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Apparatus and method for controlling forward error correction encoding in a very small aperture terminal

  • US 5,511,079 A
  • Filed: 05/26/1993
  • Issued: 04/23/1996
  • Est. Priority Date: 05/26/1993
  • Status: Expired due to Term
First Claim
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1. A method for adjusting the forward error encoding rate of a VSAT each station digital data transmission comprising:

  • measuring at a hub station the level of an echo signal produced in response to a transmission from said hub station to a satellite transponder;

    determining from said level an indication of propagation conditions;

    transmitting a signal from said hub station to a plurality of VSAT earth stations, said signal comprising said indication of propagation conditions; and

    altering the forward error correction rate (FEC) of said VSAT earth station transmission in accordance with said indication of propagation conditions such that the bit error rate for said VSAT earth station transmissions is maintained below a predefined value.

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