Nobuo FUNABIKI


Universal Scoring Function Based on Bias Equalizer for Bias-Based Fingerprinting Codes
Minoru KURIBAYASHI Nobuo FUNABIKI 
Publication:   
Publication Date: 2018/01/01
Vol. E101-A  No. 1  pp. 119-128
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
bias-based fingerprinting codeuniversal scoring functionrelaxed marking assumption
 Summary | Full Text:PDF(777.5KB)

DCT-OFDM Watermarking Scheme Based on Communication System Model
Minoru KURIBAYASHI Shogo SHIGEMOTO Nobuo FUNABIKI 
Publication:   
Publication Date: 2017/04/01
Vol. E100-A  No. 4  pp. 944-952
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and Its Applications in Communications)
Category: Spread Spectrum Technologies and Applications
Keyword: 
spread spectrumOFDMQIMerror correcting code
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A Cooking-Step Scheduling Algorithm with Guidance System for Homemade Cooking
Yukiko MATSUSHIMA Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/08/01
Vol. E98-D  No. 8  pp. 1439-1448
Type of Manuscript:  PAPER
Category: Fundamentals of Information Systems
Keyword: 
homemade cookingcooking modelcooking-step schedulingalgorithmexhaustive searchsimulated annealing
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Revocable Group Signatures with Compact Revocation List Using Accumulators
Toru NAKANISHI Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/01/01
Vol. E98-A  No. 1  pp. 117-131
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Based Cryptography
Keyword: 
anonymitygroup signaturesrevocationsaccumulators
 Summary | Full Text:PDF(635KB)

An Anonymous Reputation System with Reputation Secrecy for Manager
Toru NAKANISHI Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2325-2335
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
reputation systemanonymityanonymous credentialspairings
 Summary | Full Text:PDF(568.9KB)

Efficient Proofs for CNF Formulas on Attributes in Pairing-Based Anonymous Credential System
Nasima BEGUM Toru NAKANISHI Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2422-2433
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Information Security
Keyword: 
anonymityanonymous credentialsattributesCNF formulas
 Summary | Full Text:PDF(878.9KB)

An Access-Point Aggregation Approach for Energy-Saving Wireless Local Area Networks
Md. Ezharul ISLAM Nobuo FUNABIKI Toru NAKANISHI Kan WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/12/01
Vol. E96-B  No. 12  pp. 2986-2997
Type of Manuscript:  Special Section PAPER (Special Section on Network and System Technologies for Sustainable Society)
Category: 
Keyword: 
wireless local area networkaccess-point aggregationNP-completealgorithmenergy-savingIEEE 802.11n
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A Fixed Backoff-Time Switching Method for CSMA/CA Protocol in Wireless Mesh Networks
Sritrusta SUKARIDHOTO Nobuo FUNABIKI Toru NAKANISHI Kan WATANABE Shigeto TAJIMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/04/01
Vol. E96-B  No. 4  pp. 1019-1029
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
wireless mesh networkCSMA/CA protocolfixed backoff-time switching (FBS)real-time applicationQualNet
 Summary | Full Text:PDF(2.3MB)

Forward-Secure Group Signatures from Pairings
Toru NAKANISHI Yuta HIRA Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2007-2016
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
anonymitygroup signaturesforward-securitypairings
 Summary | Full Text:PDF(441.3KB)

Extensions of the Access Point Allocation Algorithm for Wireless Mesh Networks
Walaa HASSAN Nobuo FUNABIKI Toru NAKANISHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/06/01
Vol. E93-B  No. 6  pp. 1555-1565
Type of Manuscript:  PAPER
Category: Terrestrial Radio Communications
Keyword: 
wireless mesh networkindoor environmentaccess point allocationmultiple gatewaysdependabilityalgorithm
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A WDS Clustering Algorithm for Wireless Mesh Networks
Shigeto TAJIMA Nobuo FUNABIKI Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/04/01
Vol. E93-D  No. 4  pp. 800-810
Type of Manuscript:  PAPER
Category: Fundamentals of Information Systems
Keyword: 
wireless mesh networkWDS clusteringgateway selectionNP-completeheuristic algorithmvariable depth search
 Summary | Full Text:PDF(582.8KB)

