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:
Apr. 07, 2009
Filed:
Aug. 19, 2004
Chang-wahn Yu, Daejeon, KR;
Kyung-yeol Sohn, Daejeon, KR;
Youn-ok Park, Daejeon, KR;
Seung-ku Hwang, Seoul, KR;
Chang-Wahn Yu, Daejeon, KR;
Kyung-Yeol Sohn, Daejeon, KR;
Youn-Ok Park, Daejeon, KR;
Seung-Ku Hwang, Seoul, KR;
Electronics and Telecommunications Research Institute, , KR;
Samsung Electronics Co., Ltd., , KR;
SK Telecom Co., Ltd., , KR;
KT Corporation, , KR;
KTFreetel Co., Ltd., , KR;
Hanaro Telecom, Inc., , KR;
Abstract
Disclosed is an apparatus and method for processing a ranging channel in an OFDMA system. The apparatus converts received ranging complex signals to polar coordinate signals having a signal magnitude and a phase, and the received converted signals are each represented by a signal magnitude component and a phase component. A predetermined phase component of a signal according to a phase rotation is used to estimate a time delay by an addition operation of the phase of the received signal and the phase according to the phase rotation. Accordingly, the time delay and the power of each reverse link user of the OFDMA mobile communication system can be calculated by arithmetic operations of addition components instead of multiplication components, resulting in the reduction of complexity.