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:
Aug. 14, 2012
Filed:
Oct. 10, 2007
In-kyeong Choi, Daejeon, KR;
Dong-seung Kwon, Daejeon, KR;
Choong-il Yeh, Daejeon, KR;
Ji-won Kang, Incheon, KR;
Chung-yong Lee, Seoul, KR;
In-Kyeong Choi, Daejeon, KR;
Dong-Seung Kwon, Daejeon, KR;
Choong-Il Yeh, Daejeon, KR;
Ji-Won Kang, Incheon, KR;
Chung-Yong Lee, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
The present invention relates to a method of forming a random beam, and a beam forming apparatus. A quantization preprocessor and a random unitary matrix having a predetermined pattern are used to form a beam on a mobile terminal. A base station forms a beam using a codeword index of a quantization codebook received from a mobile terminal and channel quality information corresponding to the codeword index, and the mobile terminal generates the codeword index and the channel quality information using pilot signals generated by the base station. The number of pilot signals is equal to the number of transmitting antennas. Therefore, a codebook that has been known to both the mobile terminal and the base station is used, and the mobile terminal can select the codeword index for quantization, which makes it possible to selectively give diversity and thus improve the system efficiency.