Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 5, 2006
Patent Application Number
10412906
Date Filed
April 14, 2003
Patent Primary Examiner
Patent abstract
A turbo decoder iteratively decodes a received, encoded signal with one or more constituent decoders employing a simplified log-maximum a posteriori (SMAP) decoding algorithm. The SMAP decoding algorithm calculates reliability information as a log likelihood ratio for a log-MAP algorithm using a reduced set of path metrics recursively updated based on maximum likelihood recursion. Updated extrinsic information for a subsequent decoding may be derived from the LLR calculated by the SMAP decoding algorithm.
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