Diversity transmitter and diversity transmission method

H - Electricity – 04 – L

Patent

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Details

H04L 1/06 (2006.01) H04B 7/06 (2006.01)

Patent

CA 2455859

The present invention concerns a diversity transmitter, comprising: transmit symbol input means (1) for inputting a symbol matrix (b) to be forwarded to a transmit processing means (2), said transmit processing means comprising supplying means (2a) for supplying columns of said symbol to a plurality of at least two branches, each branch being supplied to a respective one of spatial channels (A1, ..., Am) for transmission to a receiver, a parallelization means (2b) adapted to provide within each branch at least two parallel channels allocated to a respective user, and weighting means (2c) adapted to subject the symbol signals on at least one of said branches to an invertible linear transformation with a fixed complex weight, the complex weight being different for at least two parallel channels. The present invention also concerns a corresponding diversity transmission method.- Fig. 1 -

La présente invention concerne un émetteur de diversité comportant un dispositif d'entrée de symboles de transmission (1) permettant d'entrer une matrice de symboles (b) à envoyer à une dispositif de traitement de transmission (2). Ce dispositif de traitement de transmission comprend un dispositif de distribution (2a) permettant de distribuer des colonnes dudit symbole à une pluralité d'au moins deux branches qui sont respectivement distribuées à un canal spatial respectif de canaux spatiaux (A1,..., Am) dans le cadre de la transmission à un récepteur, un dispositif de mise en parallèle (2b) conçu pour distribuer à l'intérieur de chaque branche au moins deux canaux parallèles alloués à un utilisateur respectif, et un dispositif de pondération (2c) conçu pour soumettre les signaux symboles situés sur au moins une desdites branches à une transformation linéaire réversible dotée d'un poids complexe fixé, ledit poids complexe étant différent pour au moins deux canaux parallèles. Cette invention a aussi trait à un procédé de transmission de diversité correspondant.

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