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AssigneeTRW Inc.
InventorsEldad Perahia, Donald C. Wilcoxson
Estimating the term…
A satellite-based telecommunication system is provided which communicates with earth-based users located within a predetermined communications area. The communications areas have an associated interference pattern. A satellite antenna is controlled to form an antenna gain pattern distributed across the communications area. The antenna gain pattern represents the gain at any given point within the communications area. The interference pattern corresponds to the amount of interference associated with each point within the communications area. A method and apparatus are provided for controlling the gain defined by a transmitter and/or receiver of a satellite. The transmitter/receiver produces a desired antenna gain pattern. The preferred embodiment includes determining an interference pattern associated with a communications area of interest. Once the interference pattern is identified, a desired antenna gain pattern is then identified. It is preferable that the antenna gain pattern conform to the interference pattern for the communications area.
In a satellite-based communications system communicating with user terminals located in a communications area, the system including at least one satellite with a transceiver for communicating with the user terminals, the transceiver having an antenna for transmitting and receiving communications signals to and from the user terminals in the communications area, the communications area having an associated interference pattern defined by interference levels which vary at different positions in the communications area, the antenna defining an antenna gain pattern, a method for controlling the antenna gain pattern in the communications area, the method comprising:
A satellite-based communications system for communicating with a user terminal located in a communication area, the system including at least one satellite with a transceiver for communicating with the user terminal, the transceiver having an antenna for transmitting and receiving communications signals to and from the user terminal in the communications area, the communication area having an associated interference pattern defined by interference levels which vary at different positions in the communications area, comprising:
A satellite-based communications system for communicating with a user terminal located in a communication area, the system including at least one satellite with a transceiver for communicating with the user terminal, the transceiver having an antenna for transmitting and receiving communications signals to and from the user terminal in the communications area, the communication area having an associated interference pattern defined by interference levels which vary at different positions in the communications area, comprising:
Dependencies are inferred from the claim text.