The Effect of HPA over OFDM systems HELP!!

[Osbamail]

Dear all
searching through google all the ways lead to you,
i hope i can find what i need here

am trying to implement a OFDM system with the following criteria :
Generate random data
then after the usual OFDM steps (modulation, fft , etc..) pass the data through any kind of HPA (SSPA, TWTA ,.. etc)

to study the effect of the HPA non - linearity on the generated signals , then compare the the results using BER and spectral Density graphs..

If any One have any thing related to the subject that can be an assist i will be more than grateful

waiting for all the kind edaboarders there

 

[RCinFLA]

Just make sure you create a modulation/carriers test modulation that gives worse case high end peak to average power ratio.

 

[Osbamail]

thanx alot but am not studying the effect in relation with PAPR , i just need the way to plot the BER using different modulation method especially (64-QAM). and relatively plot the PSD.