Hiromi OKADA


Development of Emergency Rescue Evacuation Support System (ERESS) in Panic-Type Disasters: Disaster Recognition Algorithm by Support Vector Machine
Kazuya MORI  Akinori YAMANE  Youhei HAYAKAWA  Tomotaka WADA  Kazuhiro OHTSUKI  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/02/01
Vol. E96-A  No. 2  pp. 649-657
Type of Manuscript: PAPER
Category: Mobile Information Network and Personal Communications
Keyword: 
ad-hoc networkMANETERESSSupport Vector Machine
  Summary |  Full Text:PDF (2.3MB)

Swift Communication Range Recognition Method for Quick and Accurate Position Estimation of Passive RFID Tags
Manato FUJIMOTO  Tomotaka WADA  Atsuki INADA  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/09/01
Vol. E95-A  No. 9  pp. 1596-1605
Type of Manuscript: PAPER
Category: Measurement Technology
Keyword: 
RFID systemRFID readerRFID tagSwift Communication Range Recognition (S-CRR)communication area modelboundary angle
  Summary |  Full Text:PDF (3.5MB)

Localization of Passive RFID Tags by Using Broad-Type Multi-Sensing-Range (B-MSR) Method
Manato FUJIMOTO  Tomotaka WADA  Atsuki INADA  Emi NAKAMORI  Yuki ODA  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/07/01
Vol. E95-A  No. 7  pp. 1164-1174
Type of Manuscript: PAPER
Category: Measurement Technology
Keyword: 
RFID readerRFID tagposition estimationsensor modelbroad-type multi-sensing-range method
  Summary |  Full Text:PDF (3.7MB)

An Adaptive Multi-Range-Sensing Method for 3D Localization of Passive RFID Tags
Tomotaka WADA  Toshihiro HORI  Manato FUJIMOTO  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/06/01
Vol. E95-A  No. 6  pp. 1074-1083
Type of Manuscript: PAPER
Category: Mobile Information Network and Personal Communications
Keyword: 
RFID (Radio Frequency IDentification)localizationpassive RFID tagtransmission power
  Summary |  Full Text:PDF (2.8MB)

A Novel Fast Mobile IPv6 Handover Scheme Using Dual Bands in Road-to-Vehicle Communications
Tomotaka WADA  Hiroyuki TAKAHASHI  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/01/01
Vol. E95-A  No. 1  pp. 313-316
Type of Manuscript: Special Section LETTER (Special Section on Intelligent Transport Systems)
Category: ITS
Keyword: 
handovermobile IPv6dual bandsroad-to-vehicle communications
  Summary |  Full Text:PDF (977.7KB)

Mobile Terminal Substitution of Vehicular Collision Avoidance Support System (VCASS) for Non-VCASS Vehicles: S-VCASS
Tomotaka WADA  Shinji NAKAI  Tetsuya MARUOKA  Haokun WANG  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 410-419
Type of Manuscript: PAPER
Category: Intelligent Transport System
Keyword: 
ITSIVCGPSwireless LANmobile terminalVCASS (Vehicular Collision Avoidance Support System)
  Summary |  Full Text:PDF (5.6MB)

A Novel Real-Time Recognition Method of Vehicular Traffic Congestion by VANET
Tomotaka WADA  Junya FUKUMOTO  Kazuhiro OHTSUKI  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 55-63
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems Technologies and Their Application to Networked Systems)
Category: Scalability & Timeliness
Keyword: 
ITSIVCVANETtraffic congestionlevel-n information
  Summary |  Full Text:PDF (2.5MB)

A Novel Emergency Rescue Urgent Communications for Sharing Evacuation Support Information in Panic-Type Disasters
Tomotaka WADA  Akinori YAMANE  Kazuhiro OHTSUKI  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/12/01
Vol. E93-B  No. 12  pp. 3429-3437
Type of Manuscript: Special Section PAPER (Special Section on Wireless Distributed Networks)
Category: 
Keyword: 
ad-hoc networkMANETpanic-type disasterevacuation route search
  Summary |  Full Text:PDF (1.7MB)

A Novel Communication Range Recognition (CRR) Scheme for Spatial Localization of Passive RFID Tags
Tomotaka WADA  Norie UCHITOMI  Yuuki OTA  Toshihiro HORI  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/09/01
Vol. E93-A  No. 9  pp. 1660-1669
Type of Manuscript: PAPER
Category: Mobile Information Network and Personal Communications
Keyword: 
RFID readerRFID taglocalizationcommunication range recognitionestimated position error
  Summary |  Full Text:PDF (1.6MB)

