untitled1.m

对pam调制的误码率进行理论和仿真对比

clear;
SNR_db=0:12;
SNR1_db=0:0.01:12;
for n=1:length(SNR_db)
    pe(n)=pe_simu(10000,SNR_db(n),1,0);
end;
for m=1:length(SNR1_db)
    Eb_N0=10^(SNR1_db(m)/10);
    pe_theory(m)=erfc(sqrt(Eb_N0/2))/2;
end
semilogy(SNR_db,pe,'*',SNR1_db,pe_theory);
xlabel('信噪比(dB)');
ylabel('误码率(Pe)');
grid on;