ip_05_08.m

contemporarycommunicatonsystem－using MATLAB经典书目源程序！

% MATLAB script for Illustrated Problem 8, Chapter 5.
 
echo on
SNRindB1=0:1:20;	  		
SNRindB2=0:0.1:20;			
for i=1:length(SNRindB1),
  % simulated error rate 
  smld_err_prb(i)=smldPe58(SNRindB1(i));    
  echo off;
end;
echo on;
for i=1:length(SNRindB2),
  % signal to noise ratio
  SNR_per_bit=exp(SNRindB2(i)*log(10)/10);  
  % theoretical error rate
  theo_err_prb(i)=(3/2)*Qfunct(sqrt((4/5)*SNR_per_bit));  
  echo off;
end;
echo on;
% Plotting commands follow
semilogy(SNRindB1,smld_err_prb,'*');
hold
semilogy(SNRindB2,theo_err_prb,'r');