| 一种变步长凸组合自适应滤波器及其均方性能分析 |
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| 引用本文： | 于霞,刘建昌,李鸿儒.一种变步长凸组合自适应滤波器及其均方性能分析[J].电子学报,2010,38(2):480-484. |
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| 作者姓名： | 于霞 刘建昌 李鸿儒 |
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| 作者单位： | (1. 东北大学流程工业综合自动化教育部重点实验室，辽宁沈阳 110004；2. 东北大学信息科学与工程学院，辽宁沈阳 110004) |
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| 基金项目： | 国家自然科学基金(No.50974145);;辽宁省自然科学基金(No.20092012) |
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| 摘 要： | 在分析凸组合最小均方(CLMS)算法性能的基础上，提出一种新的变步长凸组合最小均方(VSCLMS)算法。该算法采用一种变步长滤波器替代原CLMS滤波器组中的恒值大步长滤波器，使新的自适应滤波器能够在噪声、时变，甚至非平稳的环境下保持良好的随动性能，并在收敛的各个阶段均保持快速且稳定的均方特性。理论推导与仿真分析分别验证了新算法与原CLMS算法相比不仅有更快的收敛速度，而且稳态均方性能与跟踪性能也有所提高。
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| 关 键 词： | 自适应滤波 CLMS算法 变步长 凸组合 |
| 收稿时间： | 2008-9-18 |
| 修稿时间： | 2009-6-5 |
A Convex Combination of Variable Step-size Adaptive Filter and Its Mean-Square Performance Analysis |
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| YU Xia,LIU Jian-chang,LI Hong-ru.A Convex Combination of Variable Step-size Adaptive Filter and Its Mean-Square Performance Analysis[J].Acta Electronica Sinica,2010,38(2):480-484. |
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| Authors: | YU Xia LIU Jian-chang LI Hong-ru |
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| Affiliation: | 1.Key Laboratory of Integrated Automation of Process Industry, Northeastern University, Ministry of Education, Shenyang, Liaoning 110004, China;2.College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110004, China |
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| Abstract: | Based on the performance analysis of the CLMS algorithm,a new variable step-size convex combination of least-mean-square(VSCLMS) algorithm was presented.This algorithm proposed a variable step-size adaptive filter to replace one of the original CLMS filters with the constant step-size parameter.Therefore,the new algorithm has a better tracking performance in the presence of noise,time-varying and even non-stable environment.Besides,the new algorithm also has the performance in convergence processing.Theoret... |
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| Keywords: | adaptive filtering CLMS algorithm variable step-size convex combination |
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