Transmitting 2 dbpsk signals

Hello everyone,

I am trying to transmit simultaneously from two USRPs using
‘’ to a third one acting as a relay with
‘’ running. Do the python scripts on the receiver’s end
such as ‘’ use the access codes to determine which type of
modulation scheme the transmitters are running or is there a different
method in determining which type of mod scheme is used?

Also, when the two signals from the transmitting USRPs are sent to the
relay USRP, are the two signal phases automatically aligned or is this
done somewhere else in the [‘’ or ‘’, etc.] files?

Thanks in advance!