06240124 is referenced by 195 patents and cites 35 patents.

A satellite communication system (

10

) includes at least one satellite communication signal repeater (

12

); at least one ground station (

18

) for transmitting a feeder link comprised of a plurality of communication signals to the at least one satellite communication signal repeater; and a plurality of user terminals (

13

) each receiving one of the communication signals over a user link from the at least one satellite communication signal repeater. A method includes steps of measuring a quality of at least one reference signal received by the user terminal, via the satellite; transmitting the measured quality of the reference signal received by the user terminal to the ground station; comparing the measured quality with a predetermined reference; and adjusting a transmit power of the ground station in response to a difference between the predetermined reference and measured quality. The transmit power of the ground station is adjusted so that a flux density of a downlink beam is substantially constant at the user terminal independent of the location of the user terminal in the beam.

Title
Closed loop power control for low earth orbit satellite communications system
Application Number
9/432301
Publication Number
6240124 (B1)
Application Date
November 2, 1999
Publication Date
May 29, 2001
Inventor
Michael J Sites
Fremont
CA, US
Robert A Wiedeman
San Jose
CA, US
Agent
Ohlandt Greeley Ruggiero & Perle L
US
Assignee
Globalstar
CA, US
IPC
A61F 2/06
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