Decoding of space-time coded signals for wireless communication

Details Decoding of space-time coded signals for wireless communication Decoding of space-time coded signals for wireless communication

H - Electricity

04

B

H04B 7/06 (2006.01) H04B 7/08 (2006.01) H04L 1/06 (2006.01)

Patent

CA 2321618

A method is disclosed for receiving and decoding space-time coded signals, received over a plurality of antennas. Also disclosed is a generalized approach for maximum likelihood decoding where a decision rule is formed for all of the transmitting antennas of a transmitter, and a decision is made in favor of the transmitted symbols that minimize the equation where, (r~) is the signal received at time interval t, at receiving antenna j, h* .epsilon. t(i)j is the complex conjugate of the channel transfer function between the transmitter antenna that is transmitting symbol c i and receiving antenna j, and .delta. r(i) is the sign of symbol c i in the time interval t.

On décrit un procédé de réception et de décodage de signaux codés espace-temps reçus par le biais d'une pluralité d'antennes. On décrit également une approche généralisée qui repose sur une probabilité maximale de décodage et dans laquelle une règle de décision est formée pour l'ensemble des antennes d'émission d'un émetteur, et une décision est prise pour les symboles transmis qui minimisent l'équation (10), dans laquelle (9), (rt<j> étant le signal reçu dans un intervalle de temps t à l'antenne de réception j; h<*> epsilon t(i)j étant le nombre complexe conjugué de la fonction de transfert de canal entre l'antenne d'émission qui transmet le symbole c1 et l'antenne de réception j; et delta t(i) étant le signe du symbole c1 dans l'intervalle de temps t.

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