Spatial diversity satellite communications system with error con

Details Spatial diversity satellite communications system with error con Spatial diversity satellite communications system with error con

1976-06-11

1978-07-04

Safourek, Benedict V.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

325 41, 3401461AG, H03K 1332, H04B 720

Patent

active

040991210

ABSTRACT:
A spatial diversity satellite communications system adapted to provide its own error control. The diversity communications system utilizes transmitting station selection or burst switching in the up-link and both probabalistic and algebraic error control in the down link to increase message accuracy and to overcome precipitation attenuation. Specialized multiple level decision demodulators are employed to exploit the inherent redundancy supplied by having available multiple signals embodying identical messages. Information is fedback, once the system is operating, and is used to select the optimum transmitter site. However, all available receivers are utilized and the received messages are statistically evaluated to accurately reproduce the received message.

REFERENCES:
patent: 3829777 (1974-08-01), Muratani et al.
patent: 3963988 (1976-06-01), Niethammer

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