DFM device for spread spectrum communication mdcr;

Fig. 8 is a flowchart illustrating a method of forming extend sequences using the FMC /2-DMF device for spread spectrum communication mdcr;

Fig. 9 is a timing diagram illustrating the formation of expanding sequences based on the FMC /2-DFM using the scheme in Fig.8;

Fig. 10 is a time chart showing transitions of the States of the FMC, /2-FMD in the scheme of formation of expanding sequences based on the FMC /2-FMD;

Fig. 12 is a time chart showing transitions of the States /2-DFM, FMC, when the expanding sequence is formed ahead of one code element in the communication system mdcr;

Fig. 13 is a time chart showing transitions of the States /2-DFM, FMC, when the expanding sequence is generated with a delay of one code element in the communication system mdcr;

Fig. 14 is a block diagram of the generator extends the code that performs transitions from state D To using a delay of one code element in accordance with the embodiment of the present invention in the communication system mdcr;

Fig. 15 is a block diagram of the generator extends the code that performs transitions from state D To using a delay of one code element in accordance with another embodiment of the present invention in the communication system mdcr;

Fig. 16 is a block diagram of the generator D To extend the code in accordance with the embodiment of the present invention in the communication system mdcr;

Fig. 17 is a timing chart generator D To extend the code in accordance with the embodiment of the present invention in the communication system mdcr;

Fig. 18 is a block diagram of the generator D To extend the code in the diagram, illustrating a method of forming extend the code by combining the FMC, FMD and the zero-crossing or fixing in accordance with the embodiment of the present invention in the communication system mdcr;

Fig. 20A is a block diagram illustrating the generator K-D - P-f extend code in accordance with the embodiment of the present invention in the communication system mdcr;

Fig. 20B is a chart illustrating the change of characters in units of time relative to the output thinner in Fig.20A;

Fig. 21A is a block diagram illustrating the generator K-D - P-f extend code in accordance with another embodiment of the present invention in the communication system mdcr;

Fig. 21B is a diagram illustrating the change of characters in units of time relative to the output thinner in Fig.21A;

Fig. 22 is a flowchart illustrating the procedure of forming the expanding sequence in accordance with the embodiment of the present invention in the communication system mdcr.

The following describes the preferred option with reference to the drawings. In the following description, well-known functions or constructions are not described in detail for purposes of clarity, the description of the entity histologies, that the initial state extends the code is in the first quadrant. Fig. 3-6 illustrate the basic state transitions, while Fig.3 refers to the zero crossing. Fig.4 - to-commit phase. Fig. 5 illustrates +/2-FMD and Fig.6 illustrates -/2-DFM. The above state transitions can be implemented in different ways.

Normal FMC expansion (here denoted for brevity, "K") is without memory; in other words, the transition in the current state can be carried out in each quadrant, regardless of the previous state. For example, assuming that the previous state corresponds to (1, 1) in the first quadrant, the present state may correspond to (1, 1) in the first quadrant, (-1, 1) in the second quadrant, (-1, -1) in the third quadrant, or (1, -1) in the fourth quadrant.

The phenomenon of zero-crossing occurs when expanding sequence generated by the generator extends the code, simultaneously change in sign, and the phenomenon of fixation that occurs when no change no sign of expanding sequences, causes deterioration of the characteristics of the MLA. Therefore, in the communication system mdcr is possible to improve the characteristic of the MHI due under the program. In one embodiment, the present invention provides a rst way, which in turn provides the FMC and FMD shifts in phase, in order to suppress the phenomenon of zero-crossing and fixing expanding sequence. After that, although the FMC may occur in any phase shift in any state, as shown in Fig.36, then is the phase shift FMD, which enables to prevent the zero-crossing and fixation. The second method is repeated configuration of the FMC, FMD the zero-crossing or fixation and the phase shift FMD for expanding sequence. Using the above two methods, it is possible to prevent the phenomenon of zero-crossing and fixing expanding sequence and to suppress continuous zero crossing or fixation.

First of all, description will be given first option of expanding sequence in accordance with a possible embodiment of the present invention.

