Multiplex communications – Wide area network – Packet switching
Patent
1987-08-20
1989-01-24
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 306
Patent
active
048005614
ABSTRACT:
A synchronization system maintains the accuracy of time frame synchronization in an earth satellite time division multiple access system. Two metric patterns are provided for giving synchronization accuracy. The system selects one pattern, compares accuracy with threshold values. If the comparison shows less than threshold accuracy, the system switches to the other pattern.
REFERENCES:
patent: 3995111 (1976-11-01), Tsuji et al.
patent: 4602375 (1986-07-01), Inukai
patent: 4686673 (1987-08-01), Hotta
AIAA Paper No. 72-545 Entitled Synchronization of Earth Stations to Satellite-Switched Sequences, by R. A. Rapuano and N. Shimasaki.
Jung Min
NEC Corporation
Olms Douglas W.
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