Advanced algorithms for automatic symbol rate estimation of M-FSK and M-PSK signals

Abstract

Algorithms for estimating the symbol rate of signals with modulation types M-PSK and M-FSK are presented. The algorithm for estimating the symbol rate of the M-PSK signals is based on the Fourier transform of the squares of the modules of the complex envelope of the signal. The algorithm for estimating the symbol rate of M-FSK signals is based on the separation of the spectrum of the original signal into separate subcarriers. Algorithms were simulated. It is shown that the algorithm based on separation of subcarriers is less sensitive to noise in the communication channel.