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Signaling method having mixed-base shell map indices

  • US 6,084,915 A
  • Filed: 03/03/1998
  • Issued: 07/04/2000
  • Est. Priority Date: 03/03/1997
  • Status: Expired due to Term
First Claim
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1. A method of mapping data bits to a sequence of signal points selected from a signal constellation wherein the points in the signal constellation are equally divided into rings, the method comprising the steps:

  • segmenting a plurality of data bits into a first block and a second block;

    determining a sequence of ring indices ri in response to said first block using multiple modulus conversion, wherein at least one of said ring indices has a base modulus that is a value other than a power of two;

    selecting a signal point sequence in response to the sequence of ring indices ri and said second block.

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