Patents by Inventor Keisuke Yamamota

Keisuke Yamamota 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).

  • MIMO wireless data communication system, MIMO wireless data communication method and MIMO wireless data communication apparatus
    Publication number: 20110033005
    Abstract: In a MIMO wireless communication system, the transformation process synthesizes the eigenmodes having a large singular value (i.e. a high effective SNR) and the eigenmodes having a small singular value (i.e. a low effective SNR). Thereby, the former eigenmodes are converted into modes having suppressed effective SNR which do not require a large number of levels of modulation, and the latter eigenmodes are converted into modes having increased effective SNR instead. In a MIMO wireless communication system for eigenmode transmission, a large communication capacity is realized without increasing the number of levels of modulation even in a communication environment capable of achieving a high SNR.
    Type: Application
    Filed: October 12, 2010
    Publication date: February 10, 2011
    Inventors: Shigenori Hayase, Masaaki Shida, Keisuke Yamamota