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Subband MMSE bounds for filterbank adaptation in system modeling non-uniform subband adaptive filters

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3 Author(s)
Griesbach, J.D. ; Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA ; Lightner, M. ; Etter, D.M.

Minimum mean square error estimators have been developed for non-uniform subband adaptive filters (SAF) in system modeling configurations. The next step towards practical implementation of non-uniform SAF involves developing an adaptive algorithm to control the non-uniform filterbank's bandwidths and decimation factors. This paper constructs such an algorithm using subband minimum mean square error (MMSE) bounds to suggest decimation factors. A numerical simulation shows that a non-uniform SAF can achieve lower MSE with lower complexity than an equivalent uniform SAF

Published in:

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on  (Volume:6 )

Date of Conference:

2001