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. 20, 2011
Filed:
Jan. 20, 2005
Bin-chul Ihm, Gyeonggi-Do, KR;
Young-soo Yuk, Seoul, KR;
Min-seok OH, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A closed-loop MIMO system includes a receiver for forming a new predefined set by using elements of a previous predefined set, selecting a certain matrix of the new predefined set, and feeding back an index of the matrix, if the number of transmit antennas increases, and a transmitter for performing signal transmission by multiplying the matrix of the feedback index to a transmission signal. Although the number of transmit antennas increases, candidate matrices can be simply obtained by using candidate matrices of a previous set. Moreover, to by proposing a reference for selecting an optimal solution with a small amount of calculation, burden on a system can be considerably reduced.