CCS

Signal Constellation Diagrams for Binary Signals

 

 

 

Matlab Coding

% MATLAB script
echo on
x = [0.1,0.3,0.5];

for i = 1:3
    n0=x(i)*randn(100,1);
    n1=x(i)*randn(100,1);
    n2=x(i)*randn(100,1);
    n3=x(i)*randn(100,1);
    x1=1.+n0;
    y1=n1;
    x2=n2;
    y2=1.+n3;
    subplot(3,1,i);
    plot(x1,y1,'o',x2,y2,'*')
16     xlabel(['sigma = ', num2str(x(i))],'fontsize',10)
    axis('square')
end


 Simulation Result

Reference,

　　1. <<Contemporary Communication System using MATLAB>> - John G. Proakis