Hi Samuel! I haven't solved it yet. I tried to set center frequency with a slider to vary a little bit the frequency of the receiver, but it didn't work. Have you solved the problem?
Thanks! Vivian Triana 2012/4/19 Samuel Ibarra <[email protected]> > Hello Vivian, > > I have also had this problem, but I haven't being able to solve it. Could > you please let me know if your able to solve it? I would greatly appreciate > your help. > > Sam > > On Thu, Apr 19, 2012 at 7:41 AM, Vivian Paola Triana Galeano < > [email protected]> wrote: > >> I'm using non-differential modulation. But I used differential before and >> it didn't work neither. I think my problem is with the sample rate that I >> have to set in UHD_USRP Sink and Source Blocks. I try to send a wav file >> that has maximum frequency of 12kHz so I set the sample rate at 28kHz, >> however it didn't. I need understand what the sample rate refers to. >> >> Thansks in advance for helping me! >> >> >> >> 2012/4/19 Tom Rondeau <[email protected]> >> >>> On Wed, Apr 18, 2012 at 11:32 AM, Vivian Paola Triana Galeano >>> <[email protected]> wrote: >>> > I'm working with USRP1 daughterboard RFX 2400 MHz. >>> > The configuration of the parameter in UHD_USRP block is sample rate= >>> 1MHz >>> > Center freq=2.4GHz. >>> >>> Vivian, >>> Are you using differential or non-differential modulation? Over the >>> air, the phase ambiguity at the receiver does not get worked out, so >>> it will only work if you use differentially encoded symbols. >>> >>> Tom >>> >>> >>> > 2012/4/18 Edmar Candeia Gurjao <[email protected]> >>> >> >>> >> Hi Vivian, >>> >> >>> >> give us details about your set up, like what USRP you are using, >>> >> daughterboads and frequency of transmission, >>> >> >>> >> Edmar >>> >> >>> >> 2012/4/18 Vivian Paola Triana Galeano <[email protected]>: >>> >> > >>> >> > I think my problem has something to do with the parameters of the >>> USRP. >>> >> > >>> >> > I try to send a file modulated with BPSK. So I build a graph like >>> this >>> >> > : >>> >> > >>> >> > File source -> Packet Encoder -> PBSK MOD -> PBSK DEMOD -> Packet >>> >> > Decoder -> >>> >> > File sink >>> >> > >>> >> > >>> >> > >>> >> > and i really get the correct output file with thee right >>> constellation. >>> >> > >>> >> > If I put a USRP source and USRP sink into graph, I don't receive >>> >> > anything. >>> >> > I hope anyone can help me. Thanks >>> >> > >>> >> > >>> >> > _______________________________________________ >>> >> > Discuss-gnuradio mailing list >>> >> > [email protected] >>> >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >> > >>> >> >>> >> >>> >> >>> >> -- >>> >> --------------- >>> >> Edmar Candeia Gurjão >>> >> Universidade Federal de Campina Grande. >>> >> 1 574 387 0195 >>> >> http://ecandeia.dee.ufcg.edu.br >>> > >>> > >>> > >>> > _______________________________________________ >>> > Discuss-gnuradio mailing list >>> > [email protected] >>> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> > >>> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >
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