Forum: GNU Radio USRP DBPSK Demod/Mod Issue

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D0c737d44427db17d8215ab3787641fd?d=identicon&s=25 Shae Hurst (Guest)
on 2013-06-04 02:09
(Received via mailing list)
Hello,

We are working on our senior design project using gnuradio and USRP
N210. We are connecting two USRP's together through a coax cable with a
30 dB attenuator and each USRP is connected to a host computer via a
gigabit ethernet connection.

Right now we are trying to modulate and demodulate a packet consisting
only of "1's and 0's" from a file generated with the gnuradio file sink.
We are seeing strange fluctuation at the output of our USRP receiver. We
have attached a link to pictures of our GRC blocks and our source code
as well as the gr_plot screenshots documenting the received signal.

https://www.dropbox.com/s/r5eob2180dzksf1/USRP_TX_...

Thanks,
Symbol
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