基于CHASE译码思想的PCMA信号盲分离算法
|
摘要
在软输出逐幸存路径处理(SOVA-PSP)算法的基础上,提出了基于CHASE译码思想的载波成对复用多址(PCMA)信号的盲分离算法。该算法对SOVA-PSP软输出的结果进行可靠性排序,对于排序中可靠性较低的混合符号进行信号重构,通过重构信号和接收信号之间的欧式距离对比纠正其中的错误结果。仿真结果表明,所提算法与SOVA-PSP算法相比,性能有2 dB左右的增益。
On the basis of SOVA-PSP,a novel algorithm for blind separation of PCMA signal was presented based on CHASE decoding.The results of soft output of SOVA-PSP were sorted based on reliability in the algorithm,the mixed symbols that had low reliability in the sorted results were reconstructed.Compared the euclidian distance between reconstructed signal and received signal,the wrong results can be corrected.Simulation results show that compared with the SOVA-PSP algorithm,the novel algorithm can improve the gain of about 2 dB.
On the basis of SOVA-PSP,a novel algorithm for blind separation of PCMA signal was presented based on CHASE decoding.The results of soft output of SOVA-PSP were sorted based on reliability in the algorithm,the mixed symbols that had low reliability in the sorted results were reconstructed.Compared the euclidian distance between reconstructed signal and received signal,the wrong results can be corrected.Simulation results show that compared with the SOVA-PSP algorithm,the novel algorithm can improve the gain of about 2 dB.
引文
[1]DANKBERG M,MACK J,MILLER.Self-Interference Cancellations for Two-Party Relayed CommunicationfP].US:Patent 5596439.1997.1-21.
[2]DANKBERG M.Paired carrier multiple access(PCMA)for satellite communication[A].Pacific Telecommunications Conference[C].1998.787-791.
[3]MOWLAEE P,CHRISTENSEN M Q JENSEN S H.New results on single-channel speech separation using sinusoidal modeling[J].IEEE Trans on Audio Speech and Language Processing,2011,19(5):1265-1277.
[4]DEMIR C,SARAQLAR M,CEMGIL A T.Single-channel speechmusic separation for robust ASR with mixture models[J].IEEE Trans on Audio Speech and Language Processing,2013,21(4):725-736.
[5]TENGTRAIRAT N,GAO B,WOO W L,et al.Single-channel blind separation using pseudo-stereo mixture and complex 2-D histogram[J].IEEE Trans on Neural Networks and Learning Systems,2013,24(11):1722-1735.
[6]EMAD M,GRAIS,ERDOGAN H.Single channel speech-music separation using matching pursuit and spectral masks[A].IEEE 19th Signal Processing and Communications Applications Conference[C].2011.323-326.
[7]CHOU R,BOERS Y,GEIST M.Performance evaluation for particle filters[A].Information Fusion,Proceedings of the 14th International Conference[C].2011.1-7.
[8]WANG Z Y,LIU Z T,LIU W Q.Particle filter algorithm based on adaptive resampling strategy[A].International Conference on Electronic&Mechanical Engineering and Information Technology[C].2011.3138-3141.
[9]CHOEYCHUEN K,CHAMNONGTHAI K.Efficient particle filter using non-stationary gaussian based model[A],Electrical Engineering/Electronics,Computer,Telecommunications and Information Technology,8th International Conference[C].2011.468-471.
[10]TU S L,ZHENG H,GU N.Single-channel blind separation of two QPSK signals using per-survivor processing[A].IEEE Asia Pacific Conference on Circuits and Systems[C].2008.473-476.
[11]MANUEL A VAZQUEZ M J.A per-survivor processing receiver for MIMO transmission systems with one unknown channel order per output[J].IEEE Trans on Vehicular Technology,2011,60(9):4415-4426.
[12]SAFARI N,VAHLIN A,LUND S A.Low complexity implementation of per-survivor processing for carrier-phase tracking in uncertain environments[A].Radio and Wireless Symposium[C].2012.195-198.
[13]廖灿辉,涂世龙,万坚.基于迭代的同频混合信号单通道盲分离/译码算法[J].通信学报,2011,32(8):111-117.LIAO C H,TU S L,WAN J.Iteration algorithm on single-channel blind separation and decoding of co-frequency modulated signals[J].Journal on Communications,2011,32(8):111-117.
[14]HUANG Q H,WANG D M.Single-channel speech separation based on long-short frame associated harmonic model[J].Digital Signal Processing,2011,21(4):497-507.
[15]GAO B,WOO W L,DLAY S S.Unsupervised single-channel separation of nonstationary signals using gammatone filterbank and itakura-saito nonnegative matrix two-dimensional factorizations[J].IEEE Trans on Circuits and Systems,2013,60(3):662-675.
[16]EMAD M,GRAIS E H.Spectre-temporal post-smoothing in NMF based single-channel source separation[A].20th European Signal Processing Conference[C].2012.584-588.
