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Intermittently Updated Simplified Proportionate Affine Projection Algorithm

Authors:
Felix Albu
Henri Coanda
Dinu Coltuc
Marius Rotaru

Keywords: Proportionate-type algorithms; adaptive filters; affine projection algorithm; logarithmic number system.

Abstract:
In this paper, an intermittent update interval for filter coefficients and a simplified output error vector computation is proposed for a proportionate affine projection algorithm. It is shown that the proposed algorithm has good convergence performance and much smaller computation complexity than other proportionate-type APAs. Also, the accuracy of its implementation using the logarithmic number system was investigated. We demonstrated the performance of the proposed algorithm for echo cancellation and adaptive feedback cancellation applications.

Pages: 42 to 47

Copyright: Copyright (c) IARIA, 2014

Publication date: May 25, 2014

Published in: conference

ISSN: 2308-4146

ISBN: 978-1-61208-341-4

Location: Venice, Italy

Dates: from May 25, 2014 to May 29, 2014