From: Tom Rondeau <address@hidden>
To: Jon Watson <address@hidden>
Cc: "address@hidden" <address@hidden>
Sent: Saturday, March 31, 2012 9:34 AM
Subject: Re: [Discuss-gnuradio] dbpsk on gnuradio-3.5 and Ubuntu 11.10
Jon,
I'm not sure why this would change between 3.4 and 3.5, but my guess
is that it's something to do with the frequency offset, which tends to
be the biggest problem with these things. I've attached a GRC example
that runs what you want in a loopback simulation (you need gr-qtgui
installed for this). It looks good here, but I haven't tried going
over the air. This was just to make sure the data and everything were
passing through the algorithm blocks correctly.
Try figuring out what the frequency difference is
between your two
USRPs (to about 100 Hz or so) and correct either the transmitter or
receiver to more closely match them up.
Also, when you were using 3.4, were you using UHD or libusrp(2)?
Tom