The communication protocol that you are looking into should have a predefined symbol rate. At the very least in the pilot sequence of a frame.
--Colby 2010/9/18 intermilan <tianxia...@hotmail.com> > hi Tom: > thank you for your answer,I get it .Besides, how do we know the > symbol rate if the data in the air?what did you do to measure the symbol > rate? > > > Thank you in advance > > > From: trondeau1...@gmail.com > > Date: Fri, 17 Sep 2010 08:21:23 -0400 > > > Subject: Re: [Discuss-gnuradio] want to achieve the symbol rate to > 270.833kb/s > > To: tianxia...@hotmail.com > > CC: discuss-gnuradio@gnu.org > > > > 2010/9/17 intermilan <tianxia...@hotmail.com>: > > > hi Tom: > > > > > > I can not find the examples what you asked me to look for.so what > the > > > version of your Gnuradio? Mine is 3.2.2. > > > Besides, I still wonder why I can not use the resampler block in > the > > > /gnuradio-core/src/python/gnuradio/blks2impl in which I can set the > value of > > > the interpolation and decimation.and the program will automatic to set > the > > > parameters of the filter I need.I think it is capable. So can you tell > some > > > specific reasons? > > > > > > > > > thank you > > > > You'll need either GNU Radio 3.3.0 or the latest checkout from git. > > > > Then yes, you can use the rational resampler. I misunderstood what you > > were saying in your original email. I thought you were having problems > > using the rational resampler to make the values work out properly. The > > nice thing about the arbitrary resampler is that you don't have to > > find a valid set of integers for the interp/decim to get your sample > > rate; instead, you pass it a real number to get out the sample rate > > that you want. > > > > But running through the numbers, it looks to me like you'll get the > > desired sample rate. So yes, that should work. > > > > Tom > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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