An Acoustic Echo Cancellation Technique Based on Kurtosis Subgradient Projection Algorithm

摘要：

Based on the technique of projection onto convex sets (POCS),a kurtosis subgradient projection (KSP)algorithm is proposed in this paper which is applied in the scheme of the acoustic echo cancellation successfully.KSP algorithm utilizes the kurtosis of error signal after adaptive filtering as the projection area and expands this projection area to half space by using the definition of subgradient.Finally a simply projection expression can be got by projecting onto this half space.Experiments indicate that not only the convergence speed is increased but also the robustness to noise is enhanced compared to traditional method.Additionally,system performance gets promoted evaluated either by mean square error (MSE)or by echo path misalignment.

关键词： acoustic echo cancellation projection onto convex sets (POCS) kurtosis

作者: QIAO Jie ZHAO Li ZOU Cai-rong

作者单位: Department of Radio Engineering Southeast University NanJing, JiangSu, 210096, China

会议类型: 国际会议

会议名称: 2007 IEEE International Conference on Automation and Lofistics

会议地点: 山东济南

会议语种:英文

在线出版日期: 2007-08-18（万方平台首次上网日期，不代表论文的发表时间）