Re: [Discuss-gnuradio] modulation and demodulation

[Tom Rondeau]

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
> > address@hidden
> > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >
> >
> >     
>
>