On 01/13/2014 03:31 PM, Marqo Torres wrote: > Hello, I am working on a real time voice Tx/Rx using GNU Radio as software > and a USRP E110. I'm trying to do a QPSK Modulation and I have consulted > several models and forums and it seems everything is okay, however at the > moment of receiving signal, the audio on the receiver is breaking up, and I > want the audio sounds good. I thought it might be because of some errors in > synchronism and carrier recovery, so I added the block MPSK Reciever, > without any changes in the audio output. Is anything I am missing? or Is > any calculation or number wrong? > > Could it be because of lack in processing? because I've tried the same > model with GMSK mod/demod blocks and the voice sounds good. I've attached > the flowgraphs of the Tx and Rx side for a better understanding.
Do you see any O/U's from the flowgraphs? If so which flowgraph? Philip > > I really appreciate your help and I look forward your reply. > Regards. > Marqo > > P.S. I've also read that at the moment of involving blocks that work with > hardware (USRP Sink/Source) I have to skip the Throttle blocks, is that > true? > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
