Transmission using common and dedicated pilots

Details Transmission using common and dedicated pilots Transmission using common and dedicated pilots

H - Electricity

04

B

H04B 1/76 (2006.01) H04W 16/10 (2009.01) H04B 7/06 (2006.01)

Patent

CA 2755574

A method, system, base station and wireless terminal are provided for transmission of a set of mixed pilots that includes both common and dedicated pilots. The method includes selecting a number D of dedicated pilots having regard to performance of the communication link, D>= 0, selecting a first pre-coder for pre-coding D dedicated pilots based on some criteria, performing a first pre-coding of the D dedicated pilots with the first pre-coder to produce a set of pre-coded dedicated pilots, performing a second pre-coding of the set of pre-coded dedicated pilots and a set of common pilots to produce a set of mixed pilots, and transmitting data from the transmitter on the communication link with the set of mixed pilots.

La présente invention concerne un procédé, un système, une station de base et un terminal sans fil pour la transmission d'un ensemble de pilotes mixtes comportant à la fois des pilotes communs et des pilotes dédiés. Le procédé consiste à sélectionner un nombre D de pilotes dédiés en considérant les performances de la liaison de communication, où D = 0, sélectionner un premier pré-codeur destiné à réaliser un pré-codage de D pilotes dédiés sur la base de certains critères, effectuer un premier pré-codage des D pilotes dédiés avec le premier pré-codeur afin de produire un ensemble de pilotes dédiés pré-codés, effectuer un second pré-codage de l'ensemble de pilotes dédiés pré-codés et d'un ensemble de pilotes communs afin de produire un ensemble de pilotes mixtes, et émettre des données depuis l'émetteur sur la liaison de communication avec l'ensemble de pilotes mixtes.

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