?? qpsk_system_ber_simulation.m
字號(hào):
% QPSK System Simulation, Pe evaluation
echo on
SNRindB1=0:2:6;
SNRindB2=0:0.1:6;
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;
disp([ps,pb]);
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)=0.5*erfc(sqrt(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);
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