A soft output hybrid algorithm for ML/MAP sequence estimation

  • Authors:

  • G. D. Brushe;R. E. Mahony;J. B. Moore

  • Affiliations:

  • Dept. of Signal Anal. Discipline, Defence Sci. & Technol. Organ., Salisbury, SA;-;-

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2006

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Abstract

The classical Viterbi algorithm (ML sequence estimation) can be computed using a forward-backward structure, similar to that of the classical hidden Markov model forward-backward algorithm (MAP state estimation). This similarity is exploited to develop a hybrid algorithm which provides a mathematical connection between ML sequence estimation and MAP state estimation