| 基于LMS算法的自适应滤波及在回声消除中的应用 |
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| 引用本文： | 赵欣波,杨苹. 基于LMS算法的自适应滤波及在回声消除中的应用[J]. 信息技术, 2006, 30(8): 28-31 |
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| 作者姓名： | 赵欣波 杨苹 |
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| 作者单位： | 华南理工大学电力学院,广州,510640 |
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| 摘 要： | 介绍NLMS和NVLMS两种算法控制步长的思想。在此基础上，提出了新的变步长算法，同时使用误差积累和误差控制步长变化，并构建了基于自适应滤波算法的回声消除系统，将三种算法分别在此系统中应用，仿真验证了提出的算法具有更快的收敛速度和更小的稳态误差。并且在发生系统跳变时也能快速收敛。
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| 关 键 词： | LMS算法 自适应滤波 变步长LMS算法 回声消除 |
| 文章编号： | 1009-2552(2006)08-0028-03 |
| 修稿时间： | 2006-02-22 |
Variable step-size LMS adaptive filtering for echo canceller |
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| ZHAO Xin-bo,YANG Ping. Variable step-size LMS adaptive filtering for echo canceller[J]. Information Technology, 2006, 30(8): 28-31 |
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| Authors: | ZHAO Xin-bo YANG Ping |
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| Abstract: | In this paper,the principle of LMS(Least Mean Square) algorithm,NLMS and NVSS algorithm to change step size are presented and analyzed.Based on that,a new step-variable LMS algorithm is proposed and the step is controlled by both the error vector and its square norm summation.The simulation in the EC system demonstrates that the new algorithm gets significant improvements in the speed of convergence with a very small misadjusted value in stationary environments and better tracking capability. |
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| Keywords: | LMS algorithm adaptive filtering step-variable LMS algorithm echo canceller |
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