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A nonparametric variable step-size NLMS algorithm for transversal filters

delete2011-05-01
delete29
PRE
AI
J
Jianchang Liu
X
Xia Yu *
李鸿茹 封面图
李鸿茹 (Hongru Li)
DOI:10.1016/j.amc.2011.02.026delete
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摘要

摘要

En 中文
A nonparametric adaptive filtering approach is proposed in this paper. The algorithm is obtained by exploiting a time-varying step size in the traditional NLMS weight update equation. The step size is adjusted according to the square of a time-averaging estimate of the autocorrelation of a priori and a posteriori error. Therefore, the new algorithm has more effective sense proximity to the optimum solution independent of uncorrelated measurement noise. Moreover, this algorithm has fast convergence at the early stages of adaptation and small final misadjustment at steady-state process. It works reliably and is easy to implement since the update function is nonparametric. Furthermore, the experimental results in system identification applications are presented to illustrate the principle and efficiency of the proposed algorithm. (C) 2011 Elsevier Inc. All rights reserved.
Keyword:
Normalized least-mean-square (NLMS)
Variable step-size NLMS
Nonparametric
Transversal filters
System identification

期刊

Applied Mathematics and Computation 封面图
Applied Mathematics and Computation
IF:
3.4
论文数:
2.3W
被引数:
3.3W

机构

N
northeastern university - china
学者数:
3.2W
论文数: 2.7W
被引数: 37
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