gusucode.com > 现代通信系统——使用MATLAB(+全部程序) > 现代通信系统——使用MATLAB(+全部程序)/现代通信系统——使用MATLAB(+全部程序)/Matlab 程序/Chapter7/ip_07_03.m
% MATLAB script for Illustrative Problem 7.3. echo on SNRindB1=0:2:10; SNRindB2=0:0.1:10; for i=1:length(SNRindB1), [pb,ps]=cm_sm32(SNRindB1(i)); % simulated bit and symbol error rates smld_bit_err_prb(i)=pb; smld_symbol_err_prb(i)=ps; echo off ; end; echo on; for i=1:length(SNRindB2), SNR=exp(SNRindB2(i)*log(10)/10); % signal-to-noise ratio theo_err_prb(i)=Qfunct(sqrt(2*SNR)); % theoretical bit-error rate echo off ; end; echo on ; % Plotting commands follow semilogy(SNRindB1,smld_bit_err_prb,'*'); hold semilogy(SNRindB1,smld_symbol_err_prb,'o'); semilogy(SNRindB2,theo_err_prb);