Am 25.01.10 04:20 schrieb "Yanjun Wu" unter <yanjun...@gmail.com>:
> Do you use any daughterboard sold by Ettus? > I'm also interested in 802.11p, but I'm not sure whether USRP2 plug XCVR2450 > are appropriate for 802.11p 5.9GHz test. > Yes, we are using the XCVR2450 in the 5.9GHz band, so far without any big problems. We do seem to have a little issue, that was discovered just yesterday: Using a second USRP2 to record the received baseband signal we see that each sent frame is directly followed by a delayed and attenuated (around 25dB) copy of it. This "artifact" is definitely not contained in the digital baseband data that we generate on the transmitter-side, so it must be introduced by the USRP2/Daughterboard system. Also these copies are not seen when looking at the signals from another source - so they are not measurement artifacts either. I currently busy trying to find out more... Cheers paul _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
