一种变步长AP-REE算法的研究  

A Better Variable Step-Size (VSS) Affine Projection(AP) Algorithm Using Regressive Estimated Error(REE)

作　　者：智永锋[1] 郑曦[1] 李茹[1] 邓正宏[1] 张骏[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《西北工业大学学报》2013年第2期183-188,共6页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(61201321);西北工业大学基础研究基金(JC20100217)资助

摘　　要：为了提高自适应滤波器的滤波性能,提出了一种变步长的AP-REE算法。通过分析AP-REE算法权值误差和权值均方误差的二阶统计量,获得了参数迭代步长的一个优化解,促进了AP-REE算法在迭代方向上均方误差的收敛速度。仿真结果表明,相比较于定步长的AP-REE算法,变步长的AP-REE算法获得了更快的收敛速度。Aim. To improve the convergence rate performance of an adaptive filter, especially for the highly colored input signals, Refs. 2 and 3 adopt the AP algorithm. Ref. 11 adopts AP-REE algorithm by redefining the iterated error for the AP algorithm. However, its gain does not change, and thus its convergence is not as rapid as is possible, in our opinion, with adaptive gain. We explain mathematically in sections 1, 2 and 3 of the full paper our VSS-AP-REE algorithm and explain how it achieves optimization. The simulation results, shown in Figs. 1 and 2, and their analysis indicate preliminarily that our VSS-AP-REE algorithm has faster convergence performance as compared with the conventional AP-REE algorithm.

关 键 词：自适应滤波 算法 计算机仿真 数值法的收敛性 优化估计 变步长AP—REE算法 

分 类 号：TN713[电子电信—电路与系统]