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:
Jun. 19, 2018
Filed:
Dec. 28, 2015
Korea Institute of Ocean Science and Technology, Gyeonggi-do, KR;
Seung-Guen Kim, Daejeon, KR;
Yong-Kon Lim, Daejeon, KR;
Sea-Moon Kim, Daejeon, KR;
Jong-Won Park, Daejeon, KR;
Changho Yun, Sejong-Si, KR;
KOREA INSTITUTE OF OCEAN SCIENCE AND TECHNOLOGY, Gyeonggi_Do, KR;
Abstract
Disclosed is an apparatus and method for estimating a Doppler shift for underwater communication. The apparatus includes: a multipath delay profile determiner for detecting a correlation of a known signaland a received packet signal and time (T) at a point having maximum energy of the correlation, and detecting a multipath delay profile at the time (T); a correlation calculator for calculating a correlation between a correlation of a known signaland the received packet signal, and the multipath delay profile; a maximum value detector for detecting time (T) at a point having maximum energy of the correlation calculated by the correlation calculator; and a Doppler shift estimator for determining a Doppler shift using a difference between the time (T) and the time (T) at points having respective maximum energy.