On Wed, Apr 30, 2014 at 10:58 AM, zielalaoui <z.i.elala...@gmail.com> wrote:
> Hi all, > For synchronization I did not add blocks because the QAM.py calls > synchronization blocks from generic_mod file which already contains AGC, > fll, polyphase clock synk, ... I thought that those bolcks are doing the > job. So i just think to add FEC block because it is not a part of my > flow-graph. Do you thinks that i should add synchronization block even it > exists in QAM demod block? or just try to find the best parameters of > timing, frequency, and phase in de QAM_demo block? > Thanks a lot for help. > Yes, synchronization for QAM is difficult and not extremely well-tested in GNU Radio. Have you done this in simulation, yet? That is, make a GRC example with the transmitter and receiver and the add a channel model block to see what happens? Definitely start there before getting ahead of yourself and adding the complexities of the real world. Tom
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