Title :
A per-survivor phase-estimation algorithm for detection of PSK signals
Author :
Chiavaccini, Eugenio ; Vitetta, Giorgio M.
Author_Institution :
Dept. of Inf. Eng., Modena Univ., Italy
fDate :
12/1/2001 12:00:00 AM
Abstract :
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
Keywords :
jitter; optimisation; phase estimation; phase shift keying; signal detection; tracking; EM-based phase estimator; PSK signal detection; expectation-maximization; nonrecursive phase estimator; per-survivor phase-estimation algorithm; phase jitter; phase-tracking algorithm; random parameter estimation; recursive phase estimator; signal model; simulation results; Delay; Jitter; Phase detection; Phase estimation; Phase shift keying; Random variables; Recursive estimation; Signal detection; State estimation; Viterbi algorithm;
Journal_Title :
Communications, IEEE Transactions on
