ber vs snr ofdm using fft and ifft
11 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
clc
clear
close all
%1
L=32;
m=(sign(randn(1,L))+1)/2;
%2
symbols = [-1i, -1, 1, 1i];
m2 = reshape(m, 2, []);
idx = m2(1,:) * 2 + m2(2,:) +1;
x = symbols(idx);
%3
S=16;
N=log2(S);
s=ifft(x);
%4
SNR_dB=[0:20];
for i=1:length(SNR_dB)
w(i,:)=sqrt(10.^(-SNR_dB(i)/10));
n=w*(randn(1,S)+1i*randn(1,S));
r=s+n;
x_=fft((r));
m1_=real(x_);
m2_=imag(x_);
end
%
% semilogy(SNR_dB,SER,'-b.');
% title('SER VS SNR')
% xlabel(' SNR(dB) ');
% ylabel(' SER ');
% grid on;
Hey guys, im struggling on the BER VS SNR plot. I have different range of SNR and trying to demapping to original signal. How can I do that? I'm struggling on getting the correct BER.
0 commentaires
Réponses (1)
Roshni Garnayak
le 11 Déc 2019
Refer to the following link for examples and workflows for plotting bit error rate with respect to signal-to-noise ratio:
0 commentaires
Voir également
Catégories
En savoir plus sur OFDM dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!