Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1984-09-05
1987-06-02
Griffin, Robert L.
Pulse or digital communications
Spread spectrum
Direct sequence
375 97, 375109, 455 62, 455 69, 455 71, 370 71, 370121, H04L 700
Patent
active
046708898
ABSTRACT:
A multipoint radio system has a single node which communicates with a plurality of outstations on one frequency. The outstations using a different single frequency to communicate with the node. The node controls the transmission frequency at the outstations, e.g. by transmitting error signals which adjust the set points of frequency control loops in the outstations. In a preferred embodiment the node allows for residual errors by adjusting the decision threshold of its regenerator to the outstation on transmission.
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ICC '83 Conference Record of the International Conference on Communication, Boston, Jun. 19th-22nd, 1983; pp. D4.2.1.-D4.2.4., IEEE, US: Y. Manichaikul et al.: "RAPAC--A Point to Point System for Local Distribution".
Patents Abstracts of Japan, vol. 6, No. 251 (E-147) (1129), Dec. 10th, 1982; & JP-A-57 148 432 (Nippon Denki K.K.), 9-13-82.
British Telecommunications PLC
Griffin Robert L.
Huseman M.
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