H
Hiroshi Harada
Researcher at Kyoto University
Publications - 374
Citations - 2672
Hiroshi Harada is an academic researcher from Kyoto University. The author has contributed to research in topics: Wireless & Cognitive radio. The author has an hindex of 24, co-authored 354 publications receiving 2485 citations. Previous affiliations of Hiroshi Harada include Denso & National Institute of Information and Communications Technology.
Papers
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Journal ArticleDOI
A Reliable Channel Estimation Scheme Using Scattered Pilot Pattern for IEEE 802.22-Based Mobile Communication System
TL;DR: A reliable channel estimation scheme enabling an IEEE 802.22-based mobile communication system in rural areas without altering physical layer parameters is proposed and sufficiently achieves a required bit error rate of $2\times 10-4$ in a highly mobile long-delay multipath fading environment even in the presence of high carrier frequency offset.
Journal ArticleDOI
Spectrum sensing for cognitive radio systems: technical aspects and standardization activities of the IEEE P1900.6 working group
Klaus Moessner,Hiroshi Harada,Chen Sun,Yohannes D. Alemseged,Ha Nguyen Tran,Dominique Noguet,R Sawai,N Sato +7 more
TL;DR: The article presents the main technical aspects of the IEEE P1900.6 sensing interface and its usefulness in CRSs and discusses working group activities aimed at standardizing logical interfaces and data structures required for exchange of sensing related information between sensors and their clients.
Proceedings ArticleDOI
User Throughput Enhancement with Dynamic Full-Duplex Cellular System in Dense Urban Multi-cell Environment
TL;DR: An advanced DDC (Dynamic-Duplex Cellular) system applying IBFD to all cells in a multi-cell environment and enhances the system capacity with proper scheduling and power control without information exchange among neighboring cells while maintaining compatibility with the conventional TD (Time division Duplex)-LTE system is proposed.
Proceedings ArticleDOI
Design and implementation of a Wi-Fi prototype system in TVWS based on IEEE 802.11 af
TL;DR: This paper presents the world's first prototype system of Wi-Fi in TVWS based on the TGaf draft specification, and demonstrates that, with sufficiently defined MAC protocol and PHY that meets sharp transmission spectrum mask, the developed prototype supports video streaming on single TV channel while well coexisting with primary TV services in the vicinity.