AF协议DF协议以及无协作的系统误码率仿真分析对比

clc;
 clear;
 close all;xindao_SD=2;
 xindao_SR=1;
 xindao_RD=1.5;
 M =16;   % 10种发射信噪比情况
 R=2;
 SNR_S = zeros(1,M);  % 源发射信噪比数组
 SNR = zeros(1,M);   % 源发射信噪比（dB值）
 Error_wu = zeros(1,M); % 中断概率实验值
 Error_af = zeros(1,M);
 Error_df = zeros(1,M);
 Error_new = zeros(1,M);
 for kk = 1:M
     kk
     SNR(kk) =kk;
     SNR_S(kk) = 10^(SNR(kk)/10);
     Error_wu(kk) = simu_yan(R,SNR_S(kk),xindao_SD); 
      Error_af(kk) = af_simu_yan(R,SNR_S(kk),xindao_SD,xindao_SR,xindao_RD);
       Error_df(kk) = df_simu(R,SNR_S(kk),xindao_SR,xindao_SD,xindao_RD);
       Error_new(kk)= new_simu_yan(R,SNR_S(kk),xindao_SR,xindao_SD);% 调用中断概率实验值求解函数
 end
 semilogy(SNR,Error_wu,'--d');
 hold on
 semilogy(SNR,Error_af,'--*');
 hold on
 semilogy(SNR,Error_df,'--+');
 hold on
 semilogy(SNR,Error_new,'--o');
 xlabel('SNR/dB');
 ylabel('Pr实验值');
 legend('无协作','AF协议','DF协议','改进方法')

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