Communication systems and apparatus with synchronous...

H - Electricity – 04 – J

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H04J 11/00 (2006.01) H04J 14/00 (2006.01) H04J 14/02 (2006.01) H04J 13/00 (2006.01)

Patent

CA 2376858

Code-multiplexed communication systems (100), apparatus, and methods include coders (Fig.1) that encode and decode data streams with synchronous, substantially orthogonal codes. Code- multiplexed communications systems (100) encode data signals with such codes to control levels of decoding artifacts such as cross-talk at times or time intervals in which data is recovered. Some systems are based on synchronous, orthogonal codes that are obtained from complex orthogonal vectors. In an example, a three-level temporal-phase code that includes nine code chips is used to encodes and decodes data signals is a seven-channel communication system.

L'invention concerne des systèmes, un appareil et des procédés de communication à multiplexage par code (100), des codeurs étant destinés à coder et à décoder des flux de données au moyen de codes synchrones sensiblement orthogonaux. Ces systèmes de communication à multiplexage par code (100) sont conçus pour coder des signaux de données à l'aide de codes qui permettent de maintenir à un niveau acceptable des artefacts de décodage, par exemple une diaphonie susceptible d'apparaître au cours d'une extraction de données ou à intervalles de temps pendant cette extraction. Certains systèmes s'appuient sur l'utilisation de codes orthogonaux synchrones produits par des vecteurs orthogonaux complexes. Dans un exemple, un code à phase temporelle à trois niveaux qui comporte neuf éléments de code et permet de coder et de décoder de signaux de données est un système de communication à sept voies.

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