Dear, Nikos. I want to check both of them.
Thanks! 2016-03-14 10:45 GMT+09:00 Nikos Balkanas <nbalka...@gmail.com>: > Hi Kim, > > I can only test the benchmark_rx.py with my X300 (don't have transmitters > connected) > I can find 2 benchmark_rx.py in my gnuradio-3.7.9.1: > The first is under examples/ofdm and the other under examples/narrowband > Which one do you need tested? > > BR, > Nikos > > On Mon, Mar 14, 2016 at 2:04 AM, SangHyuk Kim <tkdgur7...@gmail.com> > wrote: > >> Could anyone try to this example commend ? >> >> example code location = gnuradio/gr-digital/example/narrowband >> Tx) >> ./benchmark_tx.py -f 1.5G -m qam -S 8 >> Rx) >> ./benchmark_rx.py -f 1.5G -m qam -S 8 >> >> Thanks. >> >> 2016-03-13 18:57 GMT+09:00 SangHyuk Kim <tkdgur7...@gmail.com>: >> >>> Dear Nikos. >>> >>> the value 'ok' returns 'FALSE' as results of crc_check. >>> >>> so, I think packet was corrupted. >>> >>> It happened only some modulation using high bits per symbol (QAM, PSK) >>> >>> Thanks >>> >>> 2016-03-13 18:41 GMT+09:00 Nikos Balkanas <nbalka...@gmail.com>: >>> >>>> Have you inspected the packets and verified them to be corrupt? >>>> >>>> BR >>>> Nikos >>>> >>>> On Sun, Mar 13, 2016 at 10:22 AM, SangHyuk Kim <tkdgur7...@gmail.com> >>>> wrote: >>>> >>>>> Hi all. >>>>> >>>>> I'm using benchmark_tx(rx).py example >>>>> >>>>> I experimented variety modulation schemes and GMSK, BPSK, QPSK >>>>> modulation worked well >>>>> >>>>> However, when I used QAM modulation, most of received packet were >>>>> corrupted (FALSE) >>>>> >>>>> ENV) >>>>> both TX and RX uses USRP N210 with ANT500 and CBX 40MHz >>>>> distance between TX and RX is shorter than 3m >>>>> >>>>> TX) >>>>> ./benchmark_tx.py -f 1.5G -m qam -S 8 --tx-gain=30 >>>>> >>>>> RX) >>>>> ./benchmark_rx.py -f 1.5G -m qam -S 8 >>>>> >>>>> RESULTS ON RX) >>>>> ok = FALSE pktno = 1 n_rcvd = 1 n_right = 0 >>>>> ok = FALSE pktno = 2 n_rcvd = 2 n_right = 0 >>>>> ok = FALSE pktno = 3 n_rcvd = 3 n_right = 0 >>>>> ... >>>>> ok = TRUE pktno = N n_rcvd = N n_right = 1 >>>>> ... >>>>> >>>>> Is this normal case of qam modulation ? >>>>> How can I get more TRUE packet using QAM modulation ? >>>>> >>>>> Thanks. >>>>> >>>>> _______________________________________________ >>>>> Discuss-gnuradio mailing list >>>>> Discuss-gnuradio@gnu.org >>>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>>>> >>>>> >>>> >>> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >
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