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A new block-based stochastic adaptive algorithm for sparse echo cancellation

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3 Author(s)
De-Sheng Chen ; Department of Computer Science and Information Engineering Feng-Chia University Taichung, Taiwan, R.O.C. ; Kui-Shun Chou ; Yi-Wen Wang

The sparse nature of a network echo response makes standard NLMS based adaptive algorithms perform poorly. Fast convergence, yet low complexity, of adaptive filter design causes another challenge. In this paper, a new Stochastic Selective Partial Update Normalized Least Mean Square (SSPNLMS) algorithm is proposed. Based on an efficient stochastic search and two block-based tap selection criteria, this algorithm exploits both sparseness of the echo response and sparseness of the input signal to achieve high quality adaptive filters without much computational cost. Simulation results show our proposed algorithm has promising convergence performance for the cases of white Gaussian noise input signal and the speech signals.

Published in:

Signal Processing Systems (ICSPS), 2010 2nd International Conference on  (Volume:1 )

Date of Conference:

5-7 July 2010