Title :
Open-loop characteristic of decision-directed maximum-likelihood phase estimators for MPSK modulated signals
Author_Institution :
Dept. of Commun. & Wave Propagation, Graz Univ. of Technol., Austria
fDate :
2/6/2003 12:00:00 AM
Abstract :
A simple and uniform scheme for computing the open-loop characteristic (S-curve) of a decision-directed maximum-likelihood phase estimator is derived which can be applied in the same manner to M-ary phase-shift keying (MPSK) signals in general. Also, the slope of the S-curve in the stable equilibrium point is given in order to evaluate closed-loop parameters of the linearised model.
Keywords :
digital signals; maximum likelihood detection; maximum likelihood estimation; phase estimation; phase shift keying; M-ary phase-shift keying signals; MPSK modulated signals; S-curve computation; closed-loop parameters; coherent operation; decision-directed maximum-likelihood phase estimators; detector characteristic; detector slope; digital receiver; linearised model; open-loop characteristic; stable equilibrium point;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030216
