文件名称:
rls与lms算法Matlab程序-RLSnew.m
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上传时间: 2019-08-13
详细说明: rls与lms算法Matlab程序-RLSnew.m %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %RLS自适应滤波器性能分析 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% clear %clc %close all %%%%%%%%%%%%%%参数设置%%%%%%%%%%%%%%%%%%%%%%% w=2.9; forget_factor=0.995; variance_v=0.001; repeat_times=200; iteration_times=2000; filt_len=13; delay=fix-1; %%%%%%%%%%%%%%%%%%%%变量 及数组初始化%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Chan_factor=/w))/2; Square_err=zeros; %%%%%%%%%%%%%外循环,重复做repeat_times次实验,平均值%%%%%%%%%%%%%%%% for loop1=1:repeat_times %%%%%%%%%%%%%%内循环变量及数组初始化%%%%%%%%%%%%%%%%%%%%%%%% Source=zeros; W=zeros; P=eye; Pi=zeros; K=zeros; %%%%%%%%%%%%%内循环,做iteration_times次迭代%%%%%%%%%%%%%%%%%%%%%%%%%%%% for i=1:iteration_times %%%%%%%%%%%%%%信源,产生等概率分布的正负1%%%%%%%%%%%%%%%%%%%%%%%%%%%% if rand<0.5 Source=-1; else Source=1; end end %%%%%%%%%%%%%%信道,滤波和加噪声%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Revdata=filter randn*sqrt; %%%%%%%%%%%%%%均衡器,基于LMS算法%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% for loop2=1:iteration_times-filt_len 1 U=Revdata; d=Source; Pi=P*U; K=Pi/; e=d-W*U; W=W K*e; P=P/forget_factor-K*U*P/forget_factor; Square_err=e.^2; end end %%%%%%%%%%%%%%作图,显示结果%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Square_err_mean=sum)/repeat_times; %semilogy; plot; hold off; %figure; %stem; 运行结果: LMS: Figure18.jpg RLS: Figure19.jpg
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