Hiroshi OGUMA


Experimental Evaluation of Synchronized SS-CDMA Transmission Timing Control Method for QZSS Short Message Communication
Suguru KAMEDA Kei OHYA Hiroshi OGUMA Noriharu SUEMATSU 
Publication:   
Publication Date: 2019/08/01
Vol. E102-B  No. 8  pp. 1781-1790
Type of Manuscript:  PAPER
Category: Satellite Communications
Keyword: 
SS-CDMAQZSSGPStiming synchronizationsatellite communication
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Random Access Control Scheme with Reservation Channel for Capacity Expansion of QZSS Safety Confirmation System
Suguru KAMEDA Kei OHYA Tomohide TAKAHASHI Hiroshi OGUMA Noriharu SUEMATSU 
Publication:   
Publication Date: 2019/01/01
Vol. E102-A  No. 1  pp. 186-194
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
Quasi-Zenith Satellite System (QZSS)Global Positioning System (GPS)access controlframe slotted ALOHAflag method1-bit flagsynchronized spread spectrum code division multiple access (synchronized SS-CDMA)
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Measured Downlink Throughput Performance of MBWA System in Urban Area
Suguru KAMEDA Hiroshi OGUMA Noboru IZUKA Yasuyoshi ASANO Yoshiharu YAMAZAKI Noriharu SUEMATSU Tadashi TAKAGI Kazuo TSUBOUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/01/01
Vol. E96-B  No. 1  pp. 329-334
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
MBWAFH-OFDMAFLASH-OFDMfield trial
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Proposal of Heterogeneous Wireless Network with Handover in Application Layer: Feasibility Study Based on Field Trial Results
Suguru KAMEDA Hiroshi OGUMA Noboru IZUKA Fumihiro YAMAGATA Yasuyoshi ASANO Yoshiharu YAMAZAKI Shoichi TANIFUJI Noriharu SUEMATSU Tadashi TAKAGI Kazuo TSUBOUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/04/01
Vol. E95-B  No. 4  pp. 1152-1160
Type of Manuscript:  Special Section PAPER (Special Section on Cognitive Radio and Heterogeneous Wireless Networks in Conjunction with Main Topics of CrownCom2011)
Category: 
Keyword: 
heterogeneous wireless networksWLANMBWAhandover
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