DocumentCode :
180238
Title :
There´s plenty of room at the bottom: Incremental combinations of sign-error LMS filters
Author :
Chamon, Luiz F. O. ; Lopes, Cassio G.
Author_Institution :
Dept. of Electron. Syst. Eng., Univ. of Sao Paulo, Sao Paulo, Brazil
fYear :
2014
fDate :
4-9 May 2014
Firstpage :
7248
Lastpage :
7252
Abstract :
The introduction of data reuse in the incremental topology made it possible for combinations of LMS filters to outperform algorithms such as the Affine Projection Algorithm (APA) with lower complexity. This work poses and extends the concept of combinations as a complexity reduction technique by proposing an incremental combination of sign-error LMS filters that matches and even outperforms stand-alone LMS filters with reduced complexity. This combination is then analyzed and used as a building block in a larger combination that is able to match the APA at a reduced computational cost. Numerical simulations illustrate the performance of this novel combination in different scenarios.
Keywords :
adaptive filters; affine transforms; computational complexity; least mean squares methods; APA; adaptive filter; affine projection algorithm; complexity reduction technique; computational cost redution; data reuse; incremental combination; incremental topology; numerical simulation; sign error LMS filter; Adaptive algorithms; Complexity theory; Convergence; Least squares approximations; Projection algorithms; Signal processing algorithms; Vectors; Adaptive filtering; Affine Projection Algorithm; Combination of adaptive filters; Data reuse incremental combinations; Sign-error LMS;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on
Conference_Location :
Florence
Type :
conf
DOI :
10.1109/ICASSP.2014.6855007
Filename :
6855007
Link To Document :
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