基于迭代的同频混合信号单通道盲分离/译码算法

doi:1000-436X(2011)08-0111-07

Abstract

Abstract:

An algorithm was proposed to exploit the codes in iterative single-channel blind separation and decoding of two co-frequency modulated signals with long-constraint channel codes.The output log-likelihood ratio (LLR) values of the decoder were used as a prior LLR fed back to the separator to improve the separation performance.Special emphases were laid on soft input soft output blind separation,maximum a posteriori (MAP) decoding and LLR interaction between separator and decoder.Simulation results show that th proposed algorithm can make a significant improvement in performance over the algorithms without iterations.For BPSK signals with (2,1,6) convolutional codes and random interleaving,a gain of about 2dB in signal-noise ratio can be obtained after two iterations.

Key words: signal processing, single-channel blind separation, PSP, MAP decoding

Can-hui LIAO,Shi-long TU,Jian WAN. Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals[J]. Journal on Communications, 2011, 32(8): 111-117.

Figures/Tables 5

References 12

[1]	彭耿, 黄知涛, 姜文利 ,等. 单通道盲信号分离研究进展与展望[J]. 中国电子科学研究院学报, 2009,4(3): 268-277. PENG G , HUANG Z T , JIANG W L ,et al. Development and perspective of single channel blind signal separation[J]. Journal of China Academy of Electronics and Information, 2009,4(3): 268-277.
[2]	LI Y Q , AMARI S , CICHOCKI A ,et al. Undetermined blind source separation based on sparse representation[J]. IEEE Trans on Signal Processing, 2006,54(2): 423-437.
[3]	HEIDARI S , NIKIAS C I . Co-channel interference mitigation in the time-scale domain:the CIMTS algorithm[J]. IEEE Trans on S P, 1996,44(9): 2151-2162.
[4]	BRANDT-PEARCE M . Signal separation using fractional sampling in multiuser communications[J]. IEEE Trans on Commun, 2000,48(2): 242-251.
[5]	LIU K , LI H , DAI X ,et al. Single channel blind separation of cofrequency MPSK signals[A]. Proc Commu,Internet,and Inf Technology (CIIT 2006)[C]. USA, 2006. 42-46.
[6]	TU S L , CHEN S H , ZHENG H ,et al. Particle filtering based signal channel blind separation of co-frequency MPSK signals[A]. Proc ISPACS’07[C]. Xiamen,China, 2007. 89-92.
[7]	TU S L , ZHENG H , GU N . single-channel blind separation of two QPSK signals using per-survivor processing[A]. APCCAS08[C]. Macao,China, 2008. 473-476.
[8]	TU S L , CHEN S H , ZHENG H ,et al. On the performance of single-channel blind separation of two co-frequency MPSK signals[A]. Proc TENCON’07[C]. Taibei,China, 2007. 58-61.
[9]	LIAO C H , TU S L , ZHOU S D . Particle filtering algorithms for single-channel blind separation of convolutionally coded signals[A]. ISPACS’09[C]. Kanazawa,Japan, 2009. 623-626.
[10]	涂世龙, 陈越新, 郑辉 . 利用纠错编码的同频调制混合信号单通道盲分离[J]. 电子与信息学报, 2009,31(9): 2113-2117. TU S L , CHEN Y X , ZHENG H . 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.
[11]	LING G , WU X F , YI X X . On SOVA for nonbinary codes[J]. IEEE Commun Lett, 1999,3(12): 335-337.
[12]	崔荣涛, 李辉, 万坚 ,等. 一种基于过采样的单通道MPSK信号盲分离算法[J]. 电子与信息学报, 2009,31(3): 566-569. CUI R T , LI H , WAN J ,et al. An over-sampling based separation algorithm of single channel MPSK signals[J]. Journal of Electronics ＆Information Technology, 2009,31(3): 566-569.

Metrics

Recommended 0

No Suggested Reading articles found!

[1]	Yun LIN, Huaitao XU, Sen WANG, Sicheng ZHANG, Long ZHUANG. Objective assessment of communication speech interference effect based on feature fusion [J]. Journal on Communications, 2023, 44(3): 105-116.
[2]	Feng ZHOU, Baosheng ZHANG, Wenbo ZHANG. Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal [J]. Journal on Communications, 2022, 43(8): 100-108.
[3]	Xianbin YU, Zhidong LYU, Lianyi LI, Muhammad Idrees Nazar, Lu ZHANG. Waveform design and signal processing for terahertz integrated sensing and communication [J]. Journal on Communications, 2022, 43(2): 76-88.
[4]	Jun LIU, Jian WANG. Research progress of optical signal processing with orbital angular momentum [J]. Journal on Communications, 2021, 42(11): 217-232.
[5]	Zhe CHEN,Yuqi HU,Shiqing TIAN,Huimin LU,Lizhong XU. Non-stationary signal combined analysis based fault diagnosis method [J]. Journal on Communications, 2020, 41(5): 187-195.
[6]	Wei WANG,Ming ZHANG,Bobin YAO,Qinye YIN,Pengcheng MU. Computationally efficient direction-of-arrival estimation of non-circular signal based on subspace rotation technique [J]. Journal on Communications, 2020, 41(11): 198-205.
[7]	Xian ZHOU,Tianyu GAO,Jiahao HUO,Xiaojie SHEN,Dongxu LU,Wei HUANGFU,Jiajing TU,Keping LONG. Research on IQ imbalance estimation algorithm based on GSOP [J]. Journal on Communications, 2018, 39(9): 129-134.
[8]	Wang-han LYU,Hua-li WANG,Shan-xiang MU,Feng LIU. Joint frequency and DOA estimation using spatial-temporal co-prime sampling with off-grid sources [J]. Journal on Communications, 2017, 38(2): 125-131.
[9]	Wei WANG,Qin-ye YIN,Peng-cheng MU. Inter-carrier interference cancellation using spatial characteristics for high-mobility OFDM communication systems [J]. Journal on Communications, 2015, 36(8): 76-82.
[10]	Yong YANG,Dong-ling ZHANG,Hua PENG,Shi-long TU. Single-channel blind separation of co-frequency modulated signals based on Gibbs sampler [J]. Journal on Communications, 2015, 36(4): 157-162.
[11]	Jian DU,Ke-xian GONG,Hua PENG. Algorithm for blind separation of PCMA based on CHASE decoding [J]. Journal on Communications, 2015, 36(3): 202-207.
[12]	Can-hui LIAO,Shi-long TU,Jian WAN. Anti-frequency-offset algorithm on single-channel blind separation of burst GMSK mixed signals [J]. Journal on Communications, 2013, 34(5): 88-95.
[13]	. Anti-frequency-offset algorithm on single-channel blind separation of burst GMSK mixed signals [J]. Journal on Communications, 2013, 34(5): 10-95.
[14]	. Blind adaptive matching pursuit algorithm for signal reconstruction based on sparsity trial and error [J]. Journal on Communications, 2013, 34(4): 22-186.
[15]	Wen-biao TIAN,Zheng FU,Guo-sheng RUI. Blind adaptive matching pursuit algorithm for signal reconstruction based on sparsity trial and error [J]. Journal on Communications, 2013, 34(4): 180-186.

Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 5

References 12

Related Articles 15

Metrics

Recommended 0