A per-survivor phase-estimation algorithm for detection of PSK signals
Eugenio Chiavaccini, Giorgio Matteo Vitetta · IEEE Transactions on Communications · 2001
An expectation-maximization (EM) technique for maximum a posteriori (MAP) estimation of a random parameter is employed to devise a per-survivor phase-tracking algorithm for phase-shift-keyed signals transmitted over channels with phase jitter. Simulation results show that the proposed algorithm can provide substantial performance gains over recursive and nonrecursive phase estimators in the presence of a strong phase jitter.