Convergence behavior of the LMS algorithm in subband adaptive filtering

被引:10
作者
Ohno, S [1 ]
Sakai, H [1 ]
机构
[1] Shimane Univ, Dept Math & Comp Sci, Matsue, Shimane 6908504, Japan
关键词
adaptive filter; subband adaptive filtering; LMS algorithm; convergence behavior;
D O I
10.1016/S0165-1684(00)00263-2
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
Subband adaptive filtering with an LMS-type algorithm has been considered as a possible alternative to the conventional fullband adaptive filtering. However, its convergence behavior has not yet been sufficiently analyzed. In this paper, an approximate expression for the convergence behavior of the cancellation error of the critically sampled subband adaptive digital filters (ADF) is presented. It is represented in the frequency domain and enables us to infer whether the subband ADF is efficient in terms of convergence speed. Computer simulations are presented to see the validity of the expression. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1053 / 1059
页数:7
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