Spread spectrum system with random code retransmission

Details Spread spectrum system with random code retransmission Spread spectrum system with random code retransmission

1989-12-21

1992-01-28

Gregory, Bernarr E.

Pulse or digital communications

Repeaters

Testing

370 18, 370 93, 455 12, H04L 2730

Patent

active

050849000

ABSTRACT:
A communication system includes a hub station and a plurality of terminal stations. An inbound satellite communication link from each of the terminal stations to the hub station sends digital data packets encoded with a CDMA code for code division multiple access during synchronized time slots on a contention channel. Each of the digital data packets is encoded with the same CDMA code during a first transmission, but each packet is encoded with an alternate CDMA code during any subsequent transmission.

REFERENCES:
patent: 3879581 (1974-04-01), Schlosser et al.
patent: 4617674 (1986-10-01), Mangulis et al.
patent: 4637017 (1987-01-01), Assal et al.
patent: 4639937 (1987-01-01), McRae et al.
patent: 4688216 (1987-08-01), Saburi
patent: 4742512 (1988-05-01), Akashi et al.

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