[Discuss-gnuradio] Algorithm convergence problem in DBPSK2?

[Feng Andrew Ge]

I did some test on DBPSK2 checked out from gnuradio.git next and 
observed some interesting result.

I set up a transmitter and a receiver, using UHD. Two radios were close 
to to each other (2~3 feet). I set TX and RX gain both as 18dB. When I 
started the transmitter first and then the receiver, I could receive 
data packets correctly; however, when I started the receiver first, most 
time I could not receive data at all and the CPU consumption soared.

There seems to exist some algorithm convergence problem in the second 
scenario.

Andrew