Patents by Inventor Seung-Guen KIM

Seung-Guen KIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and method for estimating Doppler shift in underwater communication
    Patent number: 10004052
    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 signal 1 and a received packet signal and time (T1o) at a point having maximum energy of the correlation, and detecting a multipath delay profile at the time (T1o); a correlation calculator for calculating a correlation between a correlation of a known signal 2 and the received packet signal, and the multipath delay profile; a maximum value detector for detecting time (T2o) 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 (T1o) and the time (T2o) at points having respective maximum energy.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 19, 2018
    Assignee: KOREA INSTITUTE OF OCEAN SCIENCE AND TECHNOLOGY
    Inventors: Seung-Guen Kim, Yong-Kon Lim, Sea-Moon Kim, Jong-Won Park, Changho Yun
  • APPARATUS AND METHOD FOR ESTIMATING DOPPLER SHIFT IN UNDERWATER COMMUNICATION
    Publication number: 20160192307
    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 signal 1 and a received packet signal and time (T10) at a point having maximum energy of the correlation, and detecting a multipath delay profile at the time (T10); a correlation calculator for calculating a correlation between a correlation of a known signal 2 and the received packet signal, and the multipath delay profile; a maximum value detector for detecting time (T20) 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 (T10) and the time (T20) at points having respective maximum energy.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 30, 2016
    Inventors: Seung-Guen KIM, Yong-Kon LIM, Sea-Moon KIM, Jong-Won PARK, Changho YUN