Re: [Discuss-gnuradio] Decimation Rate with a fraction part

[Brian Padalino]

On Thu, Mar 3, 2011 at 3:04 PM, Nick Othieno <address@hidden> wrote:
> Hi all,
>
> I would like to get an output of 16.3676 Ms/s. Is it then possible to set a
> decimation values of 6.109631223? I am wondering whether decimation values
> have to be whole numbers, or whether decimation values with fraction parts
> are allowed.
>
> The reason for this is that I am trying to mimic the behaviour of the SiGe
> GPS sampler which has a sampling rate of 16.3676 Ms/s. Anyone who has used
> the USRP(2) to collect signals for processing with a software GPS receiver
> written to run specifically with the SiGe sampler is welcome to comment or
> throw in ideas :-)

Integers only with the USRP, but you should be able to setup a
rational resampler after you get your samples.

If you decimated down to 20Msps, then did 40919/50000 resampling, you
should get your exact sample rate.

> Nick

Brian