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. 23, 2013
Filed:
Sep. 29, 2010
Chonghan Song, Suwon-si, KR;
Junhwan Kim, Suwon-si, KR;
Youngpo Lee, Suwon-si, KR;
Seung Goo Kang, Suwon-si, KR;
Seokho Yoon, Suwon-si, KR;
Chonghan Song, Suwon-si, KR;
Junhwan Kim, Suwon-si, KR;
Youngpo Lee, Suwon-si, KR;
Seung Goo Kang, Suwon-si, KR;
Seokho Yoon, Suwon-si, KR;
Sungkyunkwan University Foundation for Corporate Collaboration, Suwon-Si, Gyeonggi-Do, KR;
Abstract
Provided is an apparatus for estimating a frequency offset by one training symbol including two symbols having the same structure and value in an OFDM system. The apparatus includes a first likelihood function calculator for modeling non-Gaussian impulsive noise included in the training symbol to a Cauchy probability density function in which a characteristic exponent of a BISαS probability density function is 1, and calculating a likelihood function of a Cauchy distribution using the Cauchy probability density function, and a first frequency offset estimator for estimating an effective frequency offset value in which the likelihood function of the Cauchy distribution of the first likelihood function calculator becomes highest as a frequency offset estimation value. Thereby, it is possible to improve the performance of frequency offset estimation in non-Gaussian impulsive noise environments.