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. 09, 2010
Filed:
Oct. 31, 2007
Sang-in Cho, Daejon, KR;
Kyu-min Kang, Daejon, KR;
Cheol-ho Shin, Daejon, KR;
Sang-sung Choi, Daejon, KR;
Kwang-roh Park, Daejon, KR;
Sang-In Cho, Daejon, KR;
Kyu-Min Kang, Daejon, KR;
Cheol-Ho Shin, Daejon, KR;
Sang-Sung Choi, Daejon, KR;
Kwang-Roh Park, Daejon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
There is provided an apparatus for detecting a preamble packet in an orthogonal frequency-division multiplexing (OFDM) system, including: a cross-correlation calculating means for calculating a cross-correlation value between a received signal and previously stored preamble pattern values for an OFDM symbol region (N-point); a delay means for delaying the calculate cross-correlation value as much as a M-point interval; a receiving power measuring means for measuring a receiving power for the guard interval; and a dividing means for calculating a final cross-correlation value by dividing the delayed cross correlation value by the measured power.