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Adaptive coding and modulation for spot beam satellite broadcast

  • US 9,485,010 B1
  • Filed: 03/16/2006
  • Issued: 11/01/2016
  • Est. Priority Date: 09/10/2001
  • Status: Active Grant
First Claim
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1. A method of adaptively controlling a transmission signal for transmission to a receiver in a terrestrial region, comprising the steps of:

  • receiving information describing a time-varying propagation characteristic of the transmission signal in the terrestrial region;

    selecting a transmission signal mode from a plurality of transmission signal modes according to the received information, the transmission signal modes defined by transmission signal characteristics including modulation scheme and code rate;

    changing the transmission signal according to the selected transmission signal mode; and

    wherein the transmission signal comprises a media program having a transition and the timing of the change in the transmission signal according to the selected transmission signal mode is controlled to be made during the transition.

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