Ushio YAMAMOTO


Optimization of Dynamic Allocation of Transmitter Power in a DS-CDMA Cellular System Using Genetic Algorithms
Jie ZHOU Yoichi SHIRAISHI Ushio YAMAMOTO Yoshikuni ONOZATO Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2436-2446
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication Systems
Keyword: 
digital cellular system (DS-CDMA)genetic algorithmpower control strategydynamic power allocationbalance of services
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An Analysis of the New Call Channel Limiting Technique for Mobile Users in One-Dimensional Cellular Networks
Sakchai THIPCHAKSURAT Ushio YAMAMOTO Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 550-557
Type of Manuscript:  Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
cellular networkschannel reservationhandoverblocking probabilitycapacity law
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Impact of Interference Suppression Techniques on Spectrum Overlaid Systems of TDMA/W-CDMA and N-CDMA/W-CDMA
Jie ZHOU Ushio YAMAMOTO Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 539-549
Type of Manuscript:  Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
digital cellular system (DS-CDMA)cluster sizefull rate channelsnotch filtersignal clipper
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Reconstruction Methods of Tree Structure of Orthogonal Spreading Codes for DS-CDMA
Ushio YAMAMOTO Haris HASANUDIN Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/25
Vol. E83-A  No. 11  pp. 2078-2084
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS-CDMAorthogonal codespreading factortree structurereconstruction
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Performance Estimation of the Forward Link in a Macrocell/Microcell Hierarchical Cellular System Using Code Division Multiple Access
Jie ZHOU Ushio YAMAMOTO Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/08/25
Vol. E83-B  No. 8  pp. 1819-1826
Type of Manuscript:  Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
hierarchical systemforward linkpower controldistance drivenC/I driven
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On the Feasibility of High Data Rate Services in Wireless System Using Code Division Multiple Access
Jie ZHOU Ushio YAMAMOTO Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/07/25
Vol. E83-A  No. 7  pp. 1347-1355
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
distance drivensoft handoffthroughputstatic analysisdynamic analysis
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On the Capacity and Outage Probability of a CDMA Hierarchical Mobile System with Perfect/Imperfect Power Control and Sectorization
Jie ZHOU Yoshikuni ONOZATO Ushio YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1161-1171
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
hierarchical macrocell/microcell architectureperfect/imperfect power controlperfect/imperfect sectorizationlog-normal distributionvoice activity monitoring
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Reuse Based Specification Support Method Using Mathematical Similarity
Ushio YAMAMOTO Eun-Seok LEE Norio SHIRATORI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/11/25
Vol. E79-A  No. 11  pp. 1752-1759
Type of Manuscript:  Special Section PAPER (Special Section on Description Models for Concurrent Systems and Their Applications)
Category: 
Keyword: 
FDTLTSsimilarityspecification reuse
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A Support Method for Specification Process Based on LTSs
Ushio YAMAMOTO Atsushi TOGASHI Norio SHIRATORI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/10/25
Vol. E77-A  No. 10  pp. 1656-1662
Type of Manuscript:  Special Section PAPER (Special Section on Net Theory and Its Applications)
Category: 
Keyword: 
FDTLTSsimilarityspecification reusespecification support
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