Synchronizing means for a two-way communication system

Details Synchronizing means for a two-way communication system Synchronizing means for a two-way communication system

1978-02-27

1980-10-28

Griffin, Robert L.

Telecommunications

Transmitter and receiver at separate stations

Short range rf communication

455 53, 455 54, 455 57, 375107, H04B 150

Patent

active

042311144

ABSTRACT:
Digitally encoded data is carried over a first channel between a base station and a plurality of mobiles with the mobiles sharing a second channel for transmission to the base on a contention basis. Proper decoding of the data requires clock syncing at the receiver site.
To hasten clock recovery lock time at the base station and improve system throughput, each mobile includes apparatus for monitoring transmissions by the base station and deriving a transmit clock base for the mobile's transmitter therefrom such that subsequent transmissions by the mobiles are all substantially in synchronization.

REFERENCES:
patent: 3413554 (1968-11-01), Yates
patent: 3424864 (1969-01-01), Williams
patent: 3646444 (1972-02-01), Bitzer
patent: 3758720 (1973-09-01), Dinn
patent: 3927373 (1975-12-01), Janssens
patent: 4019138 (1977-04-01), Watanabe
patent: 4061974 (1977-12-01), Fletcher

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