Hmm: I have a working program which has a USRP perform TX & RX on the one radio, using transmit_path & receive_path. With two USRPs I can do RTS/CTS and transmit a packet with ACK. My receive_path was not picking up its own transmit_path's packet transmissions erroneously. This was even though both flowgraphs were running (in parallel) at the same time.
I only became aware of the problem that my RX should be picking up the TX from the same radio after reading Crohas's paper. My RX doesn't pick up my TX though (I never get "packet has wrong address" - I only sometimes get bad packets due likely to noise interference). I did have problems before when I didn't have real time scheduling: in that case my receiver was not able to receive anything. So um what's going on in gnuradio. According to Crohas my RX should be picking up TX from my own radio, but it's not. Does USRP only allow one RX or TX operation at the same time or what? (I have tried with -R -T on the same antenna, and -R -T on different antennaes). Or is it something to do with scheduling??? I am very confused. My program is working but it shouldn't be working according to the literature. Is there good documentation in this area? Are there other implementations of TX/RX on the same USRP? If so they should have encountered the same problem of erroneous self-pickup, and found some way to deal with it. -- Posted via http://www.ruby-forum.com/. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
