一种变步长的非约束频域LMS自适应滤波算法  

An Unconstrained Frequency Domain LMS Adaptive Algorithm with Variable Step Size

作　　者：何汉翔[1] 欧阳景正 尹俊勋[1] 

机构地区：[1]华南理工大学电子与通信工程系

出　　处：《数据采集与处理》1998年第1期21-23,共3页Journal of Data Acquisition and Processing

摘　　要：基于非约束频域自适应滤波器的结构，本文提出一种变步长自适应算法，即采用最小二乘法选取最优变步长收敛因子，计算机仿真结果表明，该算法比非约束频域ＬＭＳ算法（ＵＦＬＭＳ）具有更快的收敛速度和更好的收敛精度。Based on the structure of the unconstrained frequency domain adaptive filter, a variable step size algorithm is proposed. This algorithm employs a variable step size convergence factor which is optimized in a leastsquares(LS) sense. The computer simulation result shows that it is　superior to the unconstrained frequency domain least mean algorithm(UFLMS) with respect to speed and accuracy of adaptation.

关 键 词：信号处理 最小二乘 LMS 自适应算法 

分 类 号：TN911.7[电子电信—通信与信息系统]