A modified frequency-domain block LMS algorithm with guaranteed optimal steady-state performance

作     者：Lu, Jing Qiu, Xiaojun Zou, Haishan 

作者机构：Nanjing Univ Inst Acoust Key Lab Modem Acoust Nanjing 210093 Jiangsu Peoples R China 

出 版 物：《SIGNAL PROCESSING》 (信号处理)

年 卷 期：2014年第104卷

页      面：27-32页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：National Science Foundation of China [11374156  11204130] 

主　　题：Adaptive filters Frequency-domain implementation Steady-state behavior 

摘      要：The bin-normalized frequency-domain block LMS (FBLMS) algorithm has low computational burden and potential fast convergence;however, it suffers from a biased steady-state solution when the reference signal lags behind the desired signal or the adaptive filter is of insufficient length. This paper proposes a unified framework for the FBLMS algorithm, which can be used to comprehensively analyze its steady-state behavior. Furthermore, a modified FBLMS algorithm with guaranteed optimal steady-state performance is proposed based on the framework. Simulations are carried out to demonstrate the benefit of the proposed algorithm. (C) 2014 Elsevier B.V. All rights reserved.