S
Shinji Uebayashi
Researcher at NTT DoCoMo
Publications - 56
Citations - 771
Shinji Uebayashi is an academic researcher from NTT DoCoMo. The author has contributed to research in topics: Imaging phantom & Transmission (telecommunications). The author has an hindex of 16, co-authored 56 publications receiving 761 citations. Previous affiliations of Shinji Uebayashi include Nippon Telegraph and Telephone.
Papers
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Patent
Access method mobile station and base station for CDMA mobile communication system
Motohiro Tanno,Shinji Uebayashi +1 more
TL;DR: In this paper, a CDMA mobile communication system for realizing a multiple-access, a common reverse channel 10 is divided into an access channel 10A and a message channel 10B, where each mobile station transmits data in accordance with the spreading code and the transmission timing which are designated from base station 30.
Patent
DS-CDMA transmission method
TL;DR: In this article, a DS-CDMA transmission method capable of improving the accuracy of channel estimation using pilot symbols by eliminating cross-correlation between pilot symbols inserted into code channels in CDMA multiplexing carries out fast signal transmission.
Patent
CDMA communications method and system
TL;DR: In this paper, the fundamental transmission rate of a CDMA channel is determined at a circuit scale and the data whose transmission rate is equal to the fundamental rate is transmitted in frames including no vacant portion.
Patent
Wireless communication system
TL;DR: In this article, a radio communication system with a scatterer configured to reflect, refract, or transmit a radio wave is described, where a metamaterial is used for the scatterers.
Journal ArticleDOI
Characteristics of biological tissue equivalent phantoms applied to UWB communications
Takuya Takimoto,Teruo Onishi,Teruo Onishi,Kazuyuki Saito,Masaharu Takahashi,Shinji Uebayashi,Koichi Ito +6 more
TL;DR: In this paper, the authors examined how to study the antenna characteristics using the phantom when extended to a bandwidth including 900 MHz to 3 GHz and 6 to 10 GHz and performed a quantitative study focusing on the electrical constants of the phantom.