Sign subband adaptive filter with l1-norm minimisation-based variable step-size

被引：36

作者：

Kim, J. H. ^{[1
]}

Chang, J. -H. ^{[1
]}

Nam, S. W. ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea

来源：

ELECTRONICS LETTERS | 2013年 / 49卷 / 21期

基金：

新加坡国家研究基金会;

关键词：

adaptive filters; convex programming; minimisation; a""(1)-norm minimisation-based variable step-size; variable step-size sign subband adaptive filter; VSS-SSAF; nondifferentiable convex problem; impulsive interferences;

D O I：

10.1049/el.2013.2011

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：

A new variable step-size sign subband adaptive filter (VSS-SSAF), not requiring any a priori information, is proposed by minimising the (1)-norm of the subband a posteriori error under a box-constraint on the step-size. In addition, an efficient numerical procedure for updating its VSS is introduced to solve the non-differentiable convex problem. The proposed algorithm provides comparable or better convergence performance, when compared with the recent VSS-SSAF (minimising the mean-squares deviation with a priori knowledge of noise variance) or other conventional algorithms aimed at robustness against impulsive interferences.

引用

页码：1325 / 1326

页数：2

共 5 条

[1]

Lee K.A., 2009, Subband Adaptive Filtering: Theory and Implementation

[2] Inherent decorrelating and least perturbation properties of the normalized subband adaptive filter [J].