dmusicex1.m

智能天线中的d music 算法

function dmusicEx1()
% function dmusicEx1()
% 
% 1D Damped MUSIC (DMUSIC) Algorithm Example
% 
% This is the implementation of example 1 from reference [1]
% 
% Ex:
%    dmusicEx1();
% 
% References:
%     [1] Y. Li, J. Razavilar, and K. Liu, "A Super-Resolution Parameter
%         Estimation Algorithm for Multi- Dimensional NMR Spectroscopy," 
%         University of Maryland, College Park, MD 1995.
%
%     [2] E. Yilmaz and E. Dilaveroglu, "A Performance Analysis for DMUSIC,"
%         presented at 5TH International Conference on Electrical and
%         Electronics Engineering (ELECO 2007), Bursa, Turkey, 2007.
%
% Coded by: Kenneth John Faller II January 07, 2008
%
    N = 24;
    J = 12;
    K = 2;
    SNR = 40;
    theta = 0.1;
    s1 = -0.2+j*2*pi*0.42;
    disp(cat(2,'s1: ', num2str(s1)));
    s2 = -0.1+j*2*pi*(0.42+theta);
    disp(cat(2,'s2: ', num2str(s2)));
    
    y = 0;
    for i=1:N+1
        n=i-1;
        y(i) = exp(s1*n) + exp(s2*n);
    end
    
    y = awgn(y,SNR);
    
    dmusic(y,K,J);