Yes, the final sampling rate of DAC is 128Msps which is fixed number. But what is the default value for interpolation rate? As we know, bitrate=128M/interpolation rate/samples per symbol* bit per symbol, while bit per symbol could be known from modulation scheme, how to calculate interpolation rate once the bitrate is set? Thanks!
Bill ----- Original Message ---- From: Brian Padalino <[EMAIL PROTECTED]> To: Bill Stevenson <[EMAIL PROTECTED]> Cc: [email protected] Sent: Friday, September 26, 2008 6:16:42 PM Subject: Re: [Discuss-gnuradio] how is interpolation rate dynamically set? On Fri, Sep 26, 2008 at 6:10 PM, Bill Stevenson <[EMAIL PROTECTED]> 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!!! I believe the USRP operates at 128Msps for the TX DAC. This value does not change. Brian
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