Multirate Algorithm for Updating the Coefficients of Adaptive Filter

摘要：

This paper presents a novel algorithm which can dynamically change the update rate of the coefficients of adaptive filter by analysing the actual application environments.This algorithm builds a nonlinear function relationship between the update rate and the minimum error which can automatically adjust the update rate.When the environment is varying,the rate is increased,while it would be decreased when the environment is stable.And the computation complexity of adaptive filter can be significantly reduced.This is because most multiplications that cost in adaptive filter is consumed by calculating the coefficients.Acoustic echo cancellation(AEC)experiments indicate that the scheme proposed in this paper performs significantly better than traditional algorithms.

作者: DONG Hang SUN Hong

作者单位: Signal Processing Lab,School of Electronic Information Wuhan University,Wuhan,China

会议类型: 国际会议

会议名称: 第一届智能网络与智能系统国际会议(ICINIS 2008)(The First International Conference on Intelligent Networks and Intelligent Systems)

会议地点: 武汉

会议语种:英文

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）