0
$\begingroup$

We know that in equiprobable data,change in phase over a time interval, this result will be directly proportional to frequency: f∝Im(s(n)s(n−1)∗) Where s(n) is the normalized complex FSK time domain signal.

In the MPSK Modulations, Cyclic Spectrum Density method can give a peaks, for example for the QPSK:

enter image description here

But in the in the non equiprobable FSK signal, this peaks do'nt appear. How to solve it?

Improve this question
$\endgroup$
2
  • $\begingroup$ If I understand this question correctly, I think you're confusing something: frequency is defined as change in phase over time, that has nothing to do with FSK, or the data. It always is true – it's a definition. $\endgroup$
    – Marcus Müller
    Jan 18, 2020 at 16:13
  • $\begingroup$ @Marcus Müller I ediited my question. $\endgroup$
    – Angelina ha
    Jan 20, 2020 at 9:45

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.