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Method and apparatus for increased system capacity using antenna beamforming

  • US 6,195,037 B1
  • Filed: 06/01/1999
  • Issued: 02/27/2001
  • Est. Priority Date: 06/01/1999
  • Status: Expired due to Term
First Claim
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1. A method for increasing system capacity in a satellite communications system comprising a plurality of communications satellites, wherein a satellite comprises an array antenna and beamformer for providing a plurality of beams, said method comprising the steps of:

  • (a) determining a location for said satellite, said location being determined using latitude, said latitude being an angular distance measured in degrees from an equator;

    (b) establishing said plurality of beams based on said location;

    (b1) identifying a first beam in said plurality of beams;

    (b2) determining whether said first beam requires modification based on said location for said satellite;

    (b2a) determining whether cell size modification is required for said first beam; and

    (b2b) modifying a cell diameter to accomplish said cell size modification.

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