Method and apparatus for decision directed demodulation...

Details Method and apparatus for decision directed demodulation... Method and apparatus for decision directed demodulation...

H - Electricity

04

L

H04L 27/22 (2006.01) H04L 1/06 (2006.01) H04L 27/233 (2006.01) H04L 27/00 (2006.01)

Patent

CA 2268262

A method and apparatus for generating a reference signal (631) for use in an alternating projection loop which is part of demodulation in a base station of a wireless communication system, the reference signal (631) relaxed to minimize the effect of frequency offset and amplitude variations, the base station including an array of antennas (110.1-110.4). The alternating projection loop demodulates in the presence of co-channel interference and includes correction for time alignment and/or frequency offset.

Cette invention se rapporte à un procédé et à un appareil qui permettent de générer un signal de référence (631) destiné à une boucle de projection alternative qui fait partie de la démodulation d'une station de base d'un système de télécommunications sans fil, le signal de référence (631) étant réduit en amplitude de façon à minimiser l'effet du décalage de fréquence et des variations d'amplitude, et la station de base comportant un réseau d'antennes (110.1-110.4). La boucle de projection alternative, qui démodule en présence de brouillage sur un même canal, inclut une correction d'alignement temporel et/ou de décalage de fréquence.

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