Fast Converging Nonlinear Echo Cancellation Based On Optimum Step Size

被引：3

作者：

Shih, Chia-Sheng ^{[1
]}

Hsieh, Shih-Fu ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu 300, Taiwan

来源：

2009 IEEE INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND INFORMATION TECHNOLOGY (ISSPIT 2009) | 2009年

关键词：

Adaptive filtering; Nonlinear Identification;

D O I：

10.1109/ISSPIT.2009.5407533

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Adaptive Volterra filter is generally known to track nonlinear echo path at slow convergence rate. An optimum time- and tap- variant step-size for second-order Volterra filter is proposed to speed up its convergence rate. The step-size is derived based on the MMSE criterion. As the optimum step-size needs to know the real echo path coefficient, an exponential echo-path model is proposed for practical implementations. Computer simulations are provided to validate the proposed algorithms.

引用

页码：135 / 139

页数：5

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