matlab编程实现ask、fsk、dpsk

a=[0 0 0 1 1 0 1 0 1 1]; K=length(a) a3=a; a2=a; for j=[2:1:K] if a(j)==a(j-1) a2(j)=0; else a2(j)=1; end end a a=a2; a initial_phase=pi; f1=1; N=200; i=[0:1:N-1]; sin2=sin(2*pi*f1*i/N); sin1=sin(2*pi*f1*i/N+pi); for j=[1:1:K] for i=[1:1:N] yout(N*(j-1)+i)=a(j)*sin1(i)+(1-a(j))*sin2(i); end end sin22=sin2; sin11=sin1; for j=[1:1:K-1] sin22=[sin22 sin2]; sin11=[sin11 sin1]; end a=a3; for j=[1:1:K] for i=[1:1:N] a1(N*(j-1)+i)=a(j); end end figure(1) plot(a1,'--r') hold on plot(yout) grid on