run_paths.m

用MATLAB对ofdm系统的性能仿真

clc;clear all;
fprintf( '\n OFDM仿真\n \n') ;
N=11;
ber_value1=zeros(1,N);
ber_value2=zeros(1,N);
ber_value3=zeros(1,N);
ber_value4=zeros(1,N);
for ii=1:N
   SNR=ii-1;   path1;    ber_value1(ii)=bit_error_rate;
   SNR=ii-1;   path2;    ber_value2(ii)=bit_error_rate;
   %SNR=ii-1;   path3;   ber_value3(ii)=bit_error_rate;
   SNR=ii-1;   path4;    ber_value4(ii)=bit_error_rate;
end
semilogy([0:N-1],ber_value1,'o-',[0:N-1],ber_value2,'*-',[0:N-1],ber_value4,'v-')%,[0:N-1],ber_value4,'square-') 
grid on
title('误码率曲线');
xlabel('SNR(db)');
ylabel('BER');