Multiple access communications system and method using code...

H - Electricity – 04 – J

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H04J 13/02 (2006.01) H04B 7/216 (2006.01) H04B 7/26 (2006.01) H04J 11/00 (2006.01) H04B 1/56 (2006.01) H04J 13/00 (2006.01)

Patent

CA 2246535

A multiple access communications system and method using Code Division Multiple Access (CDMA) and Time Division Multiple Access (TDMA) comprises coding information signals with CDMA codewords to be transmitted over a common frequency spectrum, time compressing the CDMA codewords for transmission only during allocated timeslots, activating a receiver only during the allocated timeslots to receive and decompress the time compressed CDMA codewords, and decoding the decompressed CDMA codewords to recover the information signals.

Ce système et ce procédé de communication à accès multiple mettant en oeuvre un accès multiple par différence de code (CDMA) et un accès multiple par répartition dans le temps (TDMA) consistent à coder des signaux d'informations à l'aide de mots de code CDMA à transmettre sur un spectre commun de fréquences, à comprimer en temps les mots de code CDMA, afin de transmettre ceux-ci seulement pendant des tranches de temps allouées, à activer un récepteur seulement durant ces tranches de temps, afin de recevoir et décomprimer les mots de code CDMA, puis à décoder les mots de code CDMA décomprimés, afin de récupérer les signaux d'informations.

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