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A soft output hybrid algorithm for ML/MAP sequence estimation

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3 Author(s)
Brushe, G.D. ; Dept. of Signal Anal. Discipline, Defence Sci. & Technol. Organ., Salisbury, SA, Australia ; Mahony, R.E. ; Moore, J.B.

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

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Information Theory, IEEE Transactions on  (Volume:44 ,  Issue: 7 )