The method of receiving multi-beam broadband signal and device for its implementation

 

The invention relates to the field of radio and can be used in the receiving device, for example, in the communication system with code division multiplexing. The invention allows to compensate for the interfering influence of information flow signals rays that are used for other subscriber stations, to suppress the interfering influence of information flow signals rays on the pilot symbols of signals from other rays, to consider the impact on the received signal of the communication channel, devices, transmission and reception and to avoid significant errors in the estimation of the mutual influence of the signals of information flow signal beams at each other and influence information flows of signals rays on the pilot symbols of signals from other rays due to smoothing (filtering) generated estimates of the signal of each information stream of each beam. The technical result is to increase the noise immunity and quality of received data in a communication system. 2 C. and 12 C.p. f-crystals, 10 ill.

Description text in facsimile form (see graphic part).

Claims

1. The method of wideband multipath signal at the subscriber station, in which Sokov information symbols, J of which are given subscriber stations, which consists in the fact that search signals rays form of assessing the complex envelope of the pilot symbols detected signals rays, calculating the correlation of the detected signals rays with the SRP, the corresponding temporary regulations, the pilot signal of these rays form of assessing the complex envelope of information symbols detected signals rays generated estimates of the complex envelope of the pilot symbols detected signals rays form evaluation of pilot signals detected rays form the signals rays, purified from the interfering influence of pilot signals from other rays, subtracting from the signal of each beam evaluation of the pilot signals of all other rays form of the correlation responses of information symbols J flows for each of the detected beam, calculating the correlation of the signal beam, free from the interfering influence of pilot signals rays, with a SRP of information symbols corresponding flow signal beam form soft decision information symbols J flows for each of the detected beam, multiply the generated correlation feedback information symbols of the signal beam on the complex conjugate of complex estimation is rmation characters of each of the J streams, summing over all the rays of soft decisions corresponding information symbol streams rays, characterized in that the detected signals rays without interfering influence of pilot signals from other rays, search streams of information symbols intended for other subscriber stations, the form of the correlation responses of the information symbol streams intended for other subscriber stations, calculating the correlation of the signal beam, free from the interfering influence of pilot signals from other rays, with a SRP of information symbols corresponding threads of the signal beam generated correlation responses of information symbols To the threads of all rays, where K is the number of threads intended for this and other subscriber stations, J of which are intended for the subscriber station, and the remaining K-J flows - other subscriber stations, where K is greater or equal to J, and evaluation of complex envelopes of the pilot symbol signal beams are grouped in blocks of intervals of duration T and remember, for each block in the form of soft decision information symbols flows of signals rays intended for other subscriber stations, multiply the correlation feedback information is exnay envelope corresponding information symbols signal beams, form a combined soft-decision information symbols flows of signals rays intended for other subscriber stations, summing over all rays of soft decisions corresponding information symbol streams rays, for each block in revised form soft decision information symbols J threads devoted to this subscriber stations, in P stages by suppressing the interfering effect of signals of rays at each other, with each stage form a hard decision information symbols To a thread block, and the first step is formed by the combined soft decision information symbols flows in subsequent stages, the combined soft decision information symbols threads of the previous stage, form evaluation of the signal of each information stream of each beam on the unit interval, formed using the hard decision information symbols and the generated estimate of the complex envelope of these information symbols signal beam, perform the smoothing of the generated estimates of the signal of each information stream of each beam on the unit interval, form the estimate of the interfering influence on the information symbols of each stream every the Ala every thread of every other beam, form the estimate of the interfering influence on the information symbols of each stream of each beam unit from each information stream block using assessment interfering influence on the information symbols flux beam block from each information stream of each of the other beam block, form the estimate of the interfering influence on the information symbols of each stream of each beam unit, using assessment interfering influence on the information symbols flux beam block from each information stream block form the estimate of the interfering influence on the pilot symbols of each beam unit from each information stream of each of the other beam of the unit, using the smoothed estimate of the signal of each information stream of each of the other beam, form the estimate of the interfering influence on the pilot symbols of each beam unit from each information stream block using assessment interfering influence on the pilot symbols beam block from each information stream of each of the other beam block, form the estimate of the interfering influence on the pilot symbols of each beam unit, using assessment interfering influence on the pilot symbols beam block from each information stream block form an updated assessment of the complex envelope in the envelope of the pilot symbol signals rays of the block in the current stage, form revised correlation feedback information of all detected symbols To the threads of each beam current stage, form soft decision information symbols To the threads of each beam of the block in the current stage, multiply the adjusted correlation feedback information symbols flows rays of the block in the current stage on refined complex conjugate of assessing the complex envelope of the respective information symbols signal beam current stage, form a combined soft-decision information symbols To the threads of the block in the current stage, summing the soft decision information symbols To the threads of each beam of the block in the current stage, formed the combined soft-decision information symbols J threads devoted to this subscriber stations, each information block of the P-th stage are refined soft decision information symbols J flows and output values.