[17]廖灿辉,涂世龙,万坚.抗频偏的突发GMSK混合信号单通道盲分离算法[J].通信学报,2013,34(5):89-94.LIAO C H,TU S L,WAN J.Anti-frequency-offset algorithm on single-channel blind separation of burst GMSK mixed signals[J].Journal on Communications,2013,34(5):89-94.
[18]ZHANG D L,XU Y Q,ZHANG J,et al.Blind separation of the single-channel mixed signal based on BICM-ID[A].Computer Science and Automation Engineering,IEEE International Conference[C].2012.194-198.
[19]CHASE D.A class of algorithms for decoding block codes with channel measurement information[J].IEEE Trans Information Theory,2000,18(1):170-182.
[20]HAGENAUER J,HOEHER P.A Viterbi decoding algorithm with soft-decision outputs and its applicaions[A].IEEE Global Conference on Communications[C].1989.1680-1686.
[2]DANKBERG M.Paired carrier multiple access(PCMA)for satellite communication[A].Pacific Telecommunications Conference[C].1998.787-791.
[3]MOWLAEE P,CHRISTENSEN M Q JENSEN S H.New results on single-channel speech separation using sinusoidal modeling[J].IEEE Trans on Audio Speech and Language Processing,2011,19(5):1265-1277.
[4]DEMIR C,SARAQLAR M,CEMGIL A T.Single-channel speechmusic separation for robust ASR with mixture models[J].IEEE Trans on Audio Speech and Language Processing,2013,21(4):725-736.
[5]TENGTRAIRAT N,GAO B,WOO W L,et al.Single-channel blind separation using pseudo-stereo mixture and complex 2-D histogram[J].IEEE Trans on Neural Networks and Learning Systems,2013,24(11):1722-1735.
[6]EMAD M,GRAIS,ERDOGAN H.Single channel speech-music separation using matching pursuit and spectral masks[A].IEEE 19th Signal Processing and Communications Applications Conference[C].2011.323-326.
[7]CHOU R,BOERS Y,GEIST M.Performance evaluation for particle filters[A].Information Fusion,Proceedings of the 14th International Conference[C].2011.1-7.
[8]WANG Z Y,LIU Z T,LIU W Q.Particle filter algorithm based on adaptive resampling strategy[A].International Conference on Electronic&Mechanical Engineering and Information Technology[C].2011.3138-3141.
[9]CHOEYCHUEN K,CHAMNONGTHAI K.Efficient particle filter using non-stationary gaussian based model[A],Electrical Engineering/Electronics,Computer,Telecommunications and Information Technology,8th International Conference[C].2011.468-471.
[10]TU S L,ZHENG H,GU N.Single-channel blind separation of two QPSK signals using per-survivor processing[A].IEEE Asia Pacific Conference on Circuits and Systems[C].2008.473-476.
[11]MANUEL A VAZQUEZ M J.A per-survivor processing receiver for MIMO transmission systems with one unknown channel order per output[J].IEEE Trans on Vehicular Technology,2011,60(9):4415-4426.
[12]SAFARI N,VAHLIN A,LUND S A.Low complexity implementation of per-survivor processing for carrier-phase tracking in uncertain environments[A].Radio and Wireless Symposium[C].2012.195-198.
[13]廖灿辉,涂世龙,万坚.基于迭代的同频混合信号单通道盲分离/译码算法[J].通信学报,2011,32(8):111-117.LIAO C H,TU S L,WAN J.Iteration algorithm on single-channel blind separation and decoding of co-frequency modulated signals[J].Journal on Communications,2011,32(8):111-117.
[14]HUANG Q H,WANG D M.Single-channel speech separation based on long-short frame associated harmonic model[J].Digital Signal Processing,2011,21(4):497-507.
[15]GAO B,WOO W L,DLAY S S.Unsupervised single-channel separation of nonstationary signals using gammatone filterbank and itakura-saito nonnegative matrix two-dimensional factorizations[J].IEEE Trans on Circuits and Systems,2013,60(3):662-675.
[16]EMAD M,GRAIS E H.Spectre-temporal post-smoothing in NMF based single-channel source separation[A].20th European Signal Processing Conference[C].2012.584-588.
[17]廖灿辉,涂世龙,万坚.抗频偏的突发GMSK混合信号单通道盲分离算法[J].通信学报,2013,34(5):89-94.LIAO C H,TU S L,WAN J.Anti-frequency-offset algorithm on single-channel blind separation of burst GMSK mixed signals[J].Journal on Communications,2013,34(5):89-94.
[18]ZHANG D L,XU Y Q,ZHANG J,et al.Blind separation of the single-channel mixed signal based on BICM-ID[A].Computer Science and Automation Engineering,IEEE International Conference[C].2012.194-198.
[19]CHASE D.A class of algorithms for decoding block codes with channel measurement information[J].IEEE Trans Information Theory,2000,18(1):170-182.
[20]HAGENAUER J,HOEHER P.A Viterbi decoding algorithm with soft-decision outputs and its applicaions[A].IEEE Global Conference on Communications[C].1989.1680-1686.