On 02.05.2014 16:59, zielalaoui wrote:
Hi to all,
I resolved my problem and I want to share the solution
The problem was the amplitude in the QAM demod block input. I checked the
constellation in the transmitter directly before UHD usrp block for being
sure the the constellation points are good depending on the samples/symbol
value (8 worked good). After that i just try to adapte the amplitude signal
in reception by adding gain for to have the same signal which i had in my
QAM simulation. Like that the transmission worked good.
Zakaria
Zakaria,
generally, your equalizer should be taking care of that. Adjusting gain
is an unreliable method, since the actual attenuation of your signal
over-the-air is a function of many things.
But nice that your experiment is working!
Martin
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