Takatoshi SUGIYAMA


Experimental Verification of Distributed Array Antenna Technology of Earth-Station on Vessel for Satellite Communication System
Kouhei SUZAKI Yoshinori SUZUKI Takashi HIROSE Kiyoshi KOBAYASHI Takatoshi SUGIYAMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2014/11/01
Vol. J97-B  No. 11  pp. 1022-1031
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress and Expansion of Satellite Communication and Related Space Technology)
Category: 
Keyword: 
satellite communicationESV (earth station on vessel)Distributed Array Antenna (DAA)phase compensation
 Summary | Full Text(in Japanese):PDF(1.5MB)

Propagation Characteristic Estimations of 5GHz-band Wireless Links in High-Speed Train Cars Using FDTD Analysis
Masami SHIRAFUNE Takashi HIKAGE Toshio NOJIMA Motoharu SASAKI Wataru YAMADA Takatoshi SUGIYAMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2014/09/01
Vol. J97-B  No. 9  pp. 762-769
Type of Manuscript:  Special Section PAPER (Special Section on Antennas and Propagation Technologies Supporting the Foundations of Wireless Systems)
Category: 
Keyword: 
wireless LANhigh-speed train carspropagation characteristicslarge-scale FDTD analysis
 Summary | Full Text(in Japanese):PDF(3.5MB)

A Proposal of Multi-Carrier Channel Control for Mobile Satellite Communication Systems to Make Maximum Use both of Transponder Bandwidth and Transmission Power
Katsuya NAKAHIRA Takatoshi SUGIYAMA Hiroki NISHIYAMA Nei KATO 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2012/05/01
Vol. J95-B  No. 5  pp. 662-676
Type of Manuscript:  PAPER
Category: 
Keyword: 
satellite communicationchannel allocationpropagation variationadaptive modulationmulti-carrier transmission
 Summary | Full Text(in Japanese):PDF(1.9MB)

MAC Protocol to Guarantee QoS for Network Coded Wireless LAN Relay System
Yuki NAKATO Masahiro MORIKURA Daisuke UMEHARA Nobuaki OTSUKI Takatoshi SUGIYAMA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2012/05/01
Vol. J95-D  No. 5  pp. 1142-1150
Type of Manuscript:  Special Section PAPER (Special Section on Technologies and Applications of the Internet)
Category: 
Keyword: 
wireless LANtwo-hop wireless relay systemsnetwork codingQoS control
 Summary | Full Text(in Japanese):PDF(1MB)