Simulating Doppler Effects for OFDM

Hello,

I would like to simulate the Doppler effects on OFDM. What is the simplest
way to do this in Matlab? I want to simulate ONLY doppler, without any
fading, therefore I dont want to use the rayleigh or ricean channel
function built into matlab. Any help is greatly appreciated.
Thanks
Idan

On Mar 16, 9:48 am, "idan82" <idan.langb...@gmail.com> wrote:
> Hello,
>
> I would like to simulate the Doppler effects on OFDM. What is the simplest
> way to do this in Matlab? I want to simulate ONLY doppler, without any
> fading, therefore I dont want to use the rayleigh or ricean channel
> function built into matlab. Any help is greatly appreciated.
> Thanks
> Idan

What I usually do is FM modulate a baseband carrier with the desired
Doppler track, then multiply it with the signal. This will induce time
varying frequency shift onto the signal. What it won't do is expand/
contract the bauds, but that is a lesser effect.

John