Forum: GNU Radio Re: OFDM demodulation problem / example video

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C369ebbe1655201988e376af57460f23?d=identicon&s=25 Achilleas Anastasopoulos (Guest)
on 2006-04-04 22:19
(Received via mailing list)
Jens,

I looked at your code and
I don't know if this makes a difference,
but I think the line
data = d_resamp(256:1792)
should be substituted by
data = d_resamp(257:1793)
since in an N=2m point FFT the DC is the m+1-st component
after fftshift (in our case it is the 1025-th component).

I still believe that ftaer correct frequency compensation the
picture should look like an unrotated QPSK, so my bet
is that there is something wrong with the frequency correction...

Achilleas
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