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:
Oct. 30, 2012
Filed:
Jun. 26, 2009
Jung Eun Youm, Seoul, KR;
Hyung Jin Choi, Seoul, KR;
Jung Soo Han, Gyunggi-do, KR;
Kyung Hoon Won, Gyunggi-Do, KR;
Hyun Suk Lee, Gyunggi-Do, KR;
Jae Goon Aum, Gyunggi-Do, KR;
Jung Eun Youm, Seoul, KR;
Hyung Jin Choi, Seoul, KR;
Jung Soo Han, Gyunggi-do, KR;
Kyung Hoon Won, Gyunggi-Do, KR;
Hyun Suk Lee, Gyunggi-Do, KR;
Jae Goon Aum, Gyunggi-Do, KR;
Samsung Electro-Mechanics Co., Ltd., Gyunggi-do, KR;
Sungkyunkwan University Foundation for Corporate Collaboration, Gyunggi-do, KR;
Abstract
A sampling frequency offset estimation apparatus of an orthogonal frequency division multiplexing (OFDM) system includes a first differential operation unit performing complex conjugate multiplication of scattered pilots of complex symbols subjected to a fast Fourier transform (FFT) in an OFDM receiver, an interpolation unit repeating an operation of obtaining a median complex symbol between two consecutive symbols among complex symbols having first phase difference information from the first differential operation unit by a predetermined number, a second differential operation unit performing complex conjugate multiplication of two consecutive median complex symbols among median complex symbols from the interpolation unit, and a sampling frequency offset estimation unit estimating sampling frequency offset using complex symbols having second phase difference information from the second differential operation unit.