eye_diagram_visualization.m

File contents

load eye_data

t0 = T*fs; % Number of samples per period


grid on;

clf;


t = [0:length(z_nrz)-1]/t0;
c = cos(2*pi*t);
s = sin(2*pi*t);
Znrz = reshape(z_nrz(t0/2+1:end-t0/2),t0,(length(z_nrz)-t0)/t0);
subplot(211);plot(t(1:40*t0),z_nrz(1:40*t0)); grid on;
hold on;
plot(t(1:t0:40*t0),z_nrz(1:t0:40*t0),'or');
hold off;
xlabel('Time (sec)');
title('Matched Filter Output (Samples in Red Circles)');
subplot(223);plot(t(1:t0)-T/2,Znrz); grid on;
title('Eye Diagram');
xlabel('Time (sec)');
subplot(224);plot3(c(1:40*t0),s(1:40*t0),z_nrz(1:40*t0)); grid on;
title('Cylindrical Eye Diagram');

print -djpeg95 -r75 eye_stuff_nrz.jpg

t = [0:length(z_rtrc)-1]/t0;
c = cos(2*pi*t);
s = sin(2*pi*t);
Zrtrc = reshape(z_rtrc(t0/2+1:end-t0/2),t0,(length(z_rtrc)-t0)/t0);
subplot(211);plot(t(1:40*t0),z_rtrc(1:40*t0)); grid on;
hold on;
plot(t(1:t0:40*t0),z_rtrc(1:t0:40*t0),'or');
hold off;
xlabel('Time (sec)');
title('Matched Filter Output (Samples in Red Circles)');
subplot(223);plot(t(1:t0)-T/2,Zrtrc); grid on;
title('Eye Diagram');
xlabel('Time (sec)');
subplot(224);plot3(c(1:40*t0),s(1:40*t0),z_rtrc(1:40*t0)); grid on;
title('Cylindrical Eye Diagram');

print -djpeg95 -r75 eye_stuff_rtrc.jpg