Fig. 7 illustrates a method of forming expanding sequence based /2-FMD (referred to hereinafter for short "D") using the orthogonal code in the communication system mdcr.

iand the multiplier 212 multiplies the orthogonal code OS2on PSH code for generating code extends Cq. If the PN code is+1, -1, -1, +1, -1, and the initial values of the orthogonal codes OC1and OS2are both +1, then the multiplier 211 displays+1, -1, -1, +1, -1, and the multiplier 212 displays+1, +1, -1, -1, -1. Therefore, the combined output signals (CiCq) multipliers 211 and 212 become(+1, +1), (-1, +1), (-1, -1), (+1, -1), (-1, -1), so the transition state extends codes occurs in the first quadrant, second quadrant, third quadrant fourth quadrant and the third quadrant, causing every time /2 phase shift.

Fig. 8 illustrates a method of forming expanding sequence based on the FMC /2-FMD in the device extension of the spectrum for communication systems mdcr.

As shown in Fig.8, two thinner 222 thins PSHiand the multiplier 223 multiplies the orthogonal code OS2on the output signal 2-thinner 222. The multiplier 221 multiplies the orthogonal code OCion PSHqfor the formation of extending the code WITHiand the multiplier 224 multiplies the output signal of the multiplier 223 on PSHqfor the formation of the code extends Cq.

In Fig.9 shows Asano in Fig.8, the initial values of the orthogonal codes OC1and OS2is +1. In Fig.9 reference position 311 is PSHiand the reference position 312 denotes PSHioutput signal 2-thinner 222, 313 - output signal of the multiplier 223, 314 - PSHq, 315-expanding sequence Cifrom the output of the multiplier 221, 316 - expanding sequence Cqfrom the output of the multiplier 224 and 317 transitional state extends codes.

As shown in Fig. 8 and 9, the output signal of the multiplier 221 and the output signal of the multiplier 224 is formed which extends codesiand Cqrespectively. According to the views of codes 315, 316 and 317 that extends codes Ciand Cqbecome(+1, +1), (-1, +1), (-1, -1), (+1, -1), (+1, +1), (-1, +1) (+1, -1), (+1, +1) (1, -1), (-1, +1),(+1, -1),(+1, +1),(+1, +1),(-1, +1), (+1, +1), (+1, -1), so the state transitions extend codes correspond to the following: from the initial state in the first quadrant (To go), the second quadrant (D transition), the third quadrant (the transition), the fourth quadrant (D transition), the first quadrant (To go), the second quadrant (D transition), the fourth quadrant (To go), the first quadrant (D transition), the third quadrant (To go), the second quadrant (D transition), the fourth quadrant (To go), the first quadrant (grant ( D transition). That is, expanding the codes generated by the generator extends codes in Fig.8, are repeated transition between the FMC and /2-FMD, as shown by the reference position 317 in Fig.9.

In Fig. 10 shows the timing diagram of channel output orthogonal extender and an output signal generator extends codes implementing transitions To the On state. In Fig.10 reference position 411 refers to the channel output orthogonal extender, an input of a complex multiplier, and the reference position 412 refers to the widening codes from the output of the generator extends codes. As shown in Fig. 10 that extend code that performs the state transition of the FMC, is introduced from the generator extends codes at the moment of time when the channel data is entered in the complex multiplier based on the reference time.

In Fig. 11 is shown the timing diagram of channel output orthogonal extender and an output signal generator extends codes, performing transitions D-States. In Fig.11 reference position 421 refers to the channel output orthogonal extender, an input of a complex multiplier, and a reference Use code transition-state /2-FMD, is introduced from the generator extends codes at the moment of time when the channel data is entered in the complex multiplier based on the reference time.

Therefore, it is possible to implement the generator extends codes for the formation of D-To extend the sequence in Fig.11, using the same generator extends codes for the formation of K-D extender sequences in Fig. 10. The first method of implementation is delayed or ahead of channel data of one code element based on the reference time.

In Fig. 12 presents the timing diagram for the case when channel data ahead of one code element based on the reference time according to Fig.10. In Fig.12 reference position 431 refers to the output channel data ahead of one code element orthogonal extender, served on a complex multiplier, and the reference position 432 is to extend the codes from the output of the generator extends codes. As shown in Fig.12 that extend code that performs a state transition /2-FMD, is fed from the generator extends codes at the moment of time when the channel data is entered in the complex multiplier based on the reference the La case when channel data delayed by one code element based on the reference time according to Fig.10. In Fig. 13 reference position 441 represents the output channel data delayed by one code element of the orthogonal spreader, which are complex multiplier, and the reference position 442 is expanding codes, the output of the generator extends codes. As shown in Fig. 13 that extend code that performs a state transition /2-FMD, is fed from the generator extends codes at the moment of time when the channel data is entered in the complex multiplier, based on the reference time, thereby realizing the state transition D-K.

