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http://dx.doi.org/10.5370/KIEE.2011.60.2.423

Subband IPNLMS Adaptive Filter for Sparse Impulse Response Systems  

Sohn, Sang-Wook (충북대학교 전기공학과)
Choi, Hun (동의대학교 전자공학과)
Bae, Hyeon-Deok (충북대학교 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.2, 2011 , pp. 423-430 More about this Journal
Abstract
In adaptive filtering, the sparseness of impulse response and input signal characteristics are very important factors of it's performance. This paper presents a subband improved proportionate normalized least square (SIPNLMS) algorithm which combines IPNLMS for impulse response sparseness and subband filtering for prewhitening the input signal. As drawing and combining the advantage of conventional approaches, the proposed algorithm, for impulse responses exhibiting high sparseness, achieve improved convergence speed and tracking ability. Simulation results, using colored signal(AR(4)) and speech input signals, show improved performance compared to fullband structure of existing methods.
Keywords
Sparse impulse response; Subband IPNLMS; Adaptive filter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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