pdf_sim.m

来自「无线移动信道的matlab源码 用于对无线通信信道的编程实现」· M 代码 · 共 31 行

%--------------------------------------------------------------------
% pdf_sim.m ---------------------------------------------------------
%
% Program for the computation of probability density functions p(z).
%
%--------------------------------------------------------------------
% p_z=pdf_sim(xi_t,z,PLOT)
%--------------------------------------------------------------------
% Explanation of the input parameters:
%
% xi_t: deterministic process or time-domain signal to be analysed 
%       with respect to the probability density function p(z).
% z: equidistant level vector
% PLOT: plot of the resulting probability density function p(z), 
%       if PLOT==1

function p_z=pdf_sim(xi_t,z,PLOT)

if nargin==2,
   PLOT=0;
end

p_z=hist(xi_t,z)/length(xi_t)/abs(z(2)-z(1));

if PLOT==1,
  
   plot(z,p_z)
   xlabel('z')
   ylabel('p(z)')
end