Salut!
I think our issues are related to the synchronizations parameters (Costa's loop and M&M). It seems that they must be chosen very carefully, especially costas_alpha and gain_mu. In order to choose them, I plugged a constellation sink into my modulator using GRC. As the constellation sink is using synchronisation algorithm, I was able to play with the synchronization parameters and see the consequences on the constellation. I would like to learn more about these two algorithms. Where can I find some interesting reading on the internet? Eg : for a d8psk, with no gray coding I used : alpha= 0.001 and gain_mu=0.005 Axel _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
