Code distribution multiple access communication system with user voice activated carrier and code synchronization
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United States of America Patent
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Jul 5, 1994
Grant Date -
N/A
app pub date -
May 30, 1991
filing date -
Aug 3, 1989
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A communication system comprising a master control station and user terminals (100), in which synchronization in the outward link is achieved by transmitting a master code (MC) with the same clock frequency and carrier as the communication signals, wherein the master code (MC) is transmitted continuously and with greater power than that of the return link signals, and wherein the user voice activated message transmission carrier is broken during the pauses in a message. The invention relates in particular to a mobile satellite communications system.
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