Subband MMSE bounds for filterbank adaptation in system modeling non-uniform subband adaptive filters
نویسندگان
چکیده
NON-UNIFORM SUBBAND ADAPTIVE FILTERS Jacob D. Griesbach, Michael Lightner, and Delores M. Etter Department of Electrical and Computer Engineering University of Colorado Boulder, CO 80309 [email protected], [email protected], [email protected] ABSTRACT Minimum mean square error estimators have been developed for non-uniform subband adaptive filters (SAFs) in system modeling configurations. The next step towards practical implementation of non-uniform SAFs 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 (MSE) bounds to suggest decimation factors. A numerical simulation shows that a non-uniform SAF can achieve lower MSE with lower complexity than a equivalent uniform SAF.
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