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Method and system of efficient spectrum utilization by communications satellites

  • US 6,810,249 B1
  • Filed: 09/19/2000
  • Issued: 10/26/2004
  • Est. Priority Date: 09/19/2000
  • Status: Expired due to Term
First Claim
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1. A satellite system comprising:

  • a plurality of orbit slots having a first orbit slot and a second orbit slot;

    a first satellite occupying a first orbit slot generating a first set of beams;

    a second satellite occupying a second orbital slot generating a second set of beams; and

    a tiling pattern for use on the surface of the Earth, said tiling pattern having a plurality of cells, each of said cells having a defined frequency for communication, said first set of beams and said second set of beams being generated according to predetermined parameters to avoid interference between said first set and said second set of beams, wherein a first subset of beams of the plurality of beams sharing a same frequency band have a signal power at or above a minimum signal power and a C/(N+I) at or above a minimum C/(N+I) requirement, where C is an intended signal power, N is the noise power due to various natural thermal processes and I is a power due to all interfering signals occupying the same frequency band as the intended signal.

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