Pedestrian Oriented Vehicular Collision Avoidance Support System: P-VCASS
Tomotaka WADA  Yuki NAKANISHI  Ryohta YAMAGUCHI  Kazushi FUJIMOTO  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/04/01
Vol. E93-A  No. 4  pp. 679-688
Type of Manuscript: Special Section PAPER (Special Section on Intelligent Transport Systems)
Category: 
Keyword: 
ITSVCASSGPSP-VCASS
  Summary |  Full Text:PDF (1.3MB)

A Multi-Sensing-Range Method for Efficient Position Estimation by Passive RFID Technology
Toshihiro HORI  Tomotaka WADA  Norie UCHITOMI  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/10/01
Vol. E92-A  No. 10  pp. 2609-2617
Type of Manuscript: PAPER
Category: Mobile Information Network and Personal Communications
Keyword: 
RFID (Radio Frequency IDentification)RFID readerRFID tagposition estimationpassive taglikelihoodtransmission power
  Summary |  Full Text:PDF (1.3MB)

An Adaptive Likelihood Distribution Algorithm for the Localization of Passive RFID Tags
Yuuki OTA  Toshihiro HORI  Taiki ONISHI  Tomotaka WADA  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/07/01
Vol. E91-A  No. 7  pp. 1666-1675
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
RFID readerRFID taglocalizationlikelihood distributionestimated position error
  Summary |  Full Text:PDF (1.7MB)

Experimental Performance Evaluations of Reflect-Transmission Control Schemes for Vehicle-PEdestrian Communications (VPEC)
Yoshihisa OKADA  Tomotaka WADA  Masato HORIE  Fumio NAKASE  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/10/01
Vol. E90-B  No. 10  pp. 2931-2939
Type of Manuscript: PAPER
Category: Integrated Systems for Communications
Keyword: 
ITSIVCVANETVPECreflect-transmission schemeCRI
  Summary |  Full Text:PDF (1.2MB)

A Cost-Effective Dynamic Content Migration Method in CDNs
Hiroyuki EBARA  Yasutomo ABE  Daisuke IKEDA  Tomoya TSUTSUI  Kazuya SAKAI  Akiko NAKANIWA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/12/01
Vol. E88-B  No. 12  pp. 4598-4604
Type of Manuscript: PAPER
Category: Network Management/Operation
Keyword: 
content distribution network (CDN)Internetcontent migrationdynamic content allocationshortest path
  Summary |  Full Text:PDF (732.3KB)

Vehicular-Collision Avoidance Support System (VCASS) by Inter-Vehicle Communications for Advanced ITS
Jumpei UEKI  Sentarou TASAKA  Yuji HATTA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1816-1823
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: Network Management/Operation
Keyword: 
mobile ad hoc networkIVCITSvehicular-collision avoidancecollision judgment
  Summary |  Full Text:PDF (1.4MB)

Load Fluctuation-Based Dynamic File Allocation with Cost-Effective Mirror Function
Jun TAKAHASHI  Akiko NAKANIWA  Yasutomo ABE  Hiroyuki EBARA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/04/01
Vol. E86-B  No. 4  pp. 1317-1326
Type of Manuscript: PAPER
Category: Network
Keyword: 
load balancingsimple mirroring functiondynamic file allocationInternetdistributed networks
  Summary |  Full Text:PDF (702.9KB)

PRMA/URN with Enhanced Access Control for CDMA Environment
Tomohiro HARUKI  Takashi MATSUMOTO  Jun-ichi NISHIMURA  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/02/01
Vol. E86-B  No. 2  pp. 709-717
Type of Manuscript: PAPER
Category: Wireless Communication Technology
Keyword: 
PRMAURNCDMAenhanced access
  Summary |  Full Text:PDF (1.1MB)

An Effective Multicast ATM Switch for Advanced Multimedia Communication --Singlecast Stuffed Multicast Advanced Processing (SSMAP) ATM Switch --
Takahiro NISHIMURA  Katsutoshi OHMAE  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 413-420
Type of Manuscript: PAPER
Category: Switching
Keyword: 
multicastATM switchOSCSWSCS
  Summary |  Full Text:PDF (764.4KB)

CDMA with Code Assignment Control for Integrated Voice/Data Transmission
Tomohiro HARUKI  Jun-ichi NISHIMURA  Kouichi MUTSUURA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/10/01
Vol. E85-B  No. 10  pp. 2247-2254
Type of Manuscript: PAPER
Category: Wireless Communication Technology
Keyword: 
PRMACDMAcode assignment controlenhanced mode
  Summary |  Full Text:PDF (949.5KB)

Reliability-Based Mirroring of Servers in Distributed Networks
Akiko NAKANIWA  Jun TAKAHASHI  Hiroyuki EBARA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/02/01
Vol. E85-B  No. 2  pp. 540-549
Type of Manuscript: PAPER
Category: Network Management/Operation
Keyword: 
load balancingreliabilitymirroringdistributed database systemInternet
  Summary |  Full Text:PDF (660.8KB)

