Patents by Inventor Dahae Chong

Dahae Chong 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).

  • METHOD OF GENERATING CORRELATION FUNCTION WITH NO SIDE-PEAK AND SYSTEM FOR TRACKING BINARY OFFSET CARRIER SIGNAL
    Publication number: 20140125522
    Abstract: Disclosed herein are a method of generating a correlation function with no side-peak and a system for tracking a BOC signal in order to synchronize the BOC signal. The method of generating a correlation function includes step S1 of generating sub-correlation functions {Sl(?)}l=0N?1, step S2 of generating a first final correlation function R0(?) by combining some of the sub-correlation functions, and step S3 of generating a second final correlation function Rproposed(?) by combining R0(?) with each of the remaining sub-correlation functions that have not been used for the combination at step S2. The BOC signal is one or more of BOCsin(kn,n) and BOCcos(kn,n) signals.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 8, 2014
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKEAN UNIVERVERSITY
    Inventors: Youngpo Lee, Dahae Chong, Junhwan Kim, Seung Goo Kang, Seokho Yoon
  • METHOD AND APPARATUS OF ESTIMATING FREQUENCY OFFSET BASED ON PARTIAL PERIODOGRAM IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20130051447
    Abstract: A method and an apparatus of estimating a frequency offset in a wireless communication system are provided. An orthogonal frequency division multiplexing (OFDM) receiver performs envelope equalized processing (EEP) with respect to a reception signal and calculates a partial periodogram with a plurality of test values based on the reception signal which goes through the EEP. The OFDM receiver estimates a first frequency offset, a second frequency offset, and a third frequency offset based on two partial periodograms adjacent to each other among the partial periodograms for the plurality of test values.
    Type: Application
    Filed: August 29, 2012
    Publication date: February 28, 2013
    Applicant: Research & Business Foundation Sungkyunkwan Universit
    Inventors: Seokho YOON, Dahae CHONG, Junhwan KIM, Seung Goo KANG, Youngpo LEE
  • Methods of synchronizing with first multipath component in ultra wideband receiver and ultra wideband receivers using the same
    Patent number: 8340156
    Abstract: A synchronization method in a Ultra Wideband (UWB) receiver includes receiving a signal through a multipath channel, and synchronizing with a first multipath component of the received signal by computing a correlation value between the received signal and a template signal of the receiver in a predetermined search range. Since multipath components received at the receiver after the first multipath component of the received signal have lower power than that of the first multipath component, the synchronization with the first multipath component of the received signal may improve the performance in processes after the synchronization process.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: December 25, 2012
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Dahae Chong, Seokho Yoon, Sangho Ahn, Youngpo Lee
  • Method for estimating frequency offset in system utilizing a plurality of sub-carriers
    Patent number: 8325831
    Abstract: An integer frequency offset estimation scheme in an orthogonal frequency division multiplexing (OFDM)-based system is disclosed.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: December 4, 2012
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Youngyoon Lee, Seokho Yoon, Taeung Yoon, Dahae Chong
  • Methods of synchronizing with first multipath component in ultra wideband receiver and ultra wideband receivers using the same
    Publication number: 20100014560
    Abstract: A synchronization method in a Ultra Wideband (UWB) receiver includes receiving a signal through a multipath channel, and synchronizing with a first multipath component of the received signal by computing a correlation value between the received signal and a template signal of the receiver in a predetermined search range. Since multipath components received at the receiver after the first multipath component of the received signal have lower power than that of the first multipath component, the synchronization with the first multipath component of the received signal may improve the performance in processes after the synchronization process.
    Type: Application
    Filed: November 21, 2008
    Publication date: January 21, 2010
    Inventors: Dahae Chong, Seokho Yoon, Sangho Ahn, Youngpo Lee
  • METHOD FOR ESTIMATING FREQUENCY OFFSET IN SYSTEM UTILIZING A PLURALITY OF SUB-CARRIERS
    Publication number: 20090323837
    Abstract: An integer frequency offset estimation scheme in an orthogonal frequency division multiplexing (OFDM)-based system is disclosed.
    Type: Application
    Filed: January 30, 2009
    Publication date: December 31, 2009
    Applicant: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Youngyoon LEE, Seokho YOON, Taeung YOON, Dahae CHONG