论文:2013,Vol:31,Issue(2):183-188
引用本文:
智永锋, 郑曦, 李茹, 邓正宏, 张骏. 一种变步长AP-REE算法的研究[J]. 西北工业大学
Zhi Yongfeng, Zheng Xi, Li Ru, Deng Zhenghong, Zhang Jun. A Better Variable Step-Size (VSS) Affine Projection (AP) Algorithm Using Regressive Estimated Error (REE)[J]. Northwestern polytechnical university

一种变步长AP-REE算法的研究
智永锋, 郑曦, 李茹, 邓正宏, 张骏
西北工业大学 自动化学院, 陕西 西安 710072
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。
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   
A Better Variable Step-Size (VSS) Affine Projection (AP) Algorithm Using Regressive Estimated Error (REE)
Zhi Yongfeng, Zheng Xi, Li Ru, Deng Zhenghong, Zhang Jun
Department of Automatic Control,Northwestern Polytechnical University,Xi'an 710072,China
Abstract:
Aim. To improve the convergence rate performance of an adaptive filter, especially for the highly coloredinput signals,Refs. 2 and 3 adopt the AP algorithm. Ref. 11 adopts AP-REE algorithm by redefining the iteratederror for the AP algorithm. However,its gain does not change,and thus its convergence is not as rapid as is possi-ble,in our opinion,with adaptive gain. We explain mathematically in sections 1,2 and 3 of the full paper ourVSS-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 ascompared with the conventional AP-REE algorithm.
Key words:    adaptive filtering    algorithms    computer simulation    convergence of numerical methods    estimation    optimization;VSS-AP-REE (variable step-size affine projection using regressive estimated error) al-gorithm   
收稿日期: 2012-05-12     修回日期:
DOI:
基金项目: 国家自然科学基金(61201321);西北工业大学基础研究基金(JC20100217)资助
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作者简介: 智永锋(1979-),西北工业大学讲师,主要从事自适应滤波算法的研究。
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