Unbiased plain gradient adaptive IIR notch filter for echo cancellation

Dhanawan, S.; Charoenphol, A.; Benjangkaprasert, C.

doi:10.1109/ISCI.2011.5958967

Unbiased plain gradient adaptive IIR notch filter for echo cancellation

Author(s)

Dhanawan, S.

Charoenphol, A.

Benjangkaprasert, C.

Date Issued

September 1, 2011

Type

Conference Paper

DOI

10.1109/ISCI.2011.5958967

Abstract

An adaptive echo canceller based on adaptive IIR notch filter with unbiased plain gradient algorithm is proposed, for the echo cancellation in telephone network. The unbiased plain gradient algorithm employs the bias removal techniques to remove the bias existing in the estimated parameter, resulting in obtaining good estimate of parameter for the echo canceller. Simulation results show that the proposed canceller outperforms the canceller with the classical LMS algorithm in terms of echo return loss enhancement (ERLE). © 2011 IEEE.

Citation

Isci 2011 2011 IEEE Symposium on Computers and Informatics, 506-509, 2011