pdf_phase.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 33 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_thita=pdf_phase(sigma_1_2,sigma_2_2,thita,PLOT)

if nargin==2,
   PLOT=0;
end
a1=sigma_2_2*(cos(thita).*cos(thita));
a2=sigma_1_2*(sin(thita).*sin(thita));
c=a1+a2;
b=sqrt(sigma_1_2*sigma_2_2);
p_thita=b./(2*pi.*c);
if PLOT==1,
  
   plot(thita,p_thita)
   xlabel('angle(rad)')
   ylabel('p(angle)')
end