Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1992-03-23
1993-09-14
Kuntz, Curtis
Pulse or digital communications
Spread spectrum
Direct sequence
375107, 3701041, H04L 700, H04J 306
Patent
active
052456340
ABSTRACT:
A central-site (100) has located within it a synchronization system for purposes of backing-up a GPS external synchronization system. The central-site (100) is coupled to a plurality of base-sites (102, 103) which are required to be synchronized to one another. When the GPS signal is lost, the synchronization system within the central-site (100) allows the plurality of base-sites (102, 103) to maintain synchronization to one another. In this manner, the necessity for a synchronization system within each of the plurality of base-sites (102,103) is eliminated.
REFERENCES:
patent: 4231114 (1980-10-01), Dolikian
patent: 4696052 (1987-09-01), Breeden
patent: 4800560 (1989-01-01), Aoki et al.
patent: 4972442 (1990-11-01), Steierman
Kuntz Curtis
Motorola Inc.
Phan Hai H.
Sonnentag Richard A.
Warren Raymond J.
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