Multi-delay block frequency domain adaptive filters with sparse partial subblock update

Authors:
Yifan Sun;Jie Chen;Keshab K. Parhi
Affiliations:
Franklin W. Olin College of Engineering, Olin Way, Needham, MA;Dept. of Electrical and Computer Engineering, Univ. of Minnesota, Minneapolis, MN;Dept. of Electrical and Computer Engineering, Univ. of Minnesota, Minneapolis, MN
Venue:
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Year:
2009

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Abstract

This paper presents a new frequency-domain adaptive algorithm for sparse echo cancellation by incorporating a sparse partial (SP) subblock selection scheme into the multidelay filtering (MDF) algorithm. Unlike the sparse partial tap selection method, the proposed algorithm selects the active regions based on FFT subblocks such that frequency bins within each subblock can be updated evenly. Simulation results show that the proposed algorithm has faster convergence performance with same steady-state mean squared error (MSE) as existing sparse partial MDF algorithms based on tap selection.