On Fri, Feb 15, 2008 at 03:23:27PM -0700, rick zhang wrote:
> >
> > Hello folks,
> > I want to try some working transmitter and receiver GSR package. It seems
> > most emails in the archive are talking about receiving while I'm interested
> > in both transmitting and receiving. I prefer to have a system with a
> > bandwidth of 8 MHz, but I'm willing to settle for 6 MHz if it is the best
> > the current USRP can do. I have tried the BBN package and want to try
> > something else.
> >
> > Any suggestion is welcome!
> >
> > Thanks,
> >
> > Junxing
Try the code in gnuradio-examples/python/digital, and be sure to read
the README.
[EMAIL PROTECTED] digital]$ ./benchmark_tx.py --help
Usage: benchmark_tx.py [options]
Options:
-h, --helpshow this help message and exit
-m MODULATION, --modulation=MODULATION
Select modulation from: cpm, d8psk, qam8, dbpsk,
dqpsk, gmsk [default=gmsk]
-s SIZE, --size=SIZE set packet size [default=1500]
-M MEGABYTES, --megabytes=MEGABYTES
set megabytes to transmit [default=1.0]
--discontinuous enable discontinous transmission (bursts of 5 packets)
--from-file=FROM_FILE
use file for packet contents
-f FREQ, --freq=FREQ set Tx and/or Rx frequency to FREQ [default=none]
-r BITRATE, --bitrate=BITRATE
specify bitrate. samples-per-symbol and interp/decim
will be derived.
-T TX_SUBDEV_SPEC, --tx-subdev-spec=TX_SUBDEV_SPEC
select USRP Tx side A or B
--tx-amplitude=AMPL set transmitter digital amplitude: 0 <= AMPL < 32768
[default=12000]
-v, --verbose
Expert:
-S SAMPLES_PER_SYMBOL, --samples-per-symbol=SAMPLES_PER_SYMBOL
set samples/symbol [default=none]
--tx-freq=FREQ set transmit frequency to FREQ [default=none]
-i INTERP, --interp=INTERP
set fpga interpolation rate to INTERP [default=none]
--log Log all parts of flow graph to file (CAUTION: lots of
data)
--use-whitener-offset
make sequential packets use different whitening
--excess-bw=EXCESS_BW
set RRC excess bandwith factor [default=0.35] (PSK)
--no-gray-code disable gray coding on modulated bits (PSK)
--bt=BT set bandwidth-time product [default=0.35] (GMSK)
-B FUSB_BLOCK_SIZE, --fusb-block-size=FUSB_BLOCK_SIZE
specify fast usb block size [default=0]
-N FUSB_NBLOCKS, --fusb-nblocks=FUSB_NBLOCKS
specify number of fast usb blocks [default=0]
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