Rate matching device and method for a data communication system

H - Electricity – 04 – L

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H04L 12/00 (2006.01) H04L 1/00 (2006.01) H04L 1/08 (2006.01)

Patent

CA 2341744

A device and method for matching a rate of channel-encoded symbols in a data communication system. The rate matching device and method can be applied to a data communication system which uses one or both of a non-systematic code (such as a convolution code or a linear function code) and a systematic code (such as a turbo code). The rate matching device includes a plurality of rate matching functions, the number of the rate matching functions being equal to a reciprocal of a coding rate of a channel encoder. The rate matching device can rate match the symbols encoded with a non-systematic code or the symbols encoded with a systematic code, by changing initial parameters including the number of input symbols, the number of output symbols, and the puncturing/repetition parameters determining parameter.

L'invention concerne un dispositif et un procédé de mise en correspondance de symboles de codage de canal dans un système de communication de données. Lesdits dispositif et procédé peuvent s'appliquer à un système de communication de données qui utilise le code non systématique (par exemple un code de convolution ou un code de bloc linéaire) et/ou le code systématique (par exemple un code turbo). Le dispositif de mise en correspondance comprend une pluralité de blocs de mise en correspondance dont le nombre est égal l'inverse d'un taux de codage d'un codeur de canal. Le dispositif de mise en correspondance peut mettre en correspondance les symboles codés avec un code non systématique ou les symboles codés avec un code systématique, en modifiant les paramètres initiaux comportant le nombre de symboles d'entrée, le nombre de symboles de sortie et le paramètre déterminant du motif de répétition/perforation.

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