Patents by Inventor Sun-Hee Hwang

Sun-Hee Hwang 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).

  • Space-time block coding system combined with local polynomial approximation based beamformer
    Patent number: 7555050
    Abstract: Provided is an STBC transceiving system with LPA-based beamformer, including: an STBC encoder having branches, in number of D, to generate output signals in number of D for an input signal; a beamformer having output antennas in number of D*B, being comprised of beam-forming subarrays in number of D each having the output antennas in number of B to form a downlink beam from the D-numbered output signals of the STBC encoder; and an STBC decoder restoring an original signal by dividing a signal, which is received as one with signals transmitted through a mobile antenna from the D-numbered beam-forming subarrays, into signals in number of D in accordance with the subarrays in consideration of channel characteristics.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: June 30, 2009
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Dong-Soo Har, Sun-Hee Hwang
  • Space-time block coding system combined with local polynomial approximation based beamformer
    Publication number: 20060256886
    Abstract: Provided is an STBC transceiving system with LPA-based beamformer, including: an STBC encoder having branches, in number of D, to generate output signals in number of D for an input signal; a beamformer having output antennas in number of D*B, being comprised of beam-forming subarrays in number of D each having the output antennas in number of B to form a downlink beam from the D-numbered output signals of the STBC encoder; and an STBC decoder restoring an original signal by dividing a signal, which is received as one with signals transmitted through a mobile antenna from the D-numbered beam-forming subarrays, into signals in number of D in accordance with the subarrays in consideration of channel characteristics.
    Type: Application
    Filed: April 3, 2006
    Publication date: November 16, 2006
    Inventors: Dong-Soo Har, Sun-Hee Hwang