Revocable Group Signature Schemes with Constant Costs for Signing and Verifying
Toru NAKANISHI Hiroki FUJII Yuta HIRA Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/01/01
Vol. E93-A  No. 1  pp. 50-62
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Digital Signature
Keyword: 
anonymitygroup signaturesrevocationspairings
 Summary | Full Text:PDF(286KB)

An Access Point Allocation Algorithm for Indoor Environments in Wireless Mesh Networks
Tamer FARAG Nobuo FUNABIKI Toru NAKANISHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 784-793
Type of Manuscript:  Special Section PAPER (Special Section on Ad Hoc and Mesh Networking for Next Generation Access Systems)
Category: 
Keyword: 
access point allocationwireless mesh networkalgorithmindoor environmentNP-complete
 Summary | Full Text:PDF(411.2KB)

A Short Verifier-Local Revocation Group Signature Scheme with Backward Unlinkability
Toru NAKANISHI Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/09/01
Vol. E90-A  No. 9  pp. 1793-1802
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
group signaturerevocationbackward unlinkabilitybilinear mapsDLDH assumption
 Summary | Full Text:PDF(213.7KB)

Verifier-Local Revocation Group Signature Schemes with Backward Unlinkability from Bilinear Maps
Toru NAKANISHI Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/01/01
Vol. E90-A  No. 1  pp. 65-74
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Signatures
Keyword: 
group signaturerevocationunlinkabilitybilinear maps
 Summary | Full Text:PDF(220.6KB)

Group Signature Schemes with Membership Revocation for Large Groups
Toru NAKANISHI Nobuo FUNABIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/05/01
Vol. E89-A  No. 5  pp. 1275-1283
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
group signature schemesmembership revocationsignatures of knowledgestrong RSA assumption
 Summary | Full Text:PDF(208KB)

An Optical-Drop Wavelength Assignment Algorithm for Efficient Wavelength Reuse under Heterogeneous Traffic in WDM Ring Networks
Nobuo FUNABIKI Jun KAWASHIMA Toru NAKANISHI Kiyohiko OKAYAMA Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/05/01
Vol. E88-A  No. 5  pp. 1234-1240
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
WDMheuristic algorithmoptical-dropwavelength assignmentring networkNP-complete
 Summary | Full Text:PDF(252.7KB)

A Minimum Dead Space Algorithm for Generalized Isochronous Channel Reuse Problems in DQDB Networks
Nobuo FUNABIKI Jun KAWASHIMA Kiyohiko OKAYAMA Toru NAKANISHI Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/09/01
Vol. E87-B  No. 9  pp. 2692-2698
Type of Manuscript:  PAPER
Category: Network
Keyword: 
ICRPheuristic algorithmminimum dead spaceNP-completeIEEE 802.6DQDB
 Summary | Full Text:PDF(271KB)

P2PMM_router: A Two-Stage Heuristic Algorithm to Peer-to-Peer Multicast Routing Problems in Multihome Networks
Nobuo FUNABIKI Jun KAWASHIMA Shoji YOSHIDA Kiyohiko OKAYAMA Toru NAKANISHI Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1070-1076
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
peer-to-peer multicastreal-time communicationmultihome networkheuristic algorithmNP-complete
 Summary | Full Text:PDF(260.9KB)

A Quasi-Solution State Evolution Algorithm for Channel Assignment Problems in Cellular Networks
Nobuo FUNABIKI Toru NAKANISHI Tokumi YOKOHIRA Shigeto TAJIMA Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/05/01
Vol. E85-A  No. 5  pp. 977-987
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
CAPapproximation algorithmbenchmarkNP-hardcellular network
 Summary | Full Text:PDF(623.9KB)

Relaxation of Coefficient Sensitiveness to Performance for Neural Networks Using Neuron Filter through Total Coloring Problems
Yoichi TAKENAKA Nobuo FUNABIKI Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/09/01
Vol. E84-A  No. 9  pp. 2367-2370
Type of Manuscript:  LETTER
Category: Neural Networks and Bioengineering
Keyword: 
Hopfield neural networkparameter tuningneuron filtercoefficient sensitiveness
 Summary | Full Text:PDF(1.4MB)

A Proposal of Neuron Filter: A Constraint Resolution Scheme of Neural Networks for Combinatorial Optimization Problems
Yoichi TAKENAKA Nobuo FUNABIKI Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/09/25
Vol. E83-A  No. 9  pp. 1815-1823
Type of Manuscript:  PAPER
Category: Neural Networks and Bioengineering
Keyword: 
combinatorial optimization problemhopfileld-type neural networkN-queens problemboard-level routing problemneuron filter
 Summary | Full Text:PDF(570KB)

