Hi Cameron, Yes, this is possible. I'm not too familiar with gnuradio but in the end you need to use a "timed start" to the receive streams. Rob
On Fri, Nov 20, 2020 at 7:34 AM Cameron Matson via USRP-users < usrp-us...@lists.ettus.com> wrote: > Hello all, > > I'm trying to implement a MIMO receiver using the 4 RF chains of the > N310. To test the timing of the system, at the transmitter I'm simply > sending a short pulse from one transmit antenna of one USRP. At the > receiver it looks like there is up to a ~20 ms delay/offset between the > pairs of antennas 0/1 and 2/3 and that this delay changes each time I > restart my GNURadio flowgraph. I can see the delay both in GNURadio GUI > Time Sink and in actual samples that I write to file. I've tried various > pulse widths and sampling rates at both the tx and rx, and it seems > invariant to these. > > I'd really like to be able to synchronize the 4 RF chains in time > simultaneously. Is that possible? > > Thanks > Cameron Matson > _______________________________________________ > USRP-users mailing list > usrp-us...@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
