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Methods and apparatus for transmitting layered and non-layered data via layered modulation

  • US 7,630,451 B2
  • Filed: 01/11/2006
  • Issued: 12/08/2009
  • Est. Priority Date: 01/11/2005
  • Status: Active Grant
First Claim
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1. A method of transmitting data, the method comprising:

  • receiving base layer data;

    encoding the base layer data to base layer symbols;

    receiving enhancement layer data;

    determining termination of the enhancement layer data prior to termination of the base layer data;

    generating stuffing data;

    appending the stuffing data to the enhancement layer data;

    encoding the enhancement layer data appended with the stuffing data to enhancement layer symbols;

    mapping base layer symbols in combination with enhancement layer symbols corresponding to the enhancement layer data to a first constellation; and

    mapping base layer symbols in combination with enhancement layer symbols corresponding to the stuffing data to a second constellation.

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