plot_awgn.m

这是个扩频仿真的有关程序

clc;
clear;
tic
SNRindB1=0:2:8;
SNRindB2=0:0.1:10;
% M=4;
% k=log2(M);
for i=1:length(SNRindB1)
    snr_tem=SNRindB1(i)-10*log10(15);
    smld_err_prb(i)=awgn_cdma_pe(snr_tem)
end
for i=1:length(SNRindB2)
    SNR=exp(SNRindB2(i)*log(10)/10);
    theo_err_prb(i)=Qfunct(sqrt(2*SNR));
end;

semilogy(SNRindB1,smld_err_prb,'-g^');
hold;
semilogy(SNRindB2,theo_err_prb);
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