基于软信息联合修正的非对称PCMA盲分离算法

doi:10.11959/j.issn.1000-436x.2017044

Abstract

Abstract:

On the basis of a blind separation structure with low complexity,an efficient blind separation algorithm based on soft information joint correction was proposed for asymmetric PCMA to improve the demodulation performance of strong and weak signals.By utilizing the demodulation mutual influence between the strong and weak signals,this algorithm tried to correct the receiving symbols of strong signal with high error probability.Comparing the symbol constellation quality (soft information) of signals before and after correction,it can be decided whether the hard decision values of strong and weak signals need to be modified,which efficiently reduce the demodulation error rate of strong and weak signals.The simulation results show that,the demodulation error rate of strong and weak signals can be reduced by nearly two orders of magnitude after joint correction especially when the signal to noise ratio of strong signal is higher than 17 dB,and the computational complexity of this algorithm is lower than that of the conventional reconstruction cancellation algorithm.

Key words: asymmetric PCMA, blind separation, soft information, joint correction

CLC Number:

TN911.7

Qiang HUANG,Hua PENG,Tian-yun LI,Ke-xian GONG. Blind separation of asymmetric PCMA signal based on soft information joint correction[J]. Journal on Communications, 2017, 38(4): 178-189.

Figures/Tables 11

算法	复数乘法次数
本文算法修正前	$M L (\frac{2 M P_{i}}{P_{s}} + 1)$
本文算法修正后	$M L (\frac{2 M P_{i}}{P_{s}} + 1) + L_{E} (5 + 6 N)$
重构抵消算法	L (2MP_s+1)+NL(2MP_i+1)
迭代重构抵消	L (2MP_s+1)+2NL(2MP_i+1)

References 17

[1]	MARK D , . Paired carrier multiple access(PCMA) for satellite communication[C]// Pacific Telecommunications Conference. Honolulu,Hawaii, 1998: 787-791.
[2]	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.
[3]	TENGTRAIRAT N , GAO B , WOO W L ,et al. Single-channel blind separation using pseudo-stereo mixture and complex 2-D histogram[J]. IEEE Transactions on Neural Networks and Learning Systems, 2013,24(11): 1722-1735.
[4]	GAO B , WOO W L , DLAY S S . Unsupervised single-channel separation of nonstationary signals using gammatone ilterbank and Itakura-Saito nonnegative matrix two-dimensional actorizations[J]. IEEE Transactions on Circuits and Systems, 2013,60(3): 662-675.
[5]	TU S L , ZHENG H , GU N . Single-channel blind separation of two QPSK signals using per-survivor processing[C]// IEEE Asia Pacific Conference on Circuits and Systems. 2008: 473-476.
[6]	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 , CHENG 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.
[7]	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 . Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals[J]. Journal on Communications, 2011,32(8): 111-117.
[8]	杜健, 巩克现, 彭华 . 基于CHASE译码思想的PCMA信号盲分离算法[J]. 通信学报, 2015,03: 98-103.
	DU J , GONG K X , PENG H . Algorithm for blind separation of PCMA based on CHASE decoding[J]. Journal on Communications, 2015,03: 98-103.
[9]	崔鹏辉, 熊涛, 江桦 ,等. 基于判决反馈前馈的RSDFF-PSP盲分离算法[J]. 电子学报, 2016,03: 633-638.
	CUI P H , XIONG T , JIANG Y ,et al. RSDFF-PSP blind separation algorithm based on decision feedback-feedforward[J]. Acta Electronica Sinica, 2016,03: 633-638.
[10]	杨勇, 张冬玲, 彭华 ,等. 利用 Gibbs 采样的邻频混合信号单通道盲分离[J]. 通信学报, 2015,36(4): 156-162.
	YANG Y , ZHANG D L , PENG H ,et al. Single-channel blind separation of co-frequency modulated signals based on Gibbs sampler[J]. Journal on Communications, 2015,36(4): 156-162.
[11]	付迪, 高勇 . 非对称 PCMA 卫星信号的截获方法[J]. 军事通信, 2007,07: 28-30,34.
	FU D , GAO Y . Signal interception method for asymmetric PCMA satellite communication systems[J]. Modern Electronics Technique, 2007,07: 28-30,34.
[12]	JIANG W , LI D . Iterative single-antenna interference cancellation:algorithms and results[J]. IEEE Trans on Vehicular Technology, 2009,58(5): 2214-2224.
[13]	廖灿辉, 周世东, 朱中梁 . 从强信号掩盖中检出弱信号的一种新检测算法[J]. 系统仿真学报, 2010,04: 986-990.
	LIAO C H , ZHOU S D.ZHU Z L . Novel algorithm for activity detection of weak signals covered by strong signal[J]. Journal of System Simulation, 2010,04: 986-990.
[14]	莫平华, 张越, 文晓 ,等. 基于重构抵消的非对称 PCMA 信号分离技术研究[J]. 电信技术研究, 2014(2): 21-27.
	MO P H , ZHANG Y , WEN X ,et al. Research on asymmetric PCMA signal separation technology based on reconstruction offset[J]. Research on Telecommunication Technology, 2014(2): 21-27.
[15]	万坚, 涂世龙, 廖灿辉 ,等. 通信混合信号盲分离理论与技术[M]. 国防工业出版社, 2012: 128-130.
	WAN J , TU S L , LIAO C H ,et al. Theory and technology on blind source separation of communication signals[M]. Beijing: National Defense Industry PressPress, 2012.
[16]	杨小女 . 同步参数高精度估计研究[D]. 解放军信息工程大学, 2007: 15-21, 33-36
	YANG X N . Research on high accuracy estimation of synchronization parameters[D]. PLA Information Engineering University, 2007: 15-21, 33-36
[17]	PROAKIS J G . 数字通信(第五版)[M]. 北京: 电子工业出版社, 2011: 198-224, 512-528.
	PROAKIS J G . Solutions manual digital communications (5th Edition)[M]. Beijing: Publishing House of Electronics Industry, 2011: 198-224, 512-528.

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