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Re: [Discuss-gnuradio] how is interpolation rate dynamically set?


From: Eric Blossom
Subject: Re: [Discuss-gnuradio] how is interpolation rate dynamically set?
Date: Fri, 26 Sep 2008 18:42:10 -0700
User-agent: Mutt/1.5.18 (2008-05-17)

On Fri, Sep 26, 2008 at 03:10:14PM -0700, Bill Stevenson wrote:
> Thank you, Brian!
> 
> Now i know how the interpolation changes, but if bitrate were set, how are 
> interp/decim rate and
> samples-per-symbol derived respectively? Is there a default value for 
> interpolation rate? Thanks!!!
> 
> Bill

One of the joys of Free Software is that it comes with the source code.

Take a look at gnuradio-examples/python/digital/pick_bitrate.py

Eric



> From: Brian Padalino <address@hidden>
> To: Bill Stevenson <address@hidden>
> Cc: address@hidden
> Sent: Friday, September 26, 2008 4:09:25 PM
> Subject: Re: [Discuss-gnuradio] how is interpolation rate dynamically set?
> 
> On Fri, Sep 26, 2008 at 4:00 PM, Bill Stevenson
> <address@hidden> wrote:
> > Hello, everybody!
> >
> > I am working on the demo file:
> > gnuradio-examples/python/digital/benchmark_tx.py. In the file
> > transmit_path.py, it is said "specify bitrate.  samples-per-symbol and
> > interp/decim will be derived." How are interp/decim rate and
> > samples-per-symbol derived respectively? what is the range for the variable
> > interpolation rate? Is interpolation rate increased as a multiple of 4?
> > could anyone tell me where i can find the dynamical range of interpolation
> > rate?




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