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:
Sep. 30, 2014
Filed:
Aug. 31, 2009
Qian Yu, Singapore, SG;
Masayuki Hoshino, Kanagawa, JP;
Daichi Imamura, Kanagawa, JP;
Megumi Ichikawa, Kanagawa, JP;
Qian Yu, Singapore, SG;
Masayuki Hoshino, Kanagawa, JP;
Daichi Imamura, Kanagawa, JP;
Kenichi Miyoshi, Kanagawa, JP;
Panasonic Intellectual Property Corporation of America, Torrance, CA (US);
Abstract
Interference between users in an MU-MIMO system is minimized by effective precoding, without increasing an overhead of control data. In a wireless communication system in which multiplex communication is possible between multiple UE, UE, and BS, a channel estimation and precoding selection unitin BS estimates channels from the respective UE, UEto the BS, determines a precoding matrix P from a projection matrix to make the two channel response matrices orthogonal or nearly orthogonal, and feeds back the precoding matrix P to UE, and executes precoding on only UEof the two. A precoding unitin the UEemploys the precoding matrix P that has been notified to perform precoding of a data stream, and sends the precoded data stream to the BS.