A Minimal-State Processing Search Algorithm for Graph Coloring Problems
Nobuo FUNABIKI Teruo HIGASHINO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/07/25
Vol. E83-A  No. 7  pp. 1420-1430
Type of Manuscript:  PAPER
Category: Graphs and Networks
Keyword: 
graph coloringsimulationheuristic algorithmMIPS_CLRDIMACS
 Summary | Full Text:PDF(406.6KB)

A Two-Stage Discrete Optimization Method for Largest Common Subgraph Problems
Nobuo FUNABIKI Junji KITAMICHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1999/08/25
Vol. E82-D  No. 8  pp. 1145-1153
Type of Manuscript:  PAPER
Category: Algorithm and Computational Complexity
Keyword: 
common subgraphisomorphicNP-completegreedy methoddiscrete descent methodsimulated annealing
 Summary | Full Text:PDF(396.2KB)

A Gradual Neural Network Algorithm for Broadcast Scheduling Problems in Packet Radio Networks
Nobuo FUNABIKI Junji KITAMICHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/05/25
Vol. E82-A  No. 5  pp. 815-824
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
neural networkpacket radio networkTDMA cyclebroadcast scheduling problem
 Summary | Full Text:PDF(1MB)

A Neural-Greedy Combination Algorithm for Board-Level Routing in FPGA-Based Logic Emulation Systems
Nobuo FUNABIKI Junji KITAMICHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/05/25
Vol. E81-A  No. 5  pp. 866-872
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
FPGAboard-level routingNP-completedigital neural networkgreedy algorithm
 Summary | Full Text:PDF(543.2KB)

A Massive Digital Neural Network for Total Coloring Problems
Nobuo FUNABIKI Junji KITAMICHI Seishi NISHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/09/25
Vol. E80-A  No. 9  pp. 1625-1629
Type of Manuscript:  Special Section LETTER (Special Section on Nonlinear Theory and its Applications)
Category: 
Keyword: 
neural networkdigital technologytotal coloringNP-completecombinatorial optimization
 Summary | Full Text:PDF(328KB)

A Digital Neural Network for Multilayer Channel Routing with Crosstalk Minimization
Nobuo FUNABIKI Junji KITAMICHI Seishi NISHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/09/25
Vol. E80-A  No. 9  pp. 1704-1713
Type of Manuscript:  PAPER
Category: Neural Networks
Keyword: 
crosstalkmultilayer channel routingneural networkdigital technologyNP-complete
 Summary | Full Text:PDF(748.1KB)

A Gradual Neural Network Approach for Time Slot Assignment in TDM Multicast Switching Systems
Nobuo FUNABIKI Junji KITAMICHI Seishi NISHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/06/25
Vol. E80-B  No. 6  pp. 939-947
Type of Manuscript:  PAPER
Category: Communication Networks and Services
Keyword: 
neural networktime slot assignmentTDN multicast switching systemcombinatorial optimization
 Summary | Full Text:PDF(644.3KB)

A Binary Neural Network Approach for Link Activation Problems in Multihop Radio Networks
Nobuo FUNABIKI Seishi NISHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/08/25
Vol. E79-B  No. 8  pp. 1086-1093
Type of Manuscript:  PAPER
Category: Communication Networks and Services
Keyword: 
multihop radio networklink activationNP-completeneural networkparallel algorithm
 Summary | Full Text:PDF(625.7KB)

Comparisons of Energy-Descent Optimization Algorithms for Maximum Clique Problems
Nobuo FUNABIKI Seishi NISHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/04/25
Vol. E79-A  No. 4  pp. 452-460
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
maximum cliqueNP-completeneural networkalgorithmenergy-descent opimization
 Summary | Full Text:PDF(605.7KB)

An Improved Neural Network for Channel Assignment Problems in Cellular Mobile Communication Systems
Nobuo FUNABIKI Seishi NISHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/08/25
Vol. E78-B  No. 8  pp. 1187-1196
Type of Manuscript:  Special Section PAPER (Special Issue on Technologies for High-Speed Mobile Communications)
Category: 
Keyword: 
cellular mobile communication systemchannel assignmentneural networkparallel algorithm
 Summary | Full Text:PDF(687.6KB)