echo on
SNRindB1=0:2:15;
SNRindB2=0:0.1:15;
 for i=1:length(SNRindB1),
  smld_err_prb(i)=cm_sm52(SNRindB1(i));         % simulated error rate
  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)=(1/2)*exp(-SNR/2);		% theoretical symbol error rate
     echo off;
end;
echo on;
% Plotting commands follow
semilogy(SNRindB1,smld_err_prb,'*');
hold
semilogy(SNPindB2,theo_err_prb);