Re: [Discuss-gnuradio] GNURadio autmatic gain adjustment

[Simon Olvhammar]

Hi Ben,
I have implemented a function to dynamically change my system gain based on sample distribution (to utilize full range of A/D converter). However I'm wondering why the sample values have a dependance on sample rate.
Simon

Den 2016-06-01 kl. 17:19, skrev Ben Hilburn:

Hi Simon -

Just to make sure I'm understanding your question correctly: are you asking how to dynamically change your system gain or scale your samples so that you are using the full range [-1, +1]?

Cheers,

Ben

On Tue, May 31, 2016 at 5:07 PM, olvhammar <address@hidden> wrote:

Hi,

In my GNURadio program I need to determine the correct gain in order to fully utilize the dynamic range of the A/D converter of the Ettus USRP x310.
I currently have implemented a automatic function for this using the probe samples block and make sure that values stays just within -1 > +1. I.e I check the distribution and make sure a certain percentage of the values doesnt go above a threshold value.
However the values seems to have a dependence on sample rates, how should I think here? Anyone else that have implemented this using the probe block, what was your method?

Best regards
Simon

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