Hi Luis, I hope you're using an attenuator with a cable or antennas in your feedback, not to risk damaging your receiver!
What you need to do to get a similar constellation is the whole dance that is taught in your average digital communication basics lecture: Synchronization in time, and phase (and theoretically frequency, but when it's really only a loopback, that's not an issue, since they will be identical), an equalizer if your channel leads to ISI, and potentially phase tracking, as well as usually some sort of pulse shaping filter etc. Best regards, Marcus On Thu, 2018-06-14 at 10:59 +0200, Luis Felipe Albarracin Sanchez wrote: > Hello all, > > I am trying to do a Loopback with an USRP B210, ad i have the following > flowgraph: > > > > > > For mi test i need to obtain a similar constellation once i received the > signal, but i am getting: > > > > > My question is, are there any blocks missing or what else i need to do, to > obtain a similar constellation in the Rx side? > > Once again, thank you very much. > > Kind regards. > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
