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System and method performing quadrature amplitude modulation by combining co-sets and strongly coded co-set identifiers

  • US 8,290,078 B2
  • Filed: 08/16/2010
  • Issued: 10/16/2012
  • Est. Priority Date: 08/23/2001
  • Status: Active Grant
First Claim
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1. A method of encoding a stream of data elements comprising:

  • defining a signal constellation comprising a plurality of constellation points;

    defining a plurality of co-sets within the plurality of constellation points such that a minimum distance between constellation points within each co-set is larger than a minimum distance between any constellation points within the signal constellation;

    splitting the stream of data elements into a first stream and a second stream;

    encoding the first stream to produce a first encoded stream;

    performing a constellation mapping using the first encoded stream to identify a sequence of co-sets of said plurality of co-sets, and using a third stream which is based on the second stream to identify a sequence of constellation points within respective co-sets of the sequence of co-sets identified by said first encoded stream.

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