m06_scatter.m

matlab的经典讲义

M = 16; Fd = 1; Fs = 10;
Pd = 200; % 
msg_d = randint(Pd,1,M); %生成随机信号 
msg_a = modmap(msg_d,Fd,Fs,'qask',M);%采用QASK调制方式.
rcv = rcosflt(msg_a,Fd,Fs);
N = Fs/Fd;
rcv_a = rcv(3*N+1:end-4*N,:);
h = scatterplot(rcv_a,N,0,'bx');%绘制散布图