2. The method according to p. 1, characterized in that when searching for streams of information symbols intended for other subscriber stations, for each beam form of the correlation responses of the information symbol streams intended for other subscriber stations, computing Smolov, for each beam form soft decision information symbol streams intended for other subscriber stations by multiplying the generated correlation feedback information symbol streams intended for other subscriber stations, a complex conjugate of the evaluation of complex envelopes of the respective characters, form soft decision information symbol streams intended for other subscriber stations, summarize the modules soft decision information symbol streams intended for other subscriber stations on a comparison of the sum with a predetermined threshold to decide about the presence or absence of information flow available to other subscriber stations in a received multipath signal.

3. The method according to p. 1, characterized in that when forming the hard decision information symbols To a thread block is additionally used in the first evaluation phase of the complex envelope of information symbols signal rays of the block, at the subsequent stages - an updated assessment of the complex envelope of information symbols signal beams of the previous stage.

4. The method according to p. 1, characterized in that the signal of each thread is a, formed a hard decision information symbol and the generated estimate of the complex envelope of this information symbol signal beam on the interval length of each information symbol block.

5. The method according to p. 1, characterized in that the smoothing of the generated estimates of the signal of each information stream of each beam on the interval block is performed by cubic interpolation.

6. The method according to p. 1, characterized in that the estimation of the interfering influence on the information symbols of each stream of each beam unit from each information stream of each of the other beam block is formed by multiplying the SRP information symbols flows rays on the smoothed estimate of the signal to every thread of every other beam.

7. The method according to p. 1, characterized in that the estimation of the interfering influence on the information symbols of each stream of each beam unit from each information stream block is formed by summing the estimates of the interfering influence on the information symbols flux beam block from each information stream of each of the other beam block.

8. The method according to p. 1, characterized in that the estimation of the interfering influence on the information symbols of each stream of each beam unit is about information flow block.

9. The method according to p. 1, characterized in that the estimation of the interfering influence on the pilot symbols of each beam unit from each information stream of each of the other beam block is formed by multiplying the SRP pilot symbols rays on the smoothed estimate of the signal of each information stream of each of the other beam.

10. The method according to p. 1, characterized in that the estimation of the interfering influence on the pilot symbols of each beam unit from each information stream block is formed by summing the estimates of the interfering influence on the pilot symbols beam block from each information stream of each of the other beam block.

11. The method according to p. 1, characterized in that the estimation of the interfering influence on the pilot symbols of each beam unit is formed by summing the estimates of the interfering influence on the pilot symbols beam block from each information stream block.

12. The method according to p. 1, characterized in that the corrected estimates of the complex envelope of the pilot symbol signals rays of the block in the current stage is formed by subtracting the estimation of the interfering influence on the pilot symbols rays block from estimates of the complex envelope of the pilot symbol signals rays of the block.

13. The method according to p. 1, characterized in that the adjusted correlation responses of information symbols is Ola flux beam unit of the correlation response information symbol stream signal beam block.

