Linear precoding for spatially correlated channels

Details Linear precoding for spatially correlated channels Linear precoding for spatially correlated channels

H - Electricity

04

B

H04B 7/005 (2006.01) H04B 7/06 (2006.01)

Patent

CA 2627449

Systems and methodologies are described that facilitate estimating transmit covariance from evaluation of a channel (e.g., forward link channel, reverse link channel, ~) to be utilized in linear precoding for multiple-input multiple-output (MIMO) wireless communication systems. Predefined codebooks that include any number of precoding matrices may be modified based upon transmit covariance estimations to yield improved precoding performance. Further, channel related feedback may be generated and analyzed by utilizing the modified codebooks.

L'invention concerne des systèmes et des méthodologies permettant de faciliter l'estimation d'une covariance de transmission à partir d'une évaluation de canal (par exemple, canal de liaison avant, canal de liaison inverse) à utiliser dans un précodage linéaire pour des systèmes de communication sans fil à entrée multiple et à sortie multiple (MIMO). Des listes de codages prédéfinies comprenant un nombre quelconque de matrices de précodage peuvent être modifiées en fonction des estimations de covariance de transmission pour obtenir une meilleure performance de précodage. En outre, une rétroaction associée au canal peut être générée et analysée en faisant appel aux listes de codages modifiées.

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