I got problems in running gnuradio-examples when I tested the USRP
Example 1) OFDM_Tx&Rx
By the time so far, I have several different kinds of outcomes by
attampts even I tried with the same command. It seems that it never has
“stable” same outcome. The problems I have met so far include the
(these are different experiences that I have had when running the tests
-1, One of the USRPs always can not receive, even though I attempt to
power cycled it or stop receiving and restart again without power
labled it as a “Problem” one.
-2, Both USRPs can transmitting and receiving for a short time(around
2mins), and then one USRP(the same “problem” one as mentioned in result
failed to receive while the other one was still transmitting. The failed
could not get recovered, even though I attempted to power cycled it or
receiving and restart again without power cycling.
There’s a similar case that if I stoped receiving of the
USRP and restart receiving again without power cycling . The “problem”
could receive for the first two or three times, but after I attamped to
restart receving for the fourth time(for example). The “Problem” USRP
not receive packges.
-3, Yesterday morning before lunch time,both USRPs can miraculously
transmitting and receiving for a relatively long time(around 10-15mins)
without any part of them failed (transmitting and receiving in both
direction). While after coming back from lunch, however, the problem
out again exactly same as the first one above. (i.e. transmitting and
receiving only in one direction).
Example 2) non-OFDM example (under
-1, Yesterday, there’s no problems if I kept on transmitting from one
the other without switching the tx&rx parts. If I stoped receiving and
restarted to receive without power cycling, the receiver would keep on
-2, The problem will come out after I switched the TX and RX role of
USRPs. I had to power cycle the USRP which is going to receive,
it will not work. (Actually, both USRPs exhibit problems depending on
one is the receiver and this USRP has to be power cycled in order to
Above are my test results. I was wondering if it might be concluded as
hardware problems. If you have any comments or ideas, please let me
Thanks in advance!