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From: Peter Simpson on 23 Mar 2010 03:17
It seems that the training symbols have to use the same modulation as
the data symbols. Is there any way that I can use different
modulations? say QPSK for training and 16QAM for data. I tried
equalizing the two parts separately with a constellation change in
between. The shape of the equalized constellation seems correct, but
it is compressed. Of course the demodulation result is wrong.
Thanks
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Prev: channel estimation ofdm
Next: How to rapidly read a Pole-Zero Diagram?