Phase offset estimation of SOQPSK waveform by the analysis of the angle distribution
Rami Othman, Alexandre Skrzypczak, Yves Louët · 2016
In this paper, the problem of phase synchronization is investigated for the shaped offset quadrature phase shift keying (SOQPSK) waveform, a highly bandwidth-efficient modulation. We propose a phase offset estimation algorithm based on the angle distribution analysis of the signal. Simulation results show that the algorithm is capable of correcting large phase offsets in the presence of high noise level even with using a short pilot sequence.