计算机工程与应用Issue(15)：168-171,4.DOI:10.3778/j.issn.1002-8331.1307-0102
变阶变正则化APA在回声抵消中的应用
APA with evolving order and variable regularization for echo cancellation
摘要
Abstract
Recently Affine Projection Algorithm(APA)has become a very popular algorithm in the application of acoustic echo cancellation. According to the contradictory factors of convergence rate and steady-state misalignment, a new algorithm by the behavior of associating variable regularization and evolving order has been proposed. It will reach a much better state by coordinating variable regularization and evolving order. Instead of the conventional assumption that the a posteriori error is zero, this paper incorporates the statistical characteristic of the noise into the adaptation process. Exact and approx-imate formulations for the optimal regularization factor are derived. Numerical simulation results show that the proposed algorithm improves the performance of the APA in terms of its faster convergence rate and lower steady-state misalign-ment compared to existing variable regularization APA and evolving order APA, respectively.关键词
变正则化因子/变阶数/仿射投影算法(APA)/声学回声抵消Key words
variable regularization/evolving order/Affine Projection Algorithm(APA)/acoustic echo cancellation分类
信息技术与安全科学引用本文复制引用
冀常鹏,姬红红,郭伟平..变阶变正则化APA在回声抵消中的应用[J].计算机工程与应用,2014,(15):168-171,4.基金项目
国家自然科学基金（No.50490275）。 （）
