Non-binary viterbi decoder using butterfly operations

Details Non-binary viterbi decoder using butterfly operations Non-binary viterbi decoder using butterfly operations

H - Electricity

03

M

H03M 13/00 (2006.01) H03M 13/41 (2006.01) H03M 13/47 (2006.01)

Patent

CA 2316941

A decoder for decoding a data signal using a non-binary trellis diagram by designating binary butterfly trellises within the non-binary trellis is disclosed. The decoder analyzes each designated binary butterfly trellis using the basic Viterbi binary butterfly operation to generate a pair of pathways to each node of the non-binary trellis. The pathways for each node from the basic binary butterfly operations are compared to determine the survivor path for that node.

L'invention concerne un décodeur pour décoder un signal de données au moyen d'un diagramme en treillis non binaire, par la désignation de treillis papillons binaires au sein du treillis non binaire. Le décodeur analyse chaque treillis papillon binaire au moyen de l'opération papillon binaire de Viterbi basique, pour générer une paire de voies d'accès à chaque noeud du treillis non binaire. Les voies d'accès à chaque noeud, définies par les opérations papillons binaires basiques, sont comparées de sorte que la voie survivante pour le noeud concerné soit déterminée.

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