mp2_fig.m

调制识别：基于决策论的通信信号调制识别实现

clear;fb=500;fc=2000;fs=12000;Ac=1;
for i=1:30
    for k=1:100
    d4=randint(1,300,4);d8=randint(1,300,8);
    s4=psk4(d4,fb,fc,fs,Ac);s5=psk8(d8,fb,fc,fs,Ac);
    ss4=awgn(s4,i,'measured');ss5=awgn(s5,i,'measured');
    Map24(k)=Mp2_func(ss4,fs,fc);Map25(k)=Mp2_func(ss5,fs,fc);
    end
    Mp24(i)=mean(Map24);Mp25(i)=mean(Map25);
end
plot(Mp24,'-*');hold on;
plot(Mp25,'-^')
xlabel('snr');ylabel('Mp2');
grid
legend('psk4','psk8',0);