How can I determine from the preceding description, there is a possibility to implement the state transition D-K, using the generator extends codes, which performs the state transition K-D by the advance or delay of the channel data of one code element.

The second method of implementation is the realization of the state transition D by way of advance or delay of the output signal of generator K-D extender codes on one item code. Here is how to delay the output signal one code element, which can be relatively Les delay of one code element in accordance with a possible embodiment of the present invention.

As shown in Fig.14, the orthogonal extender 511, the receiving channel coded data, multiplies the encoded data at a specific orthogonal code for generating orthogonal extended channel data. Here Walsh code is used as an orthogonal code. Delay 515 on one code channel delay data of one code element. Generator 513 extends codes generates extend codes for extension channel data. Generator 513 extends codes can generate an expanding sequence, which is repeated D-To the phase shift, and also can form the expanding sequence, which is repeated K-D-POF-D Complex multiplier 512 complex multiplies channel data delayed by one code element, extends codes for the formation of extended transmission signals. Here you can use PN codes as extend codes. PN codes have a repetition rate equal to the repetition rate of the code elements, and can have values of +1 and -1. Block 514 low-pass filtering and modulation filters at the low frequency enhanced output signal of the complex multiplier 512 and then modulates the filtered signal d is about Fig.14, the delay of one code element 515 delay channel data of one code element for the feed channel data detained by one code element, the complex multiplier 512. Therefore, the generator 513 extends codes can perform or the state transition D - K or the state transition K-D-POF-D.

Fig.15 illustrates a circuit implementation of the state transition D-or transition States K-D-POF-D using a delay of one code element in accordance with another embodiment of the present invention.

As shown in Fig. 15, orthogonal extender 511 receives the channel coded data, multiplies the encoded data at a specific orthogonal code for generating orthogonal extended channel data. Here Walsh code is used as an orthogonal code. Generator 513 extends codes generates extend codes for extension channel data. Delay 516 on one element of the code delay extends codes with the generator output 513 of one code element. Complex multiplier 512 complex multiplies channel data to extend codes delayed by one code element for the formation of extended transmission signals. Here can be Oia code elements, and can have the values +1 and -1. In this embodiment, it is assumed that the PN codes have values +1 and -1. Block 514 low frequency and filtering and modulation filters at the low frequency enhanced output signal of the complex multiplier 512 and then modulates the filtered signals to obtain RF signals. As a modulator can be used CPM modulator.

According Fig.15, the delay 516 one code element delays the output signal generator 513 extends codes one code element for supplying extends codes detained for one code element, the complex multiplier 512. Therefore, it is possible to carry out the transition from state D To the or circuit state transition K-D-POF-D using a generator To D extend codes.

Generator 513 may also execute the state transition D To without delay of one code element, as shown in Fig.14 and 15. This can be realized by delaying by one code element output signal 2-thinner 812 in a conventional generator K-D extender codes shown in Fig.8.

Fig. 16 illustrates the generator D To extend codes in accordance with another embodiment of the present image which provides an output signal 2-thinner 612 on one item code. The delay time of the delay line 615 can be set to a specific time interval, expressed in code, other than one code element. The multiplier 613 multiplies the orthogonal code OS2on the output signal of the delay line 615. The multiplier 611 multiplies the orthogonal code OC1on PSHqfor the formation of the code extends Ciand the multiplier 614 multiplies the output signal of the multiplier 613 on PSH for the formation of the code extends Cq.

