The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2011
Filed:
Oct. 31, 2007
Maria Laprade, Palm Bay, FL (US);
Matthew C. Cobb, W. Melbourne, FL (US);
Timothy F. Dyson, Melbourne, FL (US);
Maria Laprade, Palm Bay, FL (US);
Matthew C. Cobb, W. Melbourne, FL (US);
Timothy F. Dyson, Melbourne, FL (US);
Harris Corporation, Melbourne, FL (US);
Abstract
A method is provided for performing a MAP probability decoding of a sequence R(n) including N bits of encoded data. The method includes the steps of: (a) generating a sequence rof sot-values by processing the sequence R(n); (b) performing a forward recursion by computing alpha values αutilizing the soft-decision values; (c) performing a backward recursion by computing beta values βutilizing the soft-decision values; and (d) performing an extrinsic computation by computing probability values p'. The alpha values αare relative log-likelihoods of an encoding process arriving at various states. The beta values βare relative log-likelihoods of the encoding process arriving at various states. The probability values p′represent a set of probabilities indicating that each data bit of an input sequence dhad a value equal to zero or one. The sequence R(n) represents an encoded form of the input sequence d.