Hey
in my university we got for home work this problem:
we got an modulated rectangular pulse (meaning a rect function multiplied by a sine function).
we calculated its fourier transform, lets call it F(w) (meaning the continious time fourier transform - we actually calculated it, not on matlab)
and now this function F(w) is multiplied by exp(-j*K(w)) where K(w) is some function of w... and we need to compute and plot in matlab the Signal in time, meaning calculate the Inverse fourier transform. and they gave us a hint to use the FFT function.
i didn't manage to do it. if i understand correctly the FFT function calculates the DFT. i am familiar with the connection between the FT of a signal and the DTFT of the samples of that signal. and i also know that the DFT is simply sampling the DTFT... but with all that said i don't understand how to make the transition between one and the other on matlab.
i would like to please ask for a general explanation on this topic, and also on how to solve my specific problem where i "start" from the Continious fourier transform and need to get the signal in time.
thank you very much in advance