In Fig. 17 shows the timing diagram for the circuit of generation expansion sequences using the FMC /2-FMD in Fig.16. In Fig.17 it is assumed that the initial values of the orthogonal codes OC1and OC2is +1. In Fig. 17 reference position 711 is PSHi, 712 - PSHioutput signal 2-thinner 612, 713 - delayed PSHithe output signal of the delay line 615, 714 - output signal of the multiplier 613, which multiplies the orthogonal code OC2on the output signal of the delay line 615, 715 - PSHq, 716 - expanding the code Cifrom the output of the multiplier 611, which multiplies PSHqon orthogonal code OC1, 717 - expanding the code Cqfrom the output of the multiplier 614, which multiplies PSHqon output the real values of the orthogonal codes OC1and OS2are +1. As shown in Fig.16 and 17, the output signal of the multiplier 611 and the output signal of the multiplier 614 is formed which extends codes Ciand Cqrespectively. As shown by the reference position 718 that extends codesiand Cqfrom the outputs of the multipliers 611 and 614 have the form(+1, -1), (-1, -1), (-1, +1), (+1, +1), (+1, -1), (-1, -1), (+1, +1), (+1, -1), (-1, +1), (-1, -1), (+1, +1), (+1, -1), (+1, -1), (-1,-1), (+1, -1). Therefore, for the case in Fig.16 the state transitions extend codes (CiCq) are the following: from the initial state in the fourth quadrant (the transition), the third quadrant (D transition), the second quadrant (To go), the first quadrant (D transition), the fourth quadrant (the transition), the third quadrant (D transition), the first quadrant (the transition), the fourth quadrant (D transition), the second quadrant (To go), the third quadrant (D transition), the first quadrant (the transition), the fourth quadrant (the transition), the fourth quadrant (D transition), the third quadrant (To transfer) and the fourth quadrant (D transition). It should be noted that the state transitions are interleaved between /2-FMD and the FMC based on the reference time.

Fig. 18 illustrates a diagram of the reintroduction of state transitions of the FMC and /2-FMD by combining PN sequences used without the Aly And represent CPM signals, which are PSHiand PSHqoutput without phase shift and the signal D are /2-DFM signals.

As shown in Fig.18, the delay 811 delays preceding code extends Ciand the delay 821 delays extend previous codeq. The multiplier 815 multiplies PSHqcode -1 to invert PSHqcode. The multiplier 814 multiplies the preceding code extends Cqfrom the output of the delay line 821 on the output signal of the multiplier 815. The first selector 812, the host PSHicode as a first signal a and the output signal of the multiplier 814 as the second signal D, selects one of the input signals a and D under the control of the controller 831. The multiplier 824 multiplies the preceding code extends Cifrom the output of the delay line 811 on PSHqcode. The second selector 822, host PSHqcode as a first signal a and the output signal of the multiplier 824 as the second signal D, selects one of the input signals a and D under the control of the controller 831. Here the first signals And represent the CPM signals, which are PSHiand PSHqoutput without phase shift and the second signals D are /2-DFM signals.

In the process D in a certain order. You can also implement various ways of expanding the spectrum of frequencies having a lower MHI while minimizing the deterioration of the characteristics of the hospital has no facilities by combining the FMC and /2-DFM. In the embodiment according to Fig. 18 due to the fact that the input PSHiand PSHqdisplay without changes (i.e., without phase shift), first perform the CPM, to obtain values corresponding to one of the quadrants from the first to the fourth(+1, +1), (-1, +1), (-1, -1), (+1, -1), and then perform /2-FMD for the previous shift output signals to /2 phase. This can be implemented retry selection signals a and D using the first and second selectors 812 and 822. PSHiand PSHqcodes in Fig.18 may be the same as conventional PSH extend codes.

Fig.19 illustrates a method of forming a widening codes by combining the FMC /2-FMD and zero crossing or fixing in accordance with a possible embodiment of the present invention. In Fig.19 signals And represent the CPM signals, which are PSHiand PSHqoutput without phase shift, the signals b and D represent /2-DFM signals and the signals are PNUT signals.

As pouivet preceding code extends Cq. The multiplier 913 multiplies PSHithe code in the previous code extends Cifrom the output of the delay line 911. The multiplier 915 multiplies PSHqcode -1 to invert PSHqcode. The multiplier 914 multiplies the preceding code extends Cqthe output of the delay line 921 on the output signal of the multiplier 915. The first selector 912 accepts PSHicode as the first signal And the output signal of the multiplier 923 as the third signal and the output signal of multiplier 924 as the second and fourth signals b and D, selects one of the input signals a, b, C and D under the control of the controller 931. Here the first signals And represent the CPM signals, which are PSHiand PSHqoutput without phase shift, the second and fourth signals b and D represent /2-DFM signals and the third signals are PNUT signals.

During operation, the controller 931 controls the first and second selectors 912 and 922 for sequential selection in a specific order signals a, b, C and D. it is Also possible to carry out different ways of expansion with lower CHI while minimizing deterioration of the characteristics of the hospital has no facilities, by combining the FMC, KICKED, /2-FMD and FIXATION is carried out by the FMC-/2-DFM-PND--FMD (here denoted as K-D-N-D), the second method extension Fixation-/2-FMD, and in the third method of expansion is used PND-/2-DFM. In addition, it is also possible to use the extension technique, which is a combination of the above first, second and third ways of expansion. This method can be carried out, as described below.

