Patents by Inventor Daichl Imamura

Daichl Imamura 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).

  • Wireless communication base station device and division number determination method
    Patent number: 8848632
    Abstract: Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit (117) determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit (117) increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit (118) schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit (117).
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: September 30, 2014
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yoshihiko Ogawa, Selgo Nakao, Daichl Imamura, Akihiko Nishio, Masayuki Hoshino, Katsuhiko Hiramatsu, Yasuaki Yuda, Sadaki Futagi, Takashi Iwai, Megumi Ichikawa
  • WIRELESS COMMUNICATION BASE STATION DEVICE AND DIVISION NUMBER DETERMINATION METHOD
    Publication number: 20120026948
    Abstract: Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit (117) determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit (117) increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit (118) schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit (117).
    Type: Application
    Filed: October 15, 2009
    Publication date: February 2, 2012
    Inventors: Yoshihiko Ogawa, Selgo Nakao, Daichl Imamura, Akihiko Nishio, Masayuki Hoshino, Katsuhiko Hiramatsu, Kenichi Miyoshi, Yasuaki Yuda, Megumi Ichikawa, Sadaki Futagi, Takashi Iwai