05640386 is referenced by 90 patents and cites 29 patents.

A system and method are disclosed for bidirectionally coupling a first satellite communication system to a second satellite communication system, wherein the first and second systems operate with different protocols. In a presently preferred embodiment of this invention the first system uses a spread spectrum (SS), code division multiple access (CDMA) technique wherein the satellites serve as simple `bent pipe` repeaters for relaying communications between a user and a gateway. The second satellite communication system may be any other type of system having at least one characteristic that precludes direct communication between the first and the second systems. In an exemplary embodiment the second system uses a time division multiple access (TDMA) technique, and furthermore enables direct satellite-to-satellite communication links. A ground-based protocol conversion unit (70) is positioned for receiving a communication from a satellite of either the first or the second system, and includes circuitry for converting the transmission into a transmission that is suitable for transmission into the other system.

Title
Two-system protocol conversion transceiver repeater
Application Number
8/468531
Publication Number
5640386
Application Date
June 6, 1995
Publication Date
June 17, 1997
Inventor
Robert A Wiedeman
Los Altos
CA, US
Agent
Perman & Green
Assignee
Globalstar
CA, US
IPC
H04J 13/02
H04B 7/216
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