Sensitivity Analysis in Optimal Design for Distributed File Allocation Systems
Akiko NAKANIWA  Masaki ONISHI  Hiroyuki EBARA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/06/01
Vol. E84-B  No. 6  pp. 1655-1663
Type of Manuscript: PAPER
Category: Software Platform
Keyword: 
distributed processingdistributed database systemfile allocationsensitivity analysismultimedia information network
  Summary |  Full Text:PDF (591.6KB)

Mobile Multimedia Access Protocols in Packet-typed Wireless Networks
Tetsuya YAMASHITA  Takashi MATSUMOTO  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/01/20
Vol. E83-B  No. 1  pp. 56-67
Type of Manuscript: PAPER
Category: Mobile Communication
Keyword: 
packet-typed wireless networksaccess schemepacket transmissionmobile communicationstransmission channel
  Summary |  Full Text:PDF (810.1KB)

FOREWORD
Hiromi OKADA  Masato EGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/20
Vol. E82-A  No. 7  pp. 1137-1137
Type of Manuscript: FOREWORD
Category: 
Keyword: 
  Summary |  Full Text:PDF (19.8KB)

An Integrated Dynamic Error Control Scheme for Wireless ATM Networks
Kentaro YAMADA  Hiromi OKADA  Ten Hwang LAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/20
Vol. E82-A  No. 7  pp. 1261-1268
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
wireless ATMrandom and burst errorsARQFECbit interleavingdynamic error control
  Summary |  Full Text:PDF (575.4KB)

File Allocation Designs for Distributed Multimedia Information Networks
Akiko NAKANIWA  Hiroyuki EBARA  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/08/20
Vol. E81-B  No. 8  pp. 1647-1655
Type of Manuscript: Special Section PAPER (Special Issue on Multimedia Communications in Heterogeneous Network Environments)
Category: Heterogeneous Multimedia Servers
Keyword: 
distributed processingdistributed database system optimal file allocation video on demandmultimedia information networkheterogeneous network
  Summary |  Full Text:PDF (744.8KB)

A Large Capacity Photonic ATM Switch Based on Wavelength Division Multiplexing Technology
Youngbok CHOI  Hideki TODE  Hiromi OKADA  Hiromasa IKEDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/04/20
Vol. E79-B  No. 4  pp. 560-568
Type of Manuscript: PAPER
Category: Communication Networks and Services
Keyword: 
photonic switchelectronic controlATM switchingWDM optical networksWDM optical buffer
  Summary |  Full Text:PDF (798.6KB)

A Photonic ATM Switch Architecture for WDM Optical Networks
Youngbok CHOI  Hideki TODE  Hiromi OKADA  Hiromasa IKEDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/09/20
Vol. E78-B  No. 9  pp. 1333-1335
Type of Manuscript: LETTER
Category: Switching and Communication Processing
Keyword: 
photonic switchATM switchingWDM optical networksWDM optical buffer
  Summary |  Full Text:PDF (252.1KB)

Performance Study of the Multi-Cell Transfer Scheme in the Optical Backbone Network
Youngbok CHOI  Hideki TODE  Miki YAMAMOTO  Hiromi OKADA  Hiromasa IKEDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/05/20
Vol. E78-B  No. 5  pp. 729-736
Type of Manuscript: PAPER
Category: Switching and Communication Processing
Keyword: 
ATM switchingphotonic switchmulti-cellbackbone networkVPS
  Summary |  Full Text:PDF (731.7KB)

A Proposal of Quasi-STM Transmission Method in ATM-Based Network
Hideki TODE  Noriaki KAMIYAMA  Chikara OHTA  Miki YAMAMOTO  Hiromi OKADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/07/20
Vol. E76-B  No. 7  pp. 719-722
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference)
Category: 
Keyword: 
ATMlossfreeno delay jitterhierarchical frameQuasi-STM
  Summary |  Full Text:PDF (286KB)

Layered Self-Organizing Packet Radio Networks
Akira ISHIDA  Jae-Gyu YOO  Miki YAMAMOTO  Hiromi OKADA  Yoshikazu TEZUKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/12/20
Vol. E75-A  No. 12  pp. 1720-1726
Type of Manuscript: Special Section PAPER (Special Section on Networks and Mobile Communications)
Category: 
Keyword: 
mobile communication networksself-oraganizing networksdistributed systems
  Summary |  Full Text:PDF (683.1KB)

Traffic Distributing Algorithm for Multicast Routing in Packet Type Networks
Hideki TODE  Yasuharu SAKAI  Miki YAMAMOTO  Hiromi OKADA  Yoshikazu TEZUKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/12/20
Vol. E74-B  No. 12  pp. 4051-4060
Type of Manuscript: Special Section PAPER (Special Issue on Network Control)
Category: 
Keyword: 
  Summary |  Full Text:PDF (833.6KB)