Patents by Inventor Liang-Kai Chang

Liang-Kai Chang 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).

  • Methods of beam-indexed spatial modulation
    Patent number: 10148325
    Abstract: This invention provides methods of beam-indexed spatial modulation (BISM) for multiple-input and multiple-output (MIMO) technology. It does not only enhance the efficiency of MIMO using, but also address the compatibility problems in Spatial Modulation (SM-MIMO) and Orthogonal Frequency Division Multiplexing Index Modulation (OFDM-IM). Furthermore, the BISM improves the speed limitation problem and spectral efficiency issue in the current spatial modulation architectures.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 4, 2018
    Assignees: NATIONAL TAIWAN UNIVERSITY, MEDIATEK INC.
    Inventors: Jen-Ming Wu, Liang-Kai Chang, Jian-Wei Wu, Yu-Hsuan Hu
  • METHODS OF BEAM-INDEXED SPATIAL MODULATION
    Publication number: 20180309481
    Abstract: This invention provides methods of beam-indexed spatial modulation (BISM) for multiple-input and multiple-output (MIMO) technology. It does not only enhance the efficiency of MIMO using, but also address the compatibility problems in Spatial Modulation (SM-MIMO) and Orthogonal Frequency Division Multiplexing Index Modulation (OFDM-IM). Furthermore, the BISM improves the speed limitation problem and spectral efficiency issue in the current spatial modulation architectures.
    Type: Application
    Filed: September 29, 2017
    Publication date: October 25, 2018
    Inventors: Jen-Ming Wu, Liang-Kai Chang, Jian-Wei Wu, Yu-Hsuan Hu