Thanks for the reply! If I use one computer, I would even combine and stream them to the same USRP antenna. What I wanted to have is two independent transmitters ( primary and secondary) transmitting over the same channel. The secondary (cognitive) transmitter will have to synchronize to the primary transmission so that it can encode its message (eg. dirty-paper coding) to mitigate the interference.
Regards! On Fri, Jan 27, 2012 at 8:16 PM, André Selva <[email protected]> wrote: > What I think that might be a solution is using only one computer with two > USRPs. In the flowgraph, you will have two sinks. If your network card are > both identical and the distance between the USRPs are not large enough to > be considered, I don't see why the signals would not be syncrhonized (or, > at least, very similar to each other). > > Att, > > 2012/1/22 yend B. <[email protected]> > >> I was wondering if there is a way to syncrhonize two transmitters >> running on two machines. >> Both transmitter use OFDM. I could use a shared reference clock, but the >> problem is that >> I don't know how exactly I can send packets SIMULTANEOUSLY from both >> transmitters. >> I want to measure co-channel interference and study multiuser detection >> alogorithms. >> >> Regards! >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > > -- > André F. B. Selva - > SECOMP - Semana da Computação da Unicamp 2012 > Coordenador Geral > CACo - Centro Acadêmico da Computação > >
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