Noise Constrained Data-Reusing Adaptive Algorithms for System Identification

Young-Seok CHOI  Woo-Jin SONG  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E95-A   No.6   pp.1084-1087
Publication Date: 2012/06/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E95.A.1084
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
Keyword: 
adaptive filter,  data-reusing,  least-mean square (LMS),  affine projection (AP),  noise constraint,  

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Summary: 
We present a new framework of the data-reusing (DR) adaptive algorithms by incorporating a constraint on noise, referred to as a noise constraint. The motivation behind this work is that the use of the statistical knowledge of the channel noise can contribute toward improving the convergence performance of an adaptive filter in identifying a noisy linear finite impulse response (FIR) channel. By incorporating the noise constraint into the cost function of the DR adaptive algorithms, the noise constrained DR (NC-DR) adaptive algorithms are derived. Experimental results clearly indicate their superior performance over the conventional DR ones.