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:
Nov. 10, 2009
Filed:
Dec. 07, 2005
Pan-soo Kim, Daejon, KR;
Yun-jeoug Song, Daejon, KR;
Byoung-hak Kim, Daegu, KR;
Deock-gil OH, Daejon, KR;
Ho-jin Lee, Daejon, KR;
Pan-Soo Kim, Daejon, KR;
Yun-Jeoug Song, Daejon, KR;
Byoung-Hak Kim, Daegu, KR;
Deock-Gil Oh, Daejon, KR;
Ho-Jin Lee, Daejon, KR;
Abstract
Provided is a method for estimating carrier wave or doppler frequency offset based on an approximated quadratic non-linear function in fine search, and a receiver employing the method. The method for estimating frequency offset includes the steps of: a) extracting more than three discrete samples in an order where the discrete samples are close to a maximum value of a power spectrum density function; b) inducing a quadratic non-linear function by using the extracted discrete samples; and c) estimating the frequency offset from a maximum point of the quadratic non-linear function. The technology of the present research makes it possible to exactly estimate frequency offset without increasing hardware complexity in estimation of carrier wave or doppler frequency offset.