Optimal encoder and encoding method for dual stream system

H - Electricity – 03 – M

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H03M 13/23 (2006.01)

Patent

CA 2616067

Provided are a method of estimating an encoder for dual stream transmission, and an encoder using the same. The method includes the steps of : a) setting up the number of memories required for an encoder, a free distance condition for robust data, and a free distance condition for mixed stream of robust data and normal data; b) obtaining 1/2 rate encoder combinations that sustain backward compatibility with a typical trellis encoder; c) obtaining encoder combinations H that satisfy the free distance condition for the robust data and the free distance condition for the mixed stream from the 1/2 rate encoder combinations; d) obtaining relations between memories and input/output signals, which satisfy the encoder combinations H; and e) configuring an encoder according to the obtained relation between the memories and the input/output signals.

L'invention concerne un procédé pour estimer un codeur pour la transmission à flux doubles et un codeur utilisant ce procédé. Le procédé comprend les stades qui consistent à: a) régler le nombre de mémoires requises pour un codeur, une condition de distances libres pour les données robustes, et une condition de distances libres pour un flux mélangé de données robustes et de données normales; b) obtenir des combinaisons de codeur à rapport 1/2 à compatibilité de rétroaction avec un codeur typique en treillis; c) obtenir des combinaisons de codeur H qui satisfont à la condition de distance libre pour les données robustes et la condition de distances libres pour le flux mélangé des combinaisons de codeur à rapport 1/2; d) obtenir des relations entre les mémoires et les signaux d'entrée-sortie qui satisfont aux combinaisons de codeur H; et e) configurer un codeur en fonction de la relation obtenue entre les mémoires et les signaux d'entrée-sortie.

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