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. 09, 2010
Filed:
Dec. 16, 2005
Jae-young Ahn, Daejon, KR;
Yong-soo Cho, Seoul, KR;
Dong-han Kim, Chungcheongnam-do, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
An apparatus for estimating an antenna weight vector in an Orthogonal Frequency Division Multiple Access System (OFDMA) having a smart antenna. The apparatus includes receiving and storing training symbols in the time domain transmitted to estimate an antenna weight vector during a training symbol transmission interval; estimating carrier frequency offsets using training symbols in the frequency domain that are obtained by performing a Fast Fourier Transformation (FFT) algorithm with respect to the training symbols received during the training symbol transmission interval; compensating the stored training symbols in the time domain based on the estimated carrier frequency offsets; and estimating an antenna weight vector using training symbols in the frequency domain that are obtained by applying an FFT algorithm with respect to the training symbols in the time domain derived by compensating the carrier frequency offsets during the training symbol transmission interval.