Exploiting known padding data to improve block decode...

Details Exploiting known padding data to improve block decode... Exploiting known padding data to improve block decode...

H - Electricity

03

M

H03M 13/23 (2006.01) H03M 13/41 (2006.01)

Patent

CA 2582043

A method and system of decoding a convolutionally encoded data block having known padding bits. A Viterbi decoder is constrained to a state corresponding to k-1 padding bits immediately adjacent to data bits of the data block, where k is a constraint length of a convolution encoder used to encode the data block. Symbols of the encoded data block that have influence only from the padding bits are discarded.

Il s'agit d'une méthode et d'un système de décodage d'un bloc de données à codage convolutif comportant des bits de bourrage connus. Un décodeur de Viterbi est contraint à un état correspondant à des bits de bourrage k-1, immédiatement contigus aux bits de données du bloc de données, où k est une longueur de contrainte d'un codeur convolutif servant à coder le bloc de données. Les symboles du bloc de données codées qui influent seulement à partir des bits de bourrage sont rejetés.

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