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[Moved]: Phase noise modeling of the digital controlled oscillator

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hanikapa

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Hello,
I have a basic question about the noise simulation for the digital controlled oscillator in matlab. There is two profiles for the phase noise as the attached figures. One (left side) is obtained by importing the phase noise at different offsets to matlab. The other (right side) is obtained by applying additional fft operations,... as explained in https://nl.mathworks.com/matlabcentral/fileexchange/8844-phase-noise
can you please let me know that which of these profiles are more accurate and should be used?
Thanks noise.png
 

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