> We tried to introduce a channel model instead of the USRPs in our system, > and we think that the problem is in the frequency offset. When frequency > offset of the channel model is zero, everything is safe. When it is > increased a little, the scope displays nothing. > > If you really think that the problem is in the frequency offset, please let > us know how to combat that problem! >
Have you observed the received spectrum? Is there an offset? http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#I-have-two-USRPs-and-when-I-transmit-on-one-and-receive-on-the-other-at-the-same-frequency-I-get-an-offset Also, you can just increase the symbol rate. So, despite the frequency shift, your signal still makes it into the demodulator's passband. -Josh _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
