Implementing reduced-state viterbi detectors
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United States of America Patent
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Jun 27, 2000
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Oct 22, 1997
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Oct 22, 1997
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Abstract
A method of design and an implementation system for reduced-state Viterbi detectors for intersymbol interference channels are provided. The method uses a complement states grouping technique that comprises the steps of finding the state distances between complement states; forming the reduced-state trellis by grouping the complement states with state distance no less than the minimum free distance; and by keeping the complement states with state distance less than minimum free distance unchanged. The resultant reduced-state Viterbi detector has negligible performance loss compared to the full-state Viterbi detector while the complexity is reduced by a factor of about two.
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