14. The device of wideband multipath signal containing a receiver for signals rays, the selector signals rays, the generator of pseudorandom sequences gpsa, L vychitala the interfering influence of the pilot signal of the beam, L blocks of data signal beam, L blocks evaluation of the pilot signal beam, where L corresponds to the number of detected rays, shaper interfering influence of pilot signals rays, the control unit JL multiplier products that form soft decision J information symbols flows L ray, and J adders, where J corresponds to the number of information flows, designed this subscriber station, the first inputs of the receiver for signals rays and the selector signal beams are combined, forming the input of the second input receiver for signals rays and the selector signal beams are connected respectively with the first and second outputs of the control unit that generates the first output control signal search, and the second output control signal by dividing the input signal by the signal beams, the third receiver input search signal beams, the first inputs of L blocks of data of the signal beam and the first inputs units estimates the pilot signal is item output control signal copies SRP, the first control unit is connected to the output of the receiver for signals rays, each of the L outputs of the selector signal beams connected to the first input of the corresponding vicites the interfering influence of the pilot signal beam, the second inputs L vychitala the interfering influence of pilot signals of the beams are connected to the outputs of the shaper interfering influence of pilot signals rays, the output of each of the L vychitala the interfering influence of the pilot signal beam is connected to a second input of the corresponding data processing unit of the signal beam, the first output of each data processing unit of the signal beam is connected to a second input of the corresponding evaluation unit, the pilot-signal beam the outputs of the L blocks evaluation of the pilot signal beam is connected with the corresponding first inputs of the former (the interfering influence of pilot signals rays, a second input connected to the fourth output control unit that generates the fourth output signal to control the formation of the interfering influence of pilot signals rays, characterized in that the input search block of information symbols of the data streams, block the formation of the interfering effect of signals of rays at each other, the memory block L block formation refined correlation of responses is formirovaniya combined soft decision information flows, in which additionally introduced (K-J)L multiplier products that form soft decision information symbols K-J flows L rays, and K-J adders, where K corresponds to the number of information flows, designed this and other subscriber stations, the first inputsL multiplier products are the first inputs of the processing unit combined soft decision information flows, which are connected to the first outputs of the corresponding L blocks the formation of the adjusted correlation responses of the symbols of the signal beams, the second inputs KL multiplier products are the second inputs of the processing unit combined soft decision information flows, which are connected with the second outputs corresponding L blocks the formation of the adjusted correlation responses of the symbols of the signal beams, outputs KL multiplier products are connected with the corresponding inputs To the adders so that the outputs of the multiplier products corresponding to the rays k flow, connected with L the k inputs of the adder, where k takes values from 1 to K, the outputs of the adders are the outputs of the shaping unit combined soft decision information flows, kotnik and block the formation of the interfering effect of signals of the beams to each other are connected to the outputs of the gpsa, the second input of the search block of information symbols of the data streams connected to the outputs of the L vychitala the interfering influence of the pilot signal beam, the third input of the search block of information symbols of the data streams and the first inputs of the memory block connected to the first outputs of the L blocks of data of the signal beam, the fourth input of the search block of information symbols of the data streams connected to the fifth output control unit that generates the fifth output signal to control the retrieval of information symbols of the data streams, the output of a search block of information symbols of the data streams is connected with the second input of the control unit, the sixth output control unit forming on the sixth output signal to control a write to memory, connected with the second input of the memory block, the third input of which is connected to the second outputs of the L blocks of data of the signal beam, the first outputs of the memory block are connected to first inputs of corresponding L blocks the formation of the adjusted correlation responses of the symbols of the signal beam, the second inputs of which are connected with the corresponding second outputs of the memory block, the third inputs of L blocks the formation of the adjusted correlation responses of the symbols of the signal beam is connected to the output of the Blode control unit, forming on the seventh output signal to control the formation of the interfering effect of signals of rays at each other, the third input of the block forming the interfering effect of signals of the beams at each other combined with the second inputs of the processing unit combined soft decision information flows, the fourth input of the unit forming the interfering effect of signals of the beams to each other is connected to the first output switch, the second input connected to the eighth output control unit forming on the eighth output signal to control switching of the adjusted combined soft decision information symbols To flow, the second outputs of the switch are the outputs of the device.

 

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