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Iterative decoder employing multiple external code error checks to lower the error floor

  • US 7,310,768 B2
  • Filed: 07/16/2004
  • Issued: 12/18/2007
  • Est. Priority Date: 01/28/2000
  • Status: Expired due to Fees
First Claim
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1. An iterative decoder, comprising:

  • an internal code decoder operable to perform iterative decoding of a data block; and

    an external code decoder capable of supplying a feedback signal to the internal decoder wherein the feedback signal is used to influence selective decisions during subsequent decoding iterations of the data block, wherein the data block comprises a turbo code data block comprising a plurality of sub-blocks; and

    the external code decoder performs decoding on a sub-block basis.

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