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Method and apparatus for performing forward error correction in an orthogonal frequency division multiplexed communication network

  • US 8,418,036 B2
  • Filed: 10/16/2009
  • Issued: 04/09/2013
  • Est. Priority Date: 10/16/2008
  • Status: Active Grant
First Claim
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1. A method for a transmitting network device to encode data for transmission on a network link to a receiving network device, comprising:

  • obtaining a media access control (MAC) frame scheduled for a physical layer (PHY) payload transmission and having a MAC frame length, wherein the PHY payload comprises a number of symbols;

    obtaining a default forward error correction (FEC) coding scheme for the network link, the default FEC coding scheme having a default parity length;

    calculating a payload capacity value for the PHY payload using characteristics of the default coding scheme;

    if the payload capacity value is at least as great as the default parity length, determining a new FEC coding scheme that maintains the number of orthogonal frequency division multiplexing (OFDM) symbols and is configured such that a symbol pad length for the PHY payload using the new FEC coding scheme is less than a default symbol pad length for the PHY payload using the default FEC coding scheme; and

    encoding the MAC frame using the new FEC coding scheme.

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