A USRP doesn't work at 15k S/s, and your audio sink probably doesn't
work at 120k. On the TX side you have 2 different blocking sinks (audio
and USRP) which can mess things up. Not sure about the rest of it. It
seems like there might be some filtering and oversampling missing.
On 05/10/2018 12:52 PM, JONNY LEYIKUN wrote:
Dear All
I try to transmit Audio File using QPSK modulation and Raised cosine
waveform on GNU radio platform
I can transmit a clear audio file, constellation sink, and amplitude
graph. but when I try to receive using another Laptop the USRP cannot
receive the transmit signal so I cannot hear the audio file
see the file here and please help me if I made a mistake
1.even The USRP transmitter give red light and also the USRP receiver
side gives the green light but I don't know why
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