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. 23, 2008
Filed:
Oct. 20, 2004
Young-ha Lee, Daejeon, KR;
Chang-wahn Yu, Daejeon, KR;
Youn-ok Park, Daejeon, KR;
Seung-ku Hwang, Seoul, KR;
Young-Ha Lee, Daejeon, KR;
Chang-Wahn Yu, 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
In the uplink of an OFDMA system, a preamble is used to estimate a channel and then the pilot tones of a data symbol are used for channel estimation to update the channel estimate. The channel estimate is used for channel compensation, and the phase of the channel is corrected using the channel estimate obtained from the pilot tones. In this way, the channel estimation performance and hence the compensation ability can be enhanced.