add_noise.m

it is a simulation about ML synchronization algorithm in OFDM systems,you can slao see a function pi

function [rx]= add_noise(sn,SNR)
fb=10^5;
fs=10^6;
ebn0=10^(SNR/10);
eb=sum(sn.^2)./(length(sn)*fb);
n0=eb/ebn0;
pn=n0*fs/2;
n=sqrt(pn)*randn(1,length(sn));
rx=sn+n;