A NEW METHOD FOR ADAPTIVE TIME-DELAY ESTIMATION FOR NON-GAUSSIAN SIGNALS

被引：33

作者：

CHIANG, HH ^{[1
]}

NIKIAS, CL ^{[1
]}

机构：

[1] NORTHEASTERN UNIV, DEPT ELECT & COMP ENGN, COMMUN & DIGITAL SIGNAL PROC CTR RES & GRAD STUDIE, BOSTON, MA 02115 USA

来源：

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING | 1990年 / 38卷 / 02期

关键词：

D O I：

10.1109/29.103056

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A new adaptive scheme for time delay estimation is introduced for signal environments where the signal is non-Gaussian and the additive noise sources are spatially correlated Gaussian with unknown power spectrum characteristics. The new scheme is based on parametric modeling between two sensor measurements and employs higher-order statistics (third- or fourth-order) of the data. It is demonstrated by means of extensive simulations that the new adaptive scheme works well for both stationary and nonstationary cases. As expected, it outperforms the cross-correlation-based gradient method for time delay adaptation in spatially correlated Gaussian noises. The new scheme is also compared to the overdetermined recursive instrumental variable method, and is shown to exhibit substantially less computational complexity. © 1990 IEEE

引用

页码：209 / 219

页数：11

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