HiperMAN Standard/OFDM

I recently started simulating a HiperMAN/WiMAX PHY on MATLAB. However, in
the  
standard available in the ETSI website, there is mention of a "sampling
frequency" and a term "bandwidth over sampling frequency". I haven't a clue
as to what these terms mean and where they're used in the OFDM process.
Could somebody shed some light on what these terms mean in the context of
OFDM?

Thanks 
Neelabh

On Aug 10, 6:17&#4294967295;am, "Neelabh" <neela...@yahoo.co.in> wrote:
> I recently started simulating a HiperMAN/WiMAX PHY on MATLAB. However, in
> the &#4294967295;
> standard available in the ETSI website, there is mention of a "sampling
> frequency" and a term "bandwidth over sampling frequency". I haven't a clue
> as to what these terms mean and where they're used in the OFDM process.
> Could somebody shed some light on what these terms mean in the context of
> OFDM?
>
> Thanks
> Neelabh

If it's expressed in radians, maybe it's the discrete-time frequency
normalized to the sampling rate?