Title :
A novel U-turn counting hangup detection algorithm for SDPSK modulation
Author :
Yang, Jooyeol ; Lim, Hyoungsoo ; Cheun, Kyungwhoon
Author_Institution :
Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea
fDate :
5/1/2000 12:00:00 AM
Abstract :
A new hangup detection algorithm for symmetric differential phase-shift keying (SDPSK) modulation is proposed. Hangup is detected by observing phase transition patterns in the received SDPSK signal trajectory. The average pull-in times with and without the proposed hangup detector are compared. Simulation results show that the proposed algorithm significantly reduces the average pull-in time when the initial timing error is near the unstable null. We also show that the proposed algorithm is very robust against carrier frequency offsets.
Keywords :
differential phase shift keying; digital radio; packet radio networks; satellite communication; signal detection; SDPSK modulation; U-turn counting hangup detection algorithm; average pull-in times reduction; carrier frequency offsets; digital communication systems; hangup detector; initial timing error; phase transition patterns; received SDPSK signal trajectory; satellite packet radio network; simulation results; symmetric differential phase-shift keying; unstable null; AWGN; Additive white noise; Detection algorithms; Detectors; Differential phase shift keying; Frequency; Phase detection; Phase locked loops; Phase modulation; Timing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.846502
