System for digital information transmission, with associated...

H - Electricity – 04 – L

Patent

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H04L 27/26 (2006.01)

Patent

CA 2266372

In order to achieve high bandwidth efficiency and a low bit and message error probability in digital data transmission, a system (1) with associated methods and devices is provided, in which there is no need for carrier synchronization or clock synchronization. Digital multicarrier transmission with coding and decoding is carried out on the basis of block synchronization, wherein, for carrier modulation, the modulation of the subcarriers is carried out differentially in coded form in the direction of the subcarriers, that is to say in the frequency domain.

Afin de parvenir à une bande passante de grande efficacité et à une probabilité réduite d'erreur sur les bits et les messages, lors de la transmission numérique de données, il est prévu un système (1), ainsi qu'un procédé et des dispositifs appropriés. Ce procédé n'implique ni synchronisation de porteuses ni synchronisation d'horloge. Une transmission numérique à porteuses multiples avec codage et décodage est effectuée à partir d'une synchronisation en bloc. Lors de la modulation de porteuses, l'occupation des sous-porteuses est codée de manière différenciée dans le sens des sous-porteuses c'est-à-dire dans le sens de la fréquence.

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