Adaptive combination of subband adaptive filters with selective partial updates

Authors:
Chang Liu;Miao He;Wei Xia
Affiliations:
Department of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China;Department of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China;Department of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China
Venue:
AICI'11 Proceedings of the Third international conference on Artificial intelligence and computational intelligence - Volume Part I
Year:
2011

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Abstract

Combining the concepts of adaptive combination and selective partial updates (SPU) in the normalized subband adaptive filter (NSAF), an adaptive combination of two NSAFs with SPU (SPU-CNSAF) is presented. The proposed scheme not only reduces the computational complexity but also provides a good convergence performance. Simulation results show the efficiency of the proposed scheme. In addition, the SPU concept can also be extended to some other combination schemes such as the combination of normalized least mean square (NLMS) filters, recursive least squares (RLS) filters and affine projection (AP) filters.