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大小: 8KB文件类型: .zip金币: 2下载: 1 次发布日期: 2021-11-07
- 语言: Matlab
- 标签: Beamforming Adaptive Fil Nonlinear_Ad
资源简介
经典beamforming、自适应滤波教材matlab源代码。 Paulo S.R. Diniz编著的自适应滤波第四版(Adaptive Filtering_Algorithms and Practical Implementation 4th),源代码——Nonlinear_Adaptive_Filters
代码片段和文件信息
% Bilinear_RLS.m
% Implements the Bilinear RLS algorithm for REAL valued data.
% (Algorithm 11.3 - book: Adaptive Filtering: Algorithms and Practical
% Implementation Diniz)
%
% Input parameters:
% Nr : members of ensemble.
% dim : iterations.
% Sx : standard deviation of input.
% Sn : standard deviation of measurement noise.
% lambda : exponential weighting factor.
%
% Output parameters:
% MSE : mean-square error.
%
% Authors:
% . Guilherme de Oliveira Pinto - guilhermepinto7@gmail.com & guilherme@lps.ufrj.br
% . Markus Vinícius Santos Lima - mvsl20@gmailcom & markus@lps.ufrj.br
% . Wallace Alves Martins - wallace.wam@gmail.com & wallace@lps.ufrj.br
% . Luiz Wagner Pereira Biscainho - cpneqs@gmail.com & wagner@lps.ufrj.br
% . Paulo Sergio Ramirez Diniz - diniz@lps.ufrj.br
%
clear all; % clear memory
% Input:
Nr = 100;
dim = 5e2;
Sx = 1;
Sn = 1e-1;
lambda = 0.98;
% Body:
for j=1:Nr
n=Sn*randn(dim1); % noise at system output
x=Sx*(randn(dim1)); % input signal
xl(1)=0; xl(2:dim)=x(1:dim-1);
w=zeros(4dim); % initial coefficient vector
d=zeros(dim1);
yl(1)=0; dl(1)=0;
Sd=eye(4);
for i=1:dim
d(i)=-.6*dl(i)+x(i)+.01*x(i)*dl(i)+.02*xl(i)*dl(i)+n(i); % unknown system output sample
uxl(:i)=[x(i) dl(i) x(i)*dl(i) xl(i)*dl(i)]‘; % new input vector
elinha(i)=d(i)-w(:i)‘*uxl(:i)+n(i); % error sample
psi=Sd*uxl(:i);
Sd=(1/lambda)*(Sd-(psi*psi‘)/(lambda+psi‘*uxl(:i)));
w(:i+1)=w(:i)+elinha(i)*Sd*uxl(:i); % new coefficient vector
y(i)=w(:i+1)‘*uxl(:i); % output sample
yl(i+1)=yl(i);
dl(i+1)=d(i);
e(i)=d(i)-y(i)+n(i);
end
mse(j:)=e.^2;
end
MSE=mean(mse);
% Output:
figure
plot(10*log10(MSE));
title(‘Learning Curve for MSE‘);
xlabel(‘Number of iterations k‘); ylabel(‘MSE [dB]‘);
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2019-01-11 14:50 Nonlinear_Adaptive_Filters\
文件 2133 2011-01-04 08:53 Nonlinear_Adaptive_Filters\Bilinear_RLS.m
文件 2803 2011-01-04 08:54 Nonlinear_Adaptive_Filters\Complex_Radial_Basis_Function.m
文件 2615 2011-01-04 08:54 Nonlinear_Adaptive_Filters\Multil
文件 2637 2011-01-04 08:54 Nonlinear_Adaptive_Filters\Radial_Basis_Function.m
文件 2089 2011-01-04 08:54 Nonlinear_Adaptive_Filters\Volterra_LMS.m
文件 2106 2011-01-04 08:54 Nonlinear_Adaptive_Filters\Volterra_RLS.m
文件 134 2010-12-12 04:22 Nonlinear_Adaptive_Filters\sgd.m
文件 108 2010-12-12 04:22 Nonlinear_Adaptive_Filters\sgm.m
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