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 > >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
