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:
Mar. 04, 2014
Filed:
Nov. 06, 2009
Jaewon Kim, Seoul, KR;
Jaewon Chang, Seoul, KR;
Dong-uk Lee, Seoul, KR;
Wonjin Sung, Seoul, KR;
Byoung-hoon Kim, Gyeonggi-Do, KR;
Jun-ho JO, Gyeonggi-Do, KR;
Jaewon Kim, Seoul, KR;
Jaewon Chang, Seoul, KR;
Dong-Uk Lee, Seoul, KR;
Wonjin Sung, Seoul, KR;
Byoung-Hoon Kim, Gyeonggi-Do, KR;
Jun-Ho Jo, Gyeonggi-Do, KR;
LG Electronics Inc., Seoul, KR;
Industry University Cooperation Foundation, Sogang University, Seoul, KR;
Abstract
Disclosed is a method for receiving data in a Multi Input Multi Output (MIMO) system, the method comprising: decoding data transmitted from a transmitter by using one beam-forming vector included in a codebook that beam-forming vectors are formed in a hierarchical structure according to at least one of change directions of radio channels, the number of channel change directions, and a change rate; determining whether to update the beam-forming vector based on the radio channel changes; selecting other beam-forming vector included in the codebook having a hierarchical structure when it is determined that update for the beam-forming vector is required; feed-backing information about an index indicating where the selected beam-forming vector is located in the hierarchical structure of the codebook to the transmitter; and decoding data received from the transmitter by using the selected beam-forming vector.