Hi Alex,
VisSim/Comm can do it.
You can download a free 2 month trial here: 
http://www.vissim.com/downloads/demos.html
Regards,
Jim
---------
"alexgiul" <alexgiul@hotmail.com> wrote in message 
news:EJednb1FF_0AGevbnZ2dnUVZ_ompnZ2d@giganews.com...
> Hi to everybody,
> I'm a new user of this forum;
> I'm trying to realize a model in simulink with I can simulate an ofdm
> trasmitter and receiver.
> I have seen the model proposed from mathwork and I want to insert the
> effect of a channel and not only the noise;
>
> Has anybody any information about this task?
>
> Thanks, AlexGiul
>
> 

Hi Julius,

finally I find a clear idea of my goals and I succefully design a complete
simulator with simulink of a DVB-T trasmitter: the main caracteristics are
the possibility of insert channels, doppler shift and the carrier
frequnecy offset.

If you are interested, I can explain you how I have done it.

Now, the next goal is the estimation of carrier frequency offset.

I found a lot of technical papers on internet (IEEE) but I haven't yet 

found a final solution.

Can you help me?

GoodBye, AlexGiul

On Jun 18, 8:11 am, "alexgiul" <alexg...@hotmail.com> wrote:
> Hi to everybody,
> I'm a new user of this forum;
> I'm trying to realize a model in simulink with I can simulate an ofdm
> trasmitter and receiver.
> I have seen the model proposed from mathwork and I want to insert the
> effect of a channel and not only the noise;
>
> Has anybody any information about this task?
>
> Thanks, AlexGiul

This is a question that is hard to answer without a clear scope to
your resources / goals / specs.

If you already have a linear, time-invariant channel, then modeling
its
effect on a simple  'dumb' OFDM is easy.  Just convolve the time-
domain
transmitted signal with the channel, and voila.  Make sure that the
sampling
rates match, etc.

But if you don't have the channel itself, then the task becomes more
complicated since now you have to generate the channel (or channels)
according to some spec/description.

If you want the OFDM receiver to be 'smart' and do channel estimation
and/or
compensation, it's even more complicated.

So how ambitious are you?

Julius

Hi to everybody,
I'm a new user of this forum;
I'm trying to realize a model in simulink with I can simulate an ofdm
trasmitter and receiver.
I have seen the model proposed from mathwork and I want to insert the
effect of a channel and not only the noise;

Has anybody any information about this task?

Thanks, AlexGiul