基于去相关NLMS算法的自适应回波抵消

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Adaptive Echo Cancellation Based on Decorrelation NLMS Algorithm

WANG Zhen-li1, ZhANG Xiong-wei1, YANG Ji-bin1，HAN Yan－ming2

1.Department of Electronic Information Engineering , PLAUST, Nanjing 210007,China;
2. Military Delegation of Airforce at Hu-Ning Region, Nanjing 210013,China

Received:2004-08-26 Revised:2004-11-01 Online:2006-01-31 Published:2006-01-31

Abstract

Abstract:

Based on NLMS, this paper proposes a decorrelation NLMS algorithm (DC-NLMS) by employing auto-correlation of the input speech signal. The proposed algorithm has fast convergence speed, but small stability maladjustment with the same computational complexity as NLMS, therefore overcomes the drawback of APA. Simulation results indicate that the DC-NLMS algorithm is optimal in adaptive echo cancellation as compared with NLMS, APA, and a previously developed algorithm in the literature.

Key words:

adaptive echo cancellation, NLMS algorithm, APA, decorrelation

WANG Zhen-li;ZhANG Xiong-wei;YANG Ji-bin;HAN Yan－ming.

Adaptive Echo Cancellation Based on Decorrelation NLMS Algorithm

[J]. Journal of Applied Sciences.

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Adaptive Echo Cancellation Based on Decorrelation NLMS Algorithm

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