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Cited 23 time in webofscience Cited 26 time in scopus
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Variable Step-Size Affine Projection Sign Algorithm

Title
Variable Step-Size Affine Projection Sign Algorithm
Authors
Yoo, JShin, JPark, P
POSTECH Authors
Park, P
Date Issued
Apr-2014
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Abstract
This brief proposes a novel variable step-size affine projection sign algorithm (APSA), which is characterized by its robustness against impulsive noises. To obtain a step size reasonably, the proposed algorithm investigates the mean-square deviation (MSD) of APSA. Because it is impossible to accurately compute the MSD of APSA, the proposed algorithm derives the upper bound of the MSD using the upper bound of the L-1-norm of the measurement noise. The optimal step size is calculated at each iteration by minimizing the upper bound of the MSD, which improves the filter performance, with respect to the convergence rate and the steady-state estimation error. The simulation results demonstrate that the proposed algorithm improves the filter performance in a system-identification scenario in the presence of impulsive noises.
Keywords
Adaptive filter; affine projection sign algorithm (APSA); impulsive noise; variable step size; ADAPTIVE FILTER
URI
http://oasis.postech.ac.kr/handle/2014.oak/14348
DOI
10.1109/TCSII.2014.2305013
ISSN
1549-7747
Article Type
Article
Citation
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, vol. 61, no. 4, page. 274 - 278, 2014-04
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 PARK, POOGYEON
Dept of Electrical Enginrg
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