METHOD AND ARRANGEMENT FOR DIFFERENTIALLY DETECTING AN MPSK SIGNAL USING A PLURALITY OF PAST SYMBOL DATA

摘要

In order to differentially detect a multiple-phase shift keying (MPSK) signal,apredetermined number of phase signals are stored at successive symbol timepoints.Thereafter, a plurality of phase differences between the phase signals storedin theabove are calculated. Subsequently, a symbol value of the MPSK signal isdecided or estimated at a current symbol time point using the phasedifferencesobtained in the above and using symbol values already determined at aplurality ofpreceding symbol time points.