The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2015
Filed:
Apr. 07, 2010
Jinhui Chen, PuDong Jinqiao Shanghai, CN;
Hongwei Yang, PuDong Jinqiao Shanghai, CN;
Di LV, PuDong Jinqiao Shanghai, CN;
Yang Song, PuDong Jinqiao Shanghai, CN;
Jinhui Chen, PuDong Jinqiao Shanghai, CN;
Hongwei Yang, PuDong Jinqiao Shanghai, CN;
Di Lv, PuDong Jinqiao Shanghai, CN;
Yang Song, PuDong Jinqiao Shanghai, CN;
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
Methods and apparatuses for information feedback and precoding have been provided. A method for processing communication data at a user equipment in a wireless communication system may comprise: deriving a spatial correlation matrix R of multiple transmit antennas of a base station based on an obtained downlink channel transmission matrix H; transforming a precoding codebook F according to the spatial correlation matrix R; selecting a precoding matrix Fbased on the transformed precoding codebook; and feeding back information about the spatial correlation matrix R and information about the selected precoding matrix Fto the base station. A method for data precoding at a base station in a wireless communication system may comprise: obtaining, from a user equipment, information about a spatial correlation matrix R of multiple transmit antennas of the base station and information about a precoding matrix Fselected by the user equipment; determining a desired precoding matrix Fbased on the obtained information and a precoding codebook; and precoding downlink data to be transmitted to the user equipment with the desired precoding matrix F.