New variable block-size frequency-domain LMS adaptive algorithm

doi:10.3778/j.issn.1002-8331.2009.02.010

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (2): 34-38.DOI: 10.3778/j.issn.1002-8331.2009.02.010

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New variable block-size frequency-domain LMS adaptive algorithm

YANG Qun^1,2,ZENG Xue-wen²,WANG Jin-lin²

1.Graduate University of Chinese Academy of Sciences，Beijing 100049，China
2.National Network New Media Engineering Research Center，Institute of Acoustics of CAS，Beijing 100190，China

Received:2008-09-27 Revised:2008-10-27 Online:2009-01-11 Published:2009-01-11
Contact: YANG Qun

新的变块长频域批处理LMS算法

杨群^1,2,曾学文²,王劲林²

1.中国科学院研究生院，北京 100049
2.中国科学院声学所国家网络新媒体工程技术研究中心，北京 100190

通讯作者: 杨群

Abstract

Abstract: To conquer the confliction of convergence speed and steady stage error in the traditional FBLMS（Frequency-domain Block Least Mean Square） algorithms，a new variable block-size frequency-domain LMS adaptive algorithm is proposed，which is different from variable step-size LMS adaptive algorithms.It balances the conflict by adjusting block-size adaptively.The simulations on a Matlab platform show that the proposed algorithm has higher convergence speed and smaller steady stage error than the traditional FBLMS algorithms.

Key words: frequency-domain, Least Mean Square（LMS） algorithm, variable block-size, adaptive filtering

摘要： 针对传统的频域批处理LMS（Frequency-domain Block Least Mean Square，FBLMS）算法在收敛速度和稳态误差之间存在矛盾的问题，不同于变步长LMS算法，提出了一种新的变块长频域批处理LMS算法，采用自适应改变的批处理块块长的方法来协调解决这个矛盾。通过Matlab对提出的算法进行计算机仿真，结果表明相比于传统的FBLMS算法，新算法具有更快的收敛速度和更小的稳态误差。

关键词: 频域, 最小均方（LMS）算法, 变块长, 自适应滤波

YANG Qun^1,2,ZENG Xue-wen²,WANG Jin-lin². New variable block-size frequency-domain LMS adaptive algorithm[J]. Computer Engineering and Applications, 2009, 45(2): 34-38.

杨群^1,2,曾学文²,王劲林². 新的变块长频域批处理LMS算法[J]. 计算机工程与应用, 2009, 45(2): 34-38.

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New variable block-size frequency-domain LMS adaptive algorithm

新的变块长频域批处理LMS算法

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