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Volume 31 Issue 9
Dec.  2010
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Tu Shi-long, Chen Yue-xin, Zheng Hui. Exploiting Error-control Codes in Single-channel Blind Separation of Co-frequency Modulated Signals[J]. Journal of Electronics & Information Technology, 2009, 31(9): 2113-2117. doi: 10.3724/SP.J.1146.2008.01051
Citation: Tu Shi-long, Chen Yue-xin, Zheng Hui. Exploiting Error-control Codes in Single-channel Blind Separation of Co-frequency Modulated Signals[J]. Journal of Electronics & Information Technology, 2009, 31(9): 2113-2117. doi: 10.3724/SP.J.1146.2008.01051

Exploiting Error-control Codes in Single-channel Blind Separation of Co-frequency Modulated Signals

doi: 10.3724/SP.J.1146.2008.01051
  • Received Date: 2008-08-28
  • Rev Recd Date: 2009-06-08
  • Publish Date: 2009-09-19
  • A basic model is established for mixtures of two co-frequency modulated signals with error-control codes, then an M-PSP based algorithm is proposed to exploit the error-control codes in its single-channel blind separation, with special emphasis on the construction of state trellis, the evaluation of branch metric and the tracking of channel responses. Simulation results show that the proposed algorithm is superior to the algorithms which bypass the error-control codes. For BPSK signals with rate-1/2 convolutional codes, a gain of about 2 dB in signal-noise ratio can be obtained at a bit error rate of 10-4.
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  • Haykin S. Unsupervised Adaptive Filtering.[J].Volume 1: BlindSource Separation[M]. USA: John Wiley Sons Inc.2000,:-[2]Gao P, Chang E C, and Wyse L. Blind separation of fetalECG from single mixture using SVD and ICA[C]. Proc. ofICICS-PCM, Singapore, Dec. 15-18, 2003, 3: 1418-1422.[3]Blumensath T and Davies M. Shift-invariant sparse codingfor single channel blind source separation[C]. SPARS'05,Rennes, France, Nov. 2005: 75-78.[4]Jang G J and Lee T W. A maximum likelihood approach tosingle-channel source separation[J]. Journal of MachineLearning Research, 2003, 4(7-8): 1365-1392.[5]Benaroya L, Bimbot F, and Gribonval R. Audio sourceseparation with a single sensor[J].IEEE Transactions onSpeech and Audio Processing.2006, 14(1):191-199[6]Gidirhar K, Shynk J J, Mathur A, Chari S, and Gooch R P.Nonlinear techniques for the joint estimation of co-channelsignals[J].IEEE Transactions on Communication.1997,45(4):473-484[7]Warner E S and Proudler I K. Single-channel blind signalseparation of filtered MPSK signals[J].IEE ProceedingsRadar, Sonar and Navigation.2003, 150(6):396-402[8]Pedzisz M and Mansour A. A simple idea to separateconvolutive mixture in an undetermined scenario[C]. 14thESSANN, Bruges, Belgium, April 26-28, 2006: 365-370.[9]Heidari S and Nikias C I. Co-channel interference mitigationin the time-scale domain: the CIMTS algorithm[J].IEEETransactions on Signal Processing.1996, 44(9):2151-2162[10]Liu K, Li H, Dai X, and Xu X. Single channel blindseparation of cofrequency MPSK signals[C]. Proc.Communication, Internet, and Information Technology, St.Thomas, USA, Nov. 29-Dec. 1, 2006: 42-46.[11]Tu Shi-long.[J].Chen Shao-he, Zheng Hui, and Wan Jian.Particle filtering based single-channel blind separation ofco-frequency MPSK signals[C]. Proc. ISPACS07, Xiamen,China, Nov. 28-Dec.2007,1:-[12]陈绍贺, 万坚, 涂世龙, 郑辉. PCMA 系统中干扰信号时延估计新算法[J]. 系统与仿真学报, 2008, 20(21): 5774-5777.Chen Shao-he, Wan Jian, Tu Shi-long, and Zheng Hui. Novelalgorithm of interference time delay estimation in PCMAsystem[J]. Journal of System Simulation, 2008, 20(21):5774-5777.[13]Tu Shi-long, Zheng Hui, and Gu Na. Single-channel blindseparation of two QPSK signals using per-survivorprocessing[C]. IEEE Asia Pacific Conference on Circuits andSystems, Macao, China, Nov. 30-Dec. 3, 2008: 473-476.[14]Tu Shi-long.[J].Chen Shao-he, Zheng Hui, and Wan Jian. On theperformance of single-channel blind separation of twoco-frequency MPSK signals. Proc. TENCON07, Taibei,China, Oct. 30-Nov.2007,2:-[15]Raheli R, Polydoros A, and Tzou Ching-Kae. Per-survivorprocessing: A general approach to MLSE in uncertainenvironments[J].IEEE Transactions on Communication.1995,43(2/3/4):354-364
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