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can the output of QAM be given directly to IFFT ?

Started by jahn...@yahoo.co.in December 26, 2006
I am doing a project regarding OFDM.I used 64 QAM to modulate the data . The output of QAM is complex.
Can the complex output be given directly to perform IFFT ?
Yes.

j...@yahoo.co.in wrote: I am doing a project regarding OFDM.I used 64 QAM to modulate the data . The output of QAM is complex.
Can the complex output be given directly to perform IFFT ?

Amit Pathania
Jahnavi-

> I am doing a project regarding OFDM.I used 64 QAM to modulate the data .
> The output of QAM is complex.
> Can the complex output be given directly to perform IFFT ?

If this is transmission side, then yes. Be careful to choose iFFT size depending on
number of subchannels. Here is a good description (sorry not MATLAB):

http://zone.ni.com/devzone/cda/ph/p/id/150

-Jeff