ofdm_system_ber_simulation.m

OFDM通信仿真 可计算OFDM通信误码率、图形显示

% OFDM System Simulation, Pe evaluation
clear;
echo on
SNRindB1=0:4:40;
SNRindB2=0:0.1:40;
%  channel 
for i=1:length(SNRindB1),
    [pb]=ofdm_fing(SNRindB1(i));               
    smld_bit_ray_err_prb_bpsk(i)=pb;
    echo off;
end;
% theory 
for i=1:length(SNRindB2),
    SNR=exp(SNRindB2(i)*log(10)/10);                 
     theo_err_ray_prb(i)=0.5*(1-1/sqrt(1+1/SNR));     
    echo off;
end;
% Plotting commands follow

semilogy(SNRindB2,theo_err_ray_prb);hold on;
semilogy(SNRindB1,smld_bit_ray_err_prb_bpsk,'r*');
xlabel('Eb/No');ylabel('BER');
legend('theory err curve','simulated err curve');
echo off;