Method of sequence estimation

Details Method of sequence estimation Method of sequence estimation

H - Electricity

03

M

H03M 7/00 (2006.01) H03M 13/39 (2006.01) H03M 13/41 (2006.01) H04L 1/00 (2006.01)

Patent

CA 2253395

The prior art method of estimating a sequence by making use of a viterbi algorithm is modified as follows: (1) A path at a certain past instant is modified to derive a modified path. (2) The path metric value of the modified path is calculated. (3) The path metric of a normal path and the path metric of the modified path are compared. If the path metric of the modified path is smaller, the path is modified. (4) A surviving path is selected from plural paths passing through the modified path.

Le procédé d'estimation sérielle classique utilisant l'algorithme de Viterbi est modifié de la façon suivante: (i) un chemin modifié, obtenu par la modification de la route d'un chemin une fois un certain temps écoulé, est établi; (2) la mesure de chemin du chemin modifié est calculée; (3) la mesure de chemin du chemin modifié est comparée à celle du chemin normal et, quand ladite mesure est plus petite, la route du chemin modifié est corrigée; et (4) un chemin survivant est sélectionné parmi une pluralité de chemins suivant la route corrigée.

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