Blind-source separation based on decorrelation and nonstationarity

被引:13
|
作者
Yin, Fuliang [1 ]
Mei, Tiemin
Wang, Jun
机构
[1] Dalian Univ Technol, Sch Elect & Informat Engn, Dalian 116023, Peoples R China
[2] Shenyang Inst Technol, Sch Informat Sci & Engn, Shenyang 110168, Peoples R China
[3] Chinese Univ Hong Kong, Dept Mech & Automat Engn, Shatin, Hong Kong, Peoples R China
基金
中国国家自然科学基金;
关键词
blind-source separation (BSS); decorrelation; natural gradient; nonstationary processes; second-order statistics (SOS); stationary processes;
D O I
10.1109/TCSI.2007.895510
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, discrete-time blind-source separation (BSS) of instantaneous mixtures is studied. Decorrelation-based sufficient criteria for BSS of stationary and nonstionary sources are derived based on nonstationarity and nonwhiteness. A gradient algorithm is proposed based on these criteria. A batch-data algorithm and an on-line algorithm are developed based on the corollaries of the BSS criteria. These algorithms are especially useful for the separation of nonstationary sources. They are robust to additive white noises if the time-delayed decorrelation and the nonstationarity of the sources are considered simultaneously in the algorithms. Experiment results show the effectiveness and performance of the proposed algorithms.
引用
收藏
页码:1150 / 1158
页数:9
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