ask.m

matlab通信仿真

% 2ASK调制

clear
f=0.01;

for i=1:10
    a(i)=rand;
    if a(i)>=0.5
        a(i)=1;
    else
        a(i)=0;
    end
end

for i=1:length(a)
    for j=1:100
        b((i-1)*100+j)=a(i);
    end
end

for i=1:length(a)
    for j=1:100
        c((i-1)*100+j)=a(i)*sin(4*pi*f*j);
    end
end

subplot(2,1,1);
plot(b,'linewidth',3);
axis([0 1000 -0.1 1.1]);

subplot(2,1,2);
plot(c,'linewidth',3);
axis([0 1000 -1 1]);