SINR (OFDM and OFDMA)

Hi there,

I calculate SINR for OFDM system as:

(TP. pathloss.|CG|^2)/(cov + TP_ou. pathloss_ou.|CG_ou|^2)

where, 
TP:    Transmit Power
TP_ou: Transmit Power of other users
CG:    Channel Gain
CG_OU: Channel Gain of other users
cov:   Covariance of AWGN

Then, how can I calculate SINR for OFDMA systems. What will be the effect
of multiple access on SINR?

Thank you!

On 15 Sep., 20:19, "patrick_dbg" <sanindl...@gmail.com> wrote:
> Hi there,
>
> I calculate SINR for OFDM system as:
>
> (TP. pathloss.|CG|^2)/(cov + TP_ou. pathloss_ou.|CG_ou|^2)
>
> where,
> TP: &#4294967295; &#4294967295;Transmit Power
> TP_ou: Transmit Power of other users
> CG: &#4294967295; &#4294967295;Channel Gain
> CG_OU: Channel Gain of other users
> cov: &#4294967295; Covariance of AWGN
>
> Then, how can I calculate SINR for OFDMA systems. What will be the effect
> of multiple access on SINR?
>
> Thank you!

Hi,

If I am not wrong, the multiple access would not necessarily influence
your SINR formula. Infact, ISI and Intercarrier interference and
interference from the other users or base stations can be included in
your OFDM itself. I hope it helps.

Saint