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:
Nov. 25, 2014
Filed:
Jun. 21, 2011
Ping-cheng Yeh, Taoyuan County, TW;
Ling-san Meng, Taoyuan, TW;
Pang-chang Lan, Taoyuan, TW;
Chih-yao Wu, Taoyuan, TW;
Yu-chih Jen, Taoyuan, TW;
Ping-Cheng Yeh, Taoyuan County, TW;
Ling-San Meng, Taoyuan, TW;
Pang-Chang Lan, Taoyuan, TW;
Chih-Yao Wu, Taoyuan, TW;
Yu-Chih Jen, Taoyuan, TW;
HTC Corporation, Taoyuan, TW;
Abstract
A method for reducing the quantization effect of precoding operations utilizing a finite codebook in MIMO systems is provided. First, at the receiver side, downlink channel state information is obtained and a set of indices of precoding matrices within a plurality of finite codebooks are selected accordingly. The selected indices of precoding matrices for each of the finite codebooks and a set of scalar coefficients are transmitted from the receiver to the transmitter. Thereafter, at the transmitter side, at least a first and a second refined precoding matrices are generated based on the selected set of indices of precoding matrices for all of the finite codebooks, and the one or more scalar coefficients and a final precoding matrix is generated at least based on the first refined precoding matrix and the second refined precoding matrix. The final precoding matrix is applied for transmission between the transmitter and the receiver.