Ploting Rayleigh faded signal copies

Question

Ali Sabra 2019-10-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/487003-ploting-rayleigh-faded-signal-copies

回答： Daniel M 2019-10-23

Hello everyone, I am looking for a way to sum a Rayleigh faded sine wave with its delayed Rayleigh faded version. I am trying to plot them in figure and to plot the original signal in another one to see the difference. I want to plot both of them versus time not only the original signal as in the figure.

c1 = rayleighchan(1/1600,100);
%c1.PathDelays = [0 1e-6];
%%Time specifications:
   Fs = 1600;                   % samples per second
   dt = 1/Fs;                   % seconds per sample
   StopTime = 62.5;             % seconds
   t = (0:dt:StopTime-dt)';     % seconds
   %Sine wave
   Fc = 1;                     % hertz
   sin = cos(2*pi*Fc*t);
   % Plot the signal versus time:
   figure (6);
   %subplot (2,2,1)
   %plot(t,sin);
   %xlabel('time (in seconds)');
  % title('Signal versus Time');
  % zoom xon;
   %subplot(2,2,2)
  sin1 =  filter (c1,sin);
  % plot  (t,10*log10 (abs(sin1)));
  %subplot(2,2,3)
   plot  (t,sin1);
    xlabel('time (in seconds)');
   title('Signal versus Time');
 
      % now shift the signal in time by zeropadding at the beginning:
   tau = 802*dt;
   y = [  tau  ;   sin1     ];
   % Also, let's zeropad x at the end so that it has the same length as y:
   sin1 = [   sin1   ;   tau   ];
   % Create a simple time domain:
   n = (1:size(z,1))';
     z = sin1 + y;
   % plot both signals:   
   figure(2);
   plot(n,z,'r');
   legend('z');

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Answer 1

Daniel M 2019-10-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/487003-ploting-rayleigh-faded-signal-copies#answer_397905

在 MATLAB Online 中打开

figure
plot(t,real(sin1))
hold on
plot(t,imag(sin1))
xlabel('Time')

Or, using subplot

figure
subplot(2,1,1)
plot(t,real(sin1))
title('title for subplot1')
xlabel('xlabel for subplot 1')
subplot(2,1,2)
plot(t,imag(sin1))
title('title for subplot 2') % etc...