ask4.m

调制识别：基于决策论的通信信号调制识别实现

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function[s] =ask4(d,fb,fc,fs,Ac) 
%clear;d=randint(1,10,4);fb=500;fc=2000;fs=12000;Ac=1;
N=length(d);M=fs/fb;tb=1/fb;tc=1/fc;Nc=M*tc/tb;step=tb/M;
for j = 1:N
	for i = 1:M
		s((j-1)*M+i)=d(j)*Ac*cos(2*pi*(i-1)/Nc);
    end
end