A cumulant-based method for the direct estimation of the spatial Wiener filter

被引:1
|
作者
Friedlander, B. [1 ]
Bose, S. [1 ]
机构
[1] Univ Calif Santa Cruz, Dept Elect Engn, Santa Cruz, CA 95064 USA
关键词
high-order statistics; estimation; filtering; source separation; array processing;
D O I
10.1016/j.dsp.2006.08.005
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 we propose a new algorithm for performing blind source separation and signal recovery for the narrowband case. This algorithm seeks to estimate and implement the Wiener filter directly, using the second- and fourth-order cumulants. The estimated filter is asymptotically consistent with or without noise, and is not subject to the bound imposed by pre-whitening as with some existing algorithms. In many cases it nearly achieves the clairvoyant Wiener limit as performance studies show. (C) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:695 / 711
页数:17
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