Indeed, don't use a throttle block for anything other than a simulation not involving hardware.
What sample-rate are you using, and are you getting overrun or underrun indications ('O' or 'U' printed).
on Jan 13, 2014, Marqo Torres <[email protected]> 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.I really appreciate your help and I look forward your reply.Regards.MarqoP.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?
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