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:
Jun. 19, 2012
Filed:
Jan. 29, 2008
In-soo Hwang, Yongin-si, KR;
Jong-hyung Kwun, Seongsam-si, KR;
Sei-joon Shim, Austin, TX (US);
Chan-byoung Chae, Austin, TX (US);
Robert Heath, Jr., Austin, TX (US);
In-Soo Hwang, Yongin-si, KR;
Jong-Hyung Kwun, Seongsam-si, KR;
Sei-Joon Shim, Austin, TX (US);
Chan-Byoung Chae, Austin, TX (US);
Robert Heath, Jr., Austin, TX (US);
Samsung Electronics Co., Ltd, Suwon-si, KR;
Board of Regents, The University of Texas System, Austin, TX (US);
Abstract
A precoder and a precoding method in a multiuser multi-antenna system are provided. The precoder includes a channel checker for determining a DownLink (DL) channel condition of terminals in a service coverage area, a pre-compensator for pre-compensating, for channel distortion, signals to be sent to the terminals when a nonlinear algorithm is selected based on the channel condition of the terminals, and an interference remover for canceling interference in a channel by multiplying the pre-compensated signals by inverse channels of the terminals, and for canceling interference between the terminals. Accordingly, the pre-equalization can be carried out without global channel state information, and an increase of the transmit power can be prevented in the permutation.