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Re: [Discuss-gnuradio] USRP Tx Rate Conversion


From: Wireless Monster
Subject: Re: [Discuss-gnuradio] USRP Tx Rate Conversion
Date: Tue, 15 Apr 2008 16:09:44 -0400

Brian, Dan,
Thank you very much for your help. It is clear now!
Rgds,

On Tue, Apr 15, 2008 at 4:05 PM, Dan Halperin <address@hidden> wrote:
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 At hat point can I send the samples (for example from a file with
> gr.file_source) and guarantee they will be treated as a 270.8333Ks/s stream?
> (assuming there will be enough samples to process)

No.  They will be treated like a 2Msps stream which is what you
interpolated your 270.8333Ksps stream to.  You will have interpolated
your original signal by exactly 96/13 which will give you a 2Msps
stream.

I think you and Brian are experiencing notational confusion with Ks/s. If you treat the post-processed signal as a 2 Msamples/sec signal then the output signal will be a 270.733 Ksyms/sec. I believe that the USRP settings you describe will do just that.

- -Dan
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