[SOLVED] Phase Noise vs DFE Sampling Frequency

[noori.re]

I know that my question is very general but is there any article that can explain the relation between phase noise and sampling frequency in the digital front end of a Bluetooth receiver?
Thank you.

 

[biff44]

not sure of an article. if you undersamled you would fold over two noise sources potentially, and phase noise would go up 3 or 6 db, depending on if they were correlated or not

 

[G4BCH]

if you are under-sampling then the phase noise due the sampling clock will increase by 6dB per octave increase in sampling harmonic.
i.e harmonic 1 +6dB, harmonic 3 9.5dB
Phase noise of a source increases by 20*log( f2/f1)
That is just phase noise as biff44 says you need to account for noise folded into your passband by the AD converter

 

[noori.re]

Thank you. both responses were useful. Anyway, I will be thankful if there is an article (or Matlab code) that I can do an example to get it deeper.

 

[G4BCH]

A search for AD converter phase noise will bring up plenty of papers on the subject.