Hi, Seems to me you have to tune in to a qam transmission to run your tests. The difficulty is finding one in your area....
BR, Nikos On Mon, Mar 14, 2016 at 4:05 AM, Nikos Balkanas <nbalka...@gmail.com> wrote: > Hi, > > The narrowband gave me nothing of statistics or your messages, just > messages for connecting to x300 and RFNoC. Let it run for ~5': > > No gain specified. > Setting gain to 18.750000 (from [0.000000, 37.500000]) > -- [0/Radio_0] _resolve_port_def() > -- [0/Radio_0] item type: sc16 > -- [0/Radio_0] vector length: 0 > -- [0/Radio_0] packet size: 0 > -- [RX Streamer] creating rx stream recv_buff_size=33554432 > -- [RX Streamer] data_sid = 00:08>02:30 actual recv_buff_size = 33554432 > -- [0/Radio_0] radio_ctrl::set_destination() > -- Setting sid to 2.48>0.8 > -- [RX Streamer] spp == 364 > -- [RX Streamer] Flow Control Window = 20515, Flow Control Handler Window > = 641 > -- [0/Radio_0] radio_ctrl::configure_flow_control_out()20515 > -- [RX Terminator 0] rx_stream_terminator::set_rx_streamer() 1 > -- [0/Radio_0] radio_ctrl::set_rx_streamer() 1 > -- [Device3] updating RX streamer to RX Terminator 0 > -- New tick_rate == 2e+08 New samp_rate == 200000 New scaling == > 3.05187e-05 > > > ^C-- [RX Terminator 0] rx_stream_terminator::~rx_stream_terminator() > -- [RX Terminator 0] rx_stream_terminator::set_rx_streamer() 0 > -- [0/Radio_0] radio_ctrl::set_rx_streamer() 0 > > The ofdm complained about the S 8 argument and then erred on unknown key > "qam" > > BR, > Nikos > > On Mon, Mar 14, 2016 at 3:51 AM, SangHyuk Kim <tkdgur7...@gmail.com> > wrote: > >> 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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