You'll have to attach the flowgraph.
On Wed, Apr 30, 2014 at 7:22 AM, zielalaoui <[email protected]> wrote: > Hi all, > I am trying to build transmission on air by using USRPs N210. The > transmission is good with MPSK modulations but when i try to use 16_QAM i > could not receive data (0 bytes at the reception). I tried to adapte > transmission power, gain at the tranmitter, gain at receiver, samp_rate but > the reception file still always empty. This is my flow graph: > Tx: file source => packet encoder => QAM mod => mult constant = 0.4 => UHD > usrp sink > Rx : UHD usrp source => QAM demod => packet decoder => file sink > samp_rate= 2M > samples/symbol = 8 > centre frequency=2.4G > Any proposition will be appreciate > Thanks to all > > > > -- > View this message in context: > http://gnuradio.4.n7.nabble.com/On-air-16-QAM-transmission-problem-with-USRP-N210-tp47871.html > Sent from the GnuRadio mailing list archive at Nabble.com. > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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