Below is described the formation extends codes in accordance with a sequence of K-D-N-D on Fig.19. In this way due to the fact that the input same PSHiand PSHqused without phase shift, first perform the FMC for the issuance of values corresponding to one of the quadrants, from the first to the fourth(+1, +1), (-1, +1), (-1, -1), (+1 -1); then perform /2-FMD for the previous shift output signals to /2-DFM phase; after this exercise KICKED to output the same values as derived previously, or for changing the signs of both the previously derived values; and, finally, exercise /2-DFM. This is done retry selection signals a, b, C and using the first and second selectors 912 and 922. PSHiand PSHqcodes in Fig. 19 may be a conventional PSH extend codes.

The following describes the different transition States occurring in the circuit of Fig.19. the second selectors 912 and 922, and can be implemented PND-FMC transition alternation between the signal and using the first and second selectors 912 and 922. Here it is assumed that formed the same extends codes, the sequence of output extends codes differ, as in the cases of the FMC-KICKED and KICKED-FMC, i.e., when there is a delay in one code element. The transition will KICK-/2-FMD (or /2-DFM-PND) can be performed by alternating between the signals C and b (or signals b and C) using the first and second selectors 912 and 922; FMC-/2-DFM-PND-/2-FMD can be carried out by repetition of the law of selection signals a, b, C and D using the first and second selectors 912 and 922; /2-DFM-FMC-PND-/2-FMD can be carried out by repetition of the law of selection signals, a, C, and D using the first and second selectors 912 and 922; and FMC-PND-FMC-/2-FMD can be carried out by repetition of the law of selection signals a, C, a and b, using the first and second selectors 912 and 922.

Fig. 20A illustrates a method of forming an expansion B sequences according to the sequence of transitions K-D-N-D As shown in Fig. 20A, 4-thinner 1011 fourfold thins PSH1code and 4-thinner 1021 four thins is for a specific duration of the code element. Detailed description of the output signals of progresively will be given below.

Fig. 20B illustrates the change of characters in units of time relative to the decimation of Fig.20V reference position 1115 represents the result of a 4-thinning when PSH1equal to +1 in 4-thinner 1011 in Fig.20A, and the reference position 1117 represents the result of a 4-thinning when PSH2-1 in 4-thinner 1021 in Fig.20A.

The multiplier 1013 in Fig.20A multiplies the output signal of the multiplier 1012 on PSH3code to output code extends Ciand the multiplier 1023 multiplies the output signal of the multiplier 1022 on PSH3code to output code extends Cq. Considering operation of the circuit formation extends codes in Fig.20A, are formed PSH1and PSH2codes, denoted by the reference position 1111 and 1113 in Fig.20V, were subjected to thinning out progresively 1011 and 1021, as shown by the reference positions 1115 and 1117, and then are multiplied by orthogonal codes OC1and OS2in the multiplier 1012 and 1022. After that, the output signals of the multipliers 1012 and 1022 are multiplied by PSH3the code in the multiplier 1013 and 1023, there are formed extending codes Ciand Cq. As soon as PSH1and PSH2codes PLA 1011 and 1021, are multiplied by the corresponding orthogonal codes OC1and OC2in the multipliers respectively 1012 and 1022. At this point in the first code element is FMC. If it is assumed that the output signal for the previous time code exists in the first quadrant (+1, +1), then the output signal for the time of the second code element will occur in the second quadrant (-1, +1) or in the fourth quadrant (+1, -1), which corresponds to /2-DFM. The output signal for the time of the third code element occurs in the second quadrant (-1, +1) or in the fourth quadrant (+1, -1), due to the use of orthogonal codes and PSH3code/ which corresponds POF. During the fourth code element output signal occurs in the first quadrant (+1, +1) or the third quadrant (-1, -1), which corresponds to /2-DFM.

Fig. 21A illustrates another diagram of the formation extends codes in accordance with K-D-H-D.

As shown in Fig. 21A, the multiplier 1211 multiplies PSHicode is an orthogonal code OC1and the multiplier 1221 multiplies PSHicode is an orthogonal code OS2. Series-parallel (SP) Converter 1231 converts serial PSHqcode into parallel data, 2-thinner 1241 thins PSHqcode output PP of the Converter 1231 to output the even-numbered values PSHqcode.

