Takeshi HASHIMOTO


Mobile Agent-Based Information Dissemination Scheme Using Location Information in Vehicular Ad Hoc Networks
Takeshi HASHIMOTO Junich AOKI Tomoyuki OHTA Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/09/01
Vol. E99-B  No. 9  pp. 1958-1966
Type of Manuscript:  Special Section PAPER (Special Section on Integration Technologies of Ambient Intelligence and Sensor Networks)
Category: 
Keyword: 
VANETsinformation disseminationmobile agentslocation information
 Summary | Full Text:PDF(3MB)

Mobile Agent Migration Mechanism Adaptive to Service Dissemination and Collection for Mobile Ad Hoc Networks
Tomoyuki OHTA Shuhei ISHIZUKA Takeshi HASHIMOTO Yoshiaki KAKUDA Atsushi ITO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/03/01
Vol. E97-B  No. 3  pp. 610-619
Type of Manuscript:  PAPER
Category: Network
Keyword: 
mobile ad hoc networkservice discoverymobile agent
 Summary | Full Text:PDF(1.3MB)

Performance of Coded CS-CDMA/CP with M-ZCZ Code over a Fast Fading Channel
Li YUE Chenggao HAN Nalin S. WEERASINGHE Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/09/01
Vol. E93-B  No. 9  pp. 2381-2388
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
convolutional spreading CDMAM-ZCZ codefast fadingmultiuser interferencechannel estimationsignal-to-interference ratio
 Summary | Full Text:PDF(621.8KB)

A New Construction Method of Zero-Correlation Zone Sequences Based on Complete Complementary Codes
Chenggao HAN Takeshi HASHIMOTO Naoki SUEHIRO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/12/01
Vol. E91-A  No. 12  pp. 3698-3702
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and its Applications in Communications)
Category: Sequence
Keyword: 
complementary sequencesGolay's sequencecomplete complementary codeN-shift cross orthogonal sequencezero correlation zone
 Summary | Full Text:PDF(159.4KB)

Analysis of Symmetric Cancellation Coding for OFDM over a Multi-Path Rayleigh Fading Channel
Abdullah S. ALARAIMI Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/09/01
Vol. E90-A  No. 9  pp. 1956-1964
Type of Manuscript:  PAPER
Category: Communication Theory and Signals
Keyword: 
symmetric cancellation coding (SCC)OFDMinter-carrier interference (ICI)time-varying (fast) Rayleigh fadingpeak-to-average power ratio (PAPR)
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CS-CDMA/CP with ZCZ Codes from an M-Sequence and Its Performance for Downlink Transmission over a Multipath Fading Channel
Nalin S. WEERASINGHE Chenggao HAN Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/06/01
Vol. E90-A  No. 6  pp. 1204-1213
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
zero correlation zone (ZCZ) codeM-sequenceCS-CDMA/CPmulti-user interferencePAPR
 Summary | Full Text:PDF(475.8KB)

Two Schemes for an Overloaded Space-Time Spreading System over a Flat Rayleigh Fading MIMO Channel
Dianjun CHEN Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/03/01
Vol. E89-A  No. 3  pp. 798-806
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
WBE sequencesspace-time spreadingHurwitz-Radon family of matricesdiversity orderoverloaded systemCDMA
 Summary | Full Text:PDF(314.3KB)

Performance Analysis of Polynomial Cancellation Coding for OFDM Systems over Time-Varying Rayleigh Fading Channels
Abdullah S. ALARAIMI Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 471-477
Type of Manuscript:  Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
polynomial cancellation coding (PCC)OFDMinter-carrier interference (ICI)multi-path fadingtime-varying (fast) fading
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Performance Analysis of MISO Downlink CDMA Systems over Rayleigh Fading Channels
Dianjun CHEN Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/09/01
Vol. E87-A  No. 9  pp. 2440-2447
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
transmit diversityCDMAmaximum likelihood receiver
 Summary | Full Text:PDF(287KB)

Reverse Link Capacity of a Wireless Multimedia CDMA System with Power and Processing Gain Control in Conjunction with CCI Cancellers
Nasser HAMAD Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 347-355
Type of Manuscript:  PAPER
Category: Communication Theory and Signals
Keyword: 
multimedia CDMAprocessing gain controlpower controlsystem capacityCCI canceller
 Summary | Full Text:PDF(323.7KB)

Reverse Link Capacity of a Wireless Multimedia CDMA System with Transmission Power Control and CCI Canceller
Nasser HAMAD Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/12/25
Vol. E82-A  No. 12  pp. 2706-2719
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
multimedia CDMApower controlsystem capacityCCI canceller
 Summary | Full Text:PDF(1017KB)

Generalized Permutation Alphabets and Generating Groups
The Cuong DINH Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/01/25
Vol. E81-A  No. 1  pp. 147-155
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
trellis-coded modulation (TCM )geometrically uniform (GU ) codesmultidimensional (MD ) constellationspermutationslattice
 Summary | Full Text:PDF(784.3KB)

On The Construcion of Geometrically Uniform Codes with LXMPSK Constellations
The Cuong DINH Takeshi HASHIMOTO Shuichi ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/03/25
Vol. E80-A  No. 3  pp. 598-605
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
trellis coded modulation (TCM)geometrically uniform codesmultidimensional (MD) constellationspermutations
 Summary | Full Text:PDF(583.2KB)

An Algorithm for Designing a Pattern Classifier by Using MDL Criterion
Hideaki TSUCHIYA Shuichi ITOH Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/06/25
Vol. E79-A  No. 6  pp. 910-920
Type of Manuscript:  PAPER
Category: Algorithms and Data Structures
Keyword: 
classifiernoiseless codingMDL criterionbinary tree structurecontext gathering
 Summary | Full Text:PDF(798.4KB)

ECG Data Compression by Using Wavelet Transform
Jie CHEN Shuichi ITOH Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1993/12/25
Vol. E76-D  No. 12  pp. 1454-1461
Type of Manuscript:  Special Section PAPER (Special Section on ECG Data Compression)
Category: 
Keyword: 
ECGwavelet transformoptimum quantization
 Summary | Full Text:PDF(566.5KB)

Wavelet Pyramid Image Coding with Predictable and Controllable Subjective Picture Quality
Jie CHEN Shuichi ITOH Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/09/25
Vol. E76-A  No. 9  pp. 1458-1468
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
image codingwavelet transformsubjective picture qualityoptimum solution
 Summary | Full Text:PDF(1.1MB)

Scalar Quantization Noise Analysis and Optimal Bit Allocation for Wavelet Pyramid Image Coding
Jie CHEN Shuichi ITOH Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/09/25
Vol. E76-A  No. 9  pp. 1502-1514
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
image codingwavelet transformnoise analysisoptimal bit allocation
 Summary | Full Text:PDF(1.3MB)

Comparison of Erasure-and-Error Threshold Decoding Schemes
Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/05/25
Vol. E76-A  No. 5  pp. 820-827
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
erasure-and-error decodingthreshold decodingerror detection codingblock coding
 Summary | Full Text:PDF(533.2KB)

Block Decodable Unit Memory Codes
Takeshi HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/09/25
Vol. E74-A  No. 9  pp. 2563-2570
Type of Manuscript:  Special Section PAPER (Special Issue on Information Theory and Its Applications)
Category: 
Keyword: 
 Summary | Full Text:PDF(523.7KB)