hi, i would like to try the OFDM example but i cannot find the benchmark_ofdm_tx.py and benchmark_ofdm_rx.py file in /gnuradio-example/python/digital. did i search it in the wrong place or did the file being remove from the gnuradio-3.1.3.tar ?
trondeau wrote: > > For anyone working with the OFDM code, my latest check-in to the trunk > fixes some of the main issues of transmitting over the air. Using > benchmark_ofdm_rx and benchmark_ofdm_tx on different machines, I am now > able to successfully capture most packets with any modulation at the > appropriate signal level. > > I say most packets because there is still an issue involved in the > receiver where the regenerator signal pops up before the peak detector > signal resets it and causes a problem in the packet sampler. To see what > I mean, run > "benchmark_ofdm.py --log" > > And look at the output of the regen and peak detector blocks: > gr_plot_char.py ofdm_sync_pn-regen_b.dat ofdm_sync_pn-peaks_b.dat > > This will plot a series of 0's with a few 1's, where the peaks occur. > The peak detector sends it out once, and then the regenerator takes > over. For every packet, there is one output of the peak detector. If you > look, sometimes the peak detector will hit just after a regenerated > signal. By this point, it's too late and the ofdm_sampler has already > triggered off of the regen signal and ignores the peak. > > It's a bit of a hassle, but I'll look into it soon. Any help is > appreciated, though :) > > Tom > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://www.nabble.com/OFDM-Updates-tp15334667p21748528.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
