Subband Mmse Bounds For Filterbank Adaptation In System Modeling Non-Uniform Subband Adaptive Filters

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