Below are described output signals PP Converter 1231 and output signals 2-progresively 1241 and 1251 with reference to Fig.21B, which illustrates the change in character over time. In relation to the outputs 2-progresively 1241 and 1251 odd values PSHqcode change as shown by the reference position 1315 in Fig.21B. The multiplier 1212 in Fig.21A multiplies the output signal of the thinner 1241 on the output signal of the multiplier 1211 for the formation of the code extends Ciand the multiplier 1222 multiplies the output signal of the thinner 1251 on the output signal of the multiplier 1221 for forming extend code Cq. Although in the scheme of Fig.20A is used three PN code, the diagram in Fig.21A can perform the same function using only two PN code.

As shown in Fig.21A and 21B, the PN code is multiplied by the orthogonal codes OC1and OS2in the multipliers 1211 and 1221, respectively. PSHqcode after completing PP Converter 1231 and 2-progresively 1241 and 1251, is multiplied by the output signals of the multipliers 1211 and 1221 in the multipliers 1212 and 1222 to obtain at the outlet extends codes Ciand Cq. In the generator extends codes is implemented as PSS code in Fig.20A.

In Fig.22 presents a flowchart illustrating a method of preventing growth MHI not only when extending the code has zero-crossing KICKED, but when extending the code retains the same value (i.e., fixed). As shown in Fig.22, to prevent zero crossing and fixation extends codes PSHiand PSHqwhen experiencing PND, produce a shift extend code phase +/2 or -/2, otherwise the of VSiand PSHqexcreted unchanged. This method is a hybrid method that uses /2-FMD and FMC, and may exclude KICKED and commit.

As shown in Fig. 22, the values of PN codes are entered at step 1411, and values PSHiand PSHqcompared with previous values of Ciand Cqat step 1412. If CiPSHiand CqPSHqthen, the procedure proceeds to step 1413, in which the phase extender codes shifted by +/2. However, if any of the values PNiand PSHqequal to the corresponding previous values of Ciand Cqthe procedure proceeds to step 1415. If Ci=PSHiand Cq=PSHqat step 1415, the procedure proceeds to step 1414, where the phase extender codes to dvigatel Ciand Cqthe procedure proceeds to step 1416, where the value of PSHiissued as a constant Cia value PSHqissued as an unmodified Cq.

As described above, a new scheme of formation of the expanding sequence forms an expanding sequence, which performs repeated transitions between States /2-FMD and the CPM, to thereby reduce the MLA.

Although the invention has been shown and described with references to preferred options for its implementation, specialists in this field it is clear that can be made various changes in form and detail without changing the nature and scope of the invention defined by the claims.

1. Apparatus for forming extend codes for communication systems, multiple access, code-division multiplexing (mdcr), including the generator pseudotumour (PN) sequences for forming PNiand PSHqsequences; generator orthogonal codes for the formation of the first and second orthogonal codes, these generator orthogonal codes performs the state transitions of differential phase-shift keying (FMD) with UB>iand Cqby mixing PSHiand PSHqsequences with the first and second orthogonal codes, so that the current phase extends codes Ciand Cqalternately performs the state transitions of the quadrature phase manipulation of the FMC and FMD in relation to the previous phase extends codes Ciand Cq.

2. Apparatus for forming extend codes under item 1, characterized in that the generator extends codes includes a first multiplier for mixing PSHqsequence with the first orthogonal code for forming a second extender codeiand the first orthogonal code is a sequence of two code elements, consisting of +1, +1; thinner for two-thinning PSHisequence; a second multiplier for mixing twice thinned PSHithe sequence with the second orthogonal code on an atomic basis, with the second orthogonal code is a sequence of two code elements, consisting of +1, -1; and a third multiplier for mixing the output signal of the second multiplier with PSHqsequence on an atomic basis for the formation of aldeasa fact, which further comprises a delay line of one code element connected between the thinner and the second multiplier.

4. Apparatus for forming extend codes on p. 3, wherein if the preceding extends codesiand Cqtransition state of the FMC, which extends codes Ciand Cqskip the FMD status, and if the preceding extends codes Ciand Cqtransition state DFM, extend current codes Ciand Cqperform a state transition of the FMC.

5. Apparatus for forming extend codes on p. 4, characterized in that as the state transition of the FMC selected one of the States of the phase shift on /2 and zero crossing and fixation, as well as the state transition FMD selected shift state phase /2.

6. Apparatus for forming extend codes in the communication system mdcr, including the generator PN sequence for forming PNiand PSHqsequences; and the generator extends codes for formation extends codes Ciand Cqby mixing PSHiand PSHqsequences with previous who carried out the state transitions of the FMC and FMD in relation to the previous phase extends codes Ciand Cq.

