Two timing recovery algorithms for MSK

Abstract

Suggests two algorithms that allow efficient timing recovery for MSK based on the computation of the Fourier spectrum of the absolute value of the differential phases. One is suited for parallel frequency estimation while the second is less complex but requires previous frequency correction. The algorithms are investigated using both analysis and simulation. The two algorithms approximately lead to the same results as known from linear modulation techniques. Using a differential detection MSK receiver, an optimal preamble of length 16 is sufficient for achieving SNR losses below 0.5 dB at 12 dB, when interpolating the differential phase sequence to 8/T.<>