On Jun 17, 10:41*am, priya <kaushik.priya...@gmail.com> wrote:
> Hi all,
> I have just started reading about the OFDM systems .I have read in
> some paper that zero padding is advantageous over Cyclic prefix
> approach.
> In most of the systems i have found Cyclic prefix there not zero
> padding.

True. The padding is in time domain.

> ONe more thing ,in a particular system 64 pt IFFT/FFT was taken .in
> which 52 were carriers(48 data + 4 pilots) rest were zeros.
> and 16 CP.
> Is there any advantage of using 12 zeros?

This padding is different from the previous one as this padding is in
frequency domain. If you do not pad zeros, what else could you pad?

> I could not find any reference for the same if any paper is there
> please send me the one.
> All i could make out is that it may reduce the PAPR.
>
> With regards
> pria