7. Apparatus for forming extend codes on p. 6, characterized in that the generator extends codes includes a first delay line for delaying extend codeione code element; a second delay line for delaying code extends Cqone code element; a first multiplier for mixing the delayed code extends Cqwith inverted PSHqsequence; a second multiplier for mixing the delayed code extends Ciwith PSHqsequence; a first selector for alternately selecting PSHisequence and the output signal of the first multiplier for issuance code extends Ci; and a second selector for alternately selecting PSHqsequence and the output signal of the second multiplier for issuance code extends Cq.

8. Apparatus for forming extend codes under item 7, wherein if the preceding extends codes iand Cqcarried out the state transitions of the FMC, which extends codes Ciand Cqmake the transition States of FMD; and if the preceding extends codes was carried out by the state transition FMD, current russirussia codes on p. 8, characterized in that as the state transition of the FMC selected one of the States of the phase shift on /2 and zero crossing and fixation, as well as the state transition FMD selected state of the phase shift on /2..

10. Device for expanding the spectrum for communication systems mdcr, including orthogonal extender for orthogonal expansion of at least one channel signal; a first generator extends code for forming at least one first extending code; the generator of the second extender code, receiving at least one first extending code for generating at least one second extending code that performs the state transition FMD for the received at least one first extending the code of the previously generated at least one second extending code; and a complex multiplier for expanding at least one extended orthogonal channel signal using at least one of the second extending code.

11. Device for expanding the range under item 10, characterized in that the generator of the first extending code generates PSHiand PSHqcode serial the surface and generates a second extender codes Ciand Cqby mixing PSHiand PSHqcode sequences respectively with the first and second orthogonal codes, and the repeated state transitions of the FMC and FMD occur between the current generated by the second extends codes Ciand Cqand earlier formed the second extends codes Ciand Cq.

12. Device for expanding the range on p. 11, characterized in that the generator of the second extender code includes a first multiplier for mixing PSHqcode sequence with the first orthogonal code for element-by-element basis for the formation of the second code extends Ciand the first orthogonal code is a sequence of two code elements, consisting of +1, +1; thinner for two-thinning PSHisequence; a second multiplier for mixing twice thinned PSHicode sequence with a second orthogonal code on an atomic basis, with the second orthogonal code is a sequence of two code elements, consisting of +1, -1; and a third multiplier for mixing the output signal of the second multiplier with PSHqSS="ptx2">

13. Device for expanding the range under item 12, characterized in that it further comprises a delay line of one code element connected between the thinner and the second multiplier.

14. Device for expanding the range under item 10, characterized in that the generator of the first extending code generates PSHiand PSHqcode sequence; a second generator extends the code takes PSHiand PSHqcode sequence and generates extend codes, by state transitions FMD by mixing PSHiand PSHqcode sequences with the previously generated second extends codes Ciand Cqand PSHiand PSHqcode sequence and the generated second extends codes Ciand Cqconsistently selected for element-by-element basis for the formation of the second extender codes Ciand Cq.

15. Device for expanding the range under item 14, characterized in that the generator of the second extender code includes a first delay line for delaying the second code extends Cione code element; a second delay line for delaying the second code extends Cqsequence; a second multiplier for mixing the delayed second code extends Ciwith PSHqthe code sequence; and a first selector for alternately selecting PSHicode sequence and the output signal of the first multiplier for issuance code extends Ci; and a second selector for alternately selecting PSHqcode sequence and the output signal of the second multiplier for the issuance of the second extender codeq.

16. Device for expanding the spectrum for communication systems mdcr, including orthogonal extender for orthogonal expansion of at least one channel signal; a first generator extends code for forming at least one first extending code; the generator of the second extender code, receiving at least one first extending code for generating at least one second extending code that implements the state transitions for FMD received at least one first extending the code of the previously generated at least one second extending code; a delay line for delaying at least one of the second extending codengo channel signal using at least one of the second extending code.

17. Device for expanding the spectrum for communication systems mdcr, including orthogonal extender for orthogonal expansion of at least one channel signal; a delay line for delaying at least one of an orthogonal expansion of a signal on one code element; a first generator extends code for forming at least one first extending code; the generator of the second extender code, receiving at least one first extending code for forming at least one second extending code who is responsible for the state transitions for FMD received at least one first extending the code from the previously generated at least one second extending code; and a complex multiplier for expansion of the detainee at least one extended orthogonal channel signal using at least one of the second extending code.

