H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 13/00 (2006.01) H04B 1/707 (2006.01) H04K 1/02 (2006.01)
Patent
CA 2102082
Despreading of the received signal in a CDMA system is provided using code coefficient sequences which are derived from those utilized by the system users to encode their respective symbols. Each derived code coefficient sequence is a function of the correlation between a different user's code coefficient sequence and the code coefficient sequences of all other users. Advantageously, this technique substantially reduces interference effects and is suitable for use in the despreader of differentially or nondifferentially coded CDMA systems.
Le désétalement du signal reçu dans un système AMRC est effectué au moyen de séquences de coefficients de codage dérivées de celles qui servent aux utilisateurs du système pour coder leurs symboles respectifs. Chaque séquence de coefficients de codage dérivée est fonction de la corrélation existant entre une séquence de coefficients de codage d'un utilisateur donné et les séquences de coefficients de codage de tous les autres utilisateurs. La technique a l'avantage de réduire sensiblement les effets de brouillage et peut servir au désétalement de systèmes AMRC à codage différentiel ou non différentiel.
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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