mineig.m

来自「该程序对ofdm系统中mmsnr的信道缩短算法的误码率性率进行了仿真」· M 代码 · 共 22 行

%MINEIG Minimum eigenvalue and the corresponding eigenvector.
% [L, Q] = MINEIG(A) returns the minimum eigenvalue L and the
% corresponding eigenvector Q of the square matrix A. Minimum is 
% in the sense of absolute value if complex eigenvalues exist.
%
% [L, Q] = MINEIG(A, B) returns the minimum generalized eigenvalue
% (返回矩阵A的最小特征值以及与其对应的特征向量）
% L and the corresponding generalized eigenvector Q of the square
% matrix A. Minimum is in the sense of absolute value if complex eigenvalues exist.

function [l, q]=mineig(varargin);


  [v, d]=eig(varargin{1});	 % D是输入矩阵的特征值构成的对角矩阵
  
% find the minimum eigenvalue and the index to it
[l, index]=min(abs(diag(d)));					
% this is the corresponding eigenvector
q = real(v(:,index));