Thanks Oh yes the "-m" specifies the mod and demod. But the modulation seems related to some other parameters, which I can't see with the "-h" option. We can change the rate by --bitrate, but how about transmit power, and receiver acquisition loop?
BTW, does anybody have the correct parameters setting for DBPSK and DQPSK? We are doing a project, the deadline is approaching. Thanks a lot. Yanyan Tom Rondeau wrote: > > yyzhuang wrote: >> Hi, >> >> I'm pretty new in working with gnuradio. Could you please tell me a bit >> of >> detail about how to change the symbol rate, transmit power, and receiver >> acquisition loop (command line? the script code?) Thanks a ton!! >> >> Yanyan >> > > We use OptionParser for all of our command-line applications which has > the neat attribute that you can use "-h" with the command. This will > print out the help page for any command-line program. > > Tom > > >> Tom Rondeau wrote: >> >>> yyzhuang wrote: >>> >>>> Hi All, >>>> >>>> We are trying to set different modulation and demodulation schemes in >>>> gnuradio example tunnel.py. The default is gmsk, which works fine. But >>>> when >>>> we used -m dbpsk option, the two PCs can't ping each other (although >>>> after >>>> ifconfig setup, both sender and receiver have output like: Tx: >>>> len(payload) >>>> = 192 ). I looked through the script >>>> >>>> tb = my_top_block(mods[options.modulation], >>>> demods[options.modulation], >>>> mac.phy_rx_callback, >>>> options) >>>> >>>> It should be ok if we specify a different modulation with -m, unless >>>> there's >>>> other settings needed. Can anybody help us with the problem? Thanks a >>>> lot. >>>> >>>> Yanyan >>>> >>>> >>> I have used DBPSK and DQPSK fine with tunnel.py. You will probably have >>> to play with the symbol rate, transmit power, and possibly the receiver >>> acquisition loop settings. >>> >>> Tom >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected] >>> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> >> >> > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://www.nabble.com/modulation-and-demodulation-tp22760047p22772588.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
