hi Marcus, I am attaching the screen shots and also block diagram of transmitter.. right now i am just trying to look for transmission of OFDM signal via usrp1. As i mentioned earlier in the fft scope plot in gnu radio i see the typical ofdm signal but on the other hand in usrp sink on the spectrum analyser i saw only simple sine wave peak. please have a look and let me know if there is something else do i need to do to generate the proper ofdm signal on the spectrum analyser.
/home/hp/Desktop/spectrumoutput.jpeg http://old.nabble.com/file/p32675018/spectrumoutput.jpeg spectrumoutput.jpeg Block diagram in GNU radio /home/hp/Documents/finaltesting.grc http://old.nabble.com/file/p32675018/finaltesting.grc finaltesting.grc Please have a look and suggest me how to fix this problem in order to see the proper ofdm signal on spectrum analyser as well?? Do i need and firm ware update or sumthing on FPGA on usrp1 ??? Looking forward to hear from you. Thanks for your help. Cheers. Marcus D. Leech wrote: > > On 10/16/2011 05:55 PM, waqasme wrote: >> Hi Marcus, >> >> As i mentioned the flow graph signal blocks i have used in gnu radio >> companion from that i am getting this out put on FFT sink in GNU radio >> companion simulation flowgraph which is similar like this >> >> >> >> > If you're trying to embed images, it's not working, and the de-embedded > ones on the bottom show only > the spectrum of something typical of OFDM, and a spectrum-analyser > output that looks like it was > set up to sweep from 10Hz to 5GHz (is that what you had in mind?), > which would produce only a sharp > peak in the middle. > > We still don't know what your flow-graph(s) look like. > > -- > Marcus Leech > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/OFDM-Transmiter-and-receiver-by-using-USRP1-tp32662445p32675018.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
