| 一种新的变步长LMS自适应算法及其在自适应噪声对消中的应用 |
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| 引用本文： | 陈素芝,李英.一种新的变步长LMS自适应算法及其在自适应噪声对消中的应用[J].江南大学学报(自然科学版),2004,3(6):583-586. |
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| 作者姓名： | 陈素芝 李英 |
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| 作者单位： | 江南大学,通信与控制工程学院,江苏,无锡,214122 |
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| 摘 要： | 阐述了一种改进的LMS算法并应用于自适应噪声对消．新算法利用误差信号的相关值调节算法步长，解决了收敛时间和稳态误差的矛盾，并且不受已经存在的不相关噪声的干扰．对该算法的收敛性和稳定性进行了分析，仿真表明该算法优于固定步长的LMS算法和VSSLMS(variable step size)算法．
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| 关 键 词： | LMS算法 变步长 均方误差 自适应滤波 |
| 文章编号： | 1671-7147(2004)06-0583-04 |
A New Variable Step-Size LMS Algorithm and Its Application in Adaptive Noise Cancellation |
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| CHEN Su-zhi,LI Ying.A New Variable Step-Size LMS Algorithm and Its Application in Adaptive Noise Cancellation[J].Journal of Southern Yangtze University:Natural Science Edition,2004,3(6):583-586. |
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| Authors: | CHEN Su-zhi LI Ying |
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| Abstract: | This paper introduce a modified LMS algorithm which is suitable for adaptive noise cancellation. Utilizing the correlation characteristic of output error signal with previous iteration error signal, the algorithm can efficiently adjust the step size while maintaining the immunity against uncorrelated noise disturbances, eliminating the trade-off between the rate of convergence and misadjustment. Through analysis and simulation, the results obtained show that superior performance can be achieved compared with that of FSSLMS(fixed step-size)algorithm and the existing VSSLMS(variable step size) algorithm. |
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| Keywords: | LMS algorithm variable step-size MSE adaptive filter |
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