A new variable tap-length LMS algorithm to model an exponential decay impulse response

被引：23
|
作者：
Zhang, Yonggang [1 ]
Chambers, Jonathon A.
Sanei, Saeid
Kendrick, Paul
Cox, Trevor J.
机构：
[1] Cardiff Univ, Cardiff Sch Engn, Ctr Digital Signal Proc, Cardiff CF24 3AA, S Glam, Wales
[2] Univ Salford, Sch Acoust & Elect Engn, Salford M5 4WT, Lancs, England
来源：
IEEE SIGNAL PROCESSING LETTERS | 2007年 / 14卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
adaptive filters; variable tap-length least-mean-square (LMS) algorithm;
D O I：
10.1109/LSP.2006.887784
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：
This letter proposes a new variable tap-length least-mean-square (LMS) algorithm for applications in which the unknown filter impulse response sequence has an exponential decay envelope. The algorithm is designed to minimize the mean-square deviation (MSD) between the optimal and adaptive filter weight vectors at each iteration. Simulation results show the proposed algorithm has a faster convergence rate as compared with the fixed tap-length LMS algorithm and is robust to the initial tap-length choice.
引用
收藏
页码：263 / 266
页数：4
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