| 一种变迭代参数的变阶数LMS算法 |
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| 引用本文： | 李宁,张勇刚,赵玉新,郝燕玲.一种变迭代参数的变阶数LMS算法[J].数据采集与处理,2010,25(3). |
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| 作者姓名： | 李宁 张勇刚 赵玉新 郝燕玲 |
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| 作者单位： | 1. 哈尔滨工程大学自动化学院,哈尔滨,150001
2. 哈尔滨工程大学自动化学院,哈尔滨,150001;拉夫堡大学电子和电气工程系,莱斯特郡,LE11 3TU,英国 |
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| 摘 要： | 介绍了基于分数阶数的变阶数最小均方算法(Fractional tap-length least mean square,FTLMS),分析算法中迭代参数对FTLMS算法收敛性能的影响.利用系统输出误差随滤波器阶数及滤波器抽头权系数迭代过程逐渐减小的特点,提出了一种新的变迭代参数的变阶数LMS算法(Variable parameter FTLMS,VP-FTLMS).在高噪声和低噪声环境下对本文提出的算法分别进行仿真验证,并与不同的滤波器阶数迭代参数设置下的FTLMS算法相比较.仿真结果表明,与FTLMS算法相比,本文提出的VP-FTLMS算法具有更快的阶数收敛速度及更小的稳态振荡,同时获得了较小的稳态额外均方误差(Excess mean square error,EMSE).
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| 关 键 词： | 自适应滤波器 最小均方 变阶数 迭代参数 |
Variable Tap-Length Algorithm with Variable Adaptive Parameter |
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| Li Ning,Zhang Yonggang,Zhao Yuxin,Hao Yanling.Variable Tap-Length Algorithm with Variable Adaptive Parameter[J].Journal of Data Acquisition & Processing,2010,25(3). |
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| Authors: | Li Ning Zhang Yonggang Zhao Yuxin Hao Yanling |
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| Affiliation: | Li Ning1,Zhang Yonggang1,2,Zhao Yuxin1,Hao Yanling1(1.College of Automation,Harbin Engineering University,Harbin,150001,China,2.Department of Electronic, Electrical Engineering,Loughborough University,Loughborough,LE11 3TU,UK) |
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| Abstract: | Fractional tap-length least mean square algorithm(FTLMS) is introduced and the convergence performance is analyzed.Results show that the adaptive parameter plays an important role in the FTLMS algorithm.Since the output error decreases with the convergence of the tap-length and coefficients,a new variable tap-length algorithm with a variable adaptive parameter(VP-FTLMS) is proposed. The proposed algorithm is compared with the FTLMS algorithm with different adaptive parameters under both low noise and high n... |
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| Keywords: | adaptive filter least mean square(LMS) variable tap-length variable adaptive parameter |
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