| 一种新的变步长LMS自适应算法 |
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| 引用本文： | 兰瑞明,唐普英. 一种新的变步长LMS自适应算法[J]. 系统工程与电子技术, 2005, 27(7): 1307-1310 |
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| 作者姓名： | 兰瑞明 唐普英 |
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| 作者单位： | 电子科技大学光电信息学院,四川,成都,610054 |
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| 摘 要： | 为了提高LMS自适应算法的性能,在对一类变步长LMS算法研究的基础上,提出了步长因子与误差信号之间的一种新的非线性函数关系,进一步改善了此类算法的性能。在相同收敛速度或者相同超量均方误差的前提下,该算法具有更小的超量均方误差或者更快的收敛速度。计算机仿真结果与理论分析相一致,证实了该算法性能优于原算法。
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| 关 键 词： | 自适应滤波 变步长LMS 超量均方误差 系统识别 |
| 文章编号： | 1001-506X(2005)07-1307-04 |
| 修稿时间： | 2004-06-20 |
New variable step-size LMS adaptive algorithm |
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| LAN Rui-ming,TANG Pu-ying. New variable step-size LMS adaptive algorithm[J]. System Engineering and Electronics, 2005, 27(7): 1307-1310 |
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| Authors: | LAN Rui-ming TANG Pu-ying |
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| Abstract: | This paper discusses about a type of algorithms of variable step-size LMS adaptive filtering and presents another new non-linear functional relationship between the step-size and the error signal,which improves the algorithm performance.On the condition of the same convergence properties or the same excess MSE, the new algorithm has less excess MSE or has better convergence properties than the former algorithms.Computer simulation results confirm the theoretical analysis and show the algorithm is superior to the former algorithms in performance. |
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| Keywords: | adaptive filtering variable step-size LMS excess MSE system identfication |
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