[matlab] general function of communication signal modulation inverse Fourier transform

Catalog

Inverse Fourier transform

---

Inverse Fourier transform

function [t,st] = F2T(f,sf)
%This function calculate the time signal using ifft function for the input signal's spectrum
df = f(2)-f(1);
Fmx = (f(end)-f(1)+df);
dt = 1/Fmx;
N = length(sf);
T = dt*N;
t = 0:dt:(T-dt);
sff = ifftshift(sf);
st = Fmx*ifft(sff);