18. The method of formation extends codes for communication systems mdcr, comprising the steps of forming first and second orthogonal codes to implement the state transitions FMD using PSHiand PSHqcode sequences with intervals MPsiand PSHqcode sequences with the first and second orthogonal codes, so that the current phase extends codes Ciand Cqalternately performs the state transition of the FMC and FMD in relation to the previous phase extends codes Ciand Cq.

19. The method of formation extends codes under item 18, characterized in that the step of forming extend codes includes the steps of mixing PSHqcode sequence with the first orthogonal code for forming a second extender codeiand the first orthogonal code is a sequence of two code elements, consisting of +1, +1; and two thinning PSHicode sequence, mixing twice thinned PSHiwith the second orthogonal code on an atomic basis, with the second orthogonal code is a sequence of two code elements, consisting of +1. -1, and mixing the mixed sequence with PNqthe code sequence on a per-item basis for the formation of the second code extends Cq.

20. The method of formation extends codes for communication systems mdcr, comprising the steps of forming PNUB> and Cqby mixing PSHiand PSHqcode sequences with the preceding extends codes Ciand Cqso the current phase extends codes Ciand Cqalternately performs the state transitions of the FMC and FMD in relation to the previous phase extends codes Ciand Cq.

21. The method of formation extends codes on p. 20, wherein the step of forming extend codes includes the steps of delays extend the code WITHiand extend the code WITHqone code element; mixing the delayed second code extends Cqwith inverted PSHqthe code sequence for the formation of the first mixed signal, and mixing the delayed second extender codeiwith PSHqcode sequence for forming a second mixed signal, and alternately selecting PSHicode sequence and the first mixed signal for issuing a second extender codeiand alternate choice PSHqsequence and the second mixed signal for issuing a second code extends Cq.

22. Method of spread spectrum for communication systems mdcr, DFM with PSHiand PSHqcode sequences with intervals of at least two code element; forming a widening codes Ciand Cqby mixing PSHiand PSHqcode sequences with the first and second orthogonal codes, so that the current phase extends codes Ciand Cqalternately performs the state transitions of the FMC and FMD in relation to the previous phase extends codes Ciand Cq; and expanding the range extended orthogonal channel signal by using a widening codes Ciand Cq.

23. Method of spread spectrum on p. 22, wherein the step of forming the codes Ciand Cqincludes the steps of mixing PSHqcode sequence with the first orthogonal code for element-by-element basis for the formation of the second code extends Ciand the first orthogonal code is a sequence of two code elements, consisting of +1, +1; double thinning PSHicode sequence, mixing twice thinned PSHiwith the second orthogonal code on an atomic basis, with the second orthogonal code is a sequence of two alemitu on element-by-element basis for the formation of the second extender codeq.

24. Method of spread spectrum for communication systems mdcr, comprising the steps of forming PNiand PSHqcode sequences, the formation extends codes Ciand Cqby mixing PSHiand PSHqcode sequences with the preceding extends codes Ciand Cqso the current phase extends codes alternately performs the state transitions of the FMC and FMD in relation to the previous phase extends codes Ciand Cq; and expansion of the extended orthogonal channel signal extender codes Ciand Cq.

25. The method of expansion by p. 24, characterized in that the formation extends codes includes the steps delay code extends Ciand extend the code Cqone code element; mixing the delayed second extender codeqc inverted PSHqthe code sequence for the formation of the first mixed signal, and mixing the delayed second extender codeiwith PSHqcode sequence for forming a second mixed signal, and alternately selecting PSHicode sequence and the first sleeveless and the second mixed signal for issuing a second extender codeq.

26. Method of spread spectrum for communication systems mdcr, comprising the steps of forming at least one first extending code; forming at least one second extending code to implement the state transitions FMD for at least one of the first extender code from a previously generated at least one second extending code; delay at least one of the second extending code of one code element; and the complex extension of at least one orthogonal enhanced signal detainees at least one second extending code.

27. Method of spread spectrum for communication systems mdcr, comprising the steps of orthogonal expansion of at least one channel signal; a delay of at least one orthogonal enhanced signal-to-one code element; forming at least one first extending code; forming at least one second extending code that implements the state transitions FMD for at least one of the first extender code from a previously generated at least one second extending code; and expansion of the detainee at Mercado.

 

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