Takehiko KOBAYASHI


Automatic Determination of Phase Centers and Its Application to Precise Measurement of Spacecraft Antennas in a Small Anechoic Chamber
Yuzo TAMAKI Takehiko KOBAYASHI Atsushi TOMIKI 
Publication:   
Publication Date: 2018/02/01
Vol. E101-B  No. 2  pp. 364-372
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)
Category: Antennas Measurement
Keyword: 
antenna measurementphase centerthree antenna methodpolarization pattern method
 Summary | Full Text:PDF(5.5MB)

Wideband and Ultra Wideband Radio Propagation in Heavy Multipath Environments
Takehiko KOBAYASHI Miyuki HIROSE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 511-519
Type of Manuscript:  INVITED PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
Ultra-widebandwidebandradio propagationcommunication
 Summary | Full Text:PDF(2.4MB)

Analyses and Modeling of Ultra-Wideband On-Body Propagation Channels Depending on Population Density within an Elevator Cabin
Miyuki HIROSE Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 94-100
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: Implementation
Keyword: 
ultra-widebandwireless body area networksindoor channel measurementbody-shadowing
 Summary | Full Text:PDF(2.4MB)

Experimental Evaluation of Ultra Wideband Wireless Links within a Spacecraft for Replacing Wired Interface Buses
Shinichiro HAMADA Atsushi TOMIKI Tomoaki TODA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/05/01
Vol. E96-A  No. 5  pp. 927-934
Type of Manuscript:  Special Section PAPER (Special Section on Networked Control Systems: Theories & Applications)
Category: 
Keyword: 
ultra widebandsatellite buspropagation and transmission
 Summary | Full Text:PDF(2.8MB)

Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver
Kenichi TAKIZAWA Hirotaka YAMANE Huan-Bang LI Feng LU Kohei OHNO Takuji MOCHIZUKI Takashi OKADA Kunio YATA Hisashi NISHIKAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 285-292
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
ultra wideband (UWB)coexistencedetect-and-avoid (DAA)mobile WiMAX3GPP LTE
 Summary | Full Text:PDF(2.8MB)

Examination of Effective UWB Avoidance Based on Experiments for Coexistence with Other Wireless Systems
Huan-Bang LI Kunio YATA Kenichi TAKIZAWA Noriaki MIYAZAKI Takashi OKADA Kohei OHNO Takuji MOCHIZUKI Eishin NAKAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 274-284
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
UWBinterference avoidancesubcarrier nullificationnotchclearance spacing
 Summary | Full Text:PDF(4.4MB)

Measurements and Modeling of Ultra-Wideband Propagation Losses around the Human Body Dependent on Room Volume
Hironobu YAMAMOTO Masato KOIWAI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/12/01
Vol. E93-A  No. 12  pp. 2624-2633
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
ultra widebandwireless body area networksradio propagationpropagation losschannel model
 Summary | Full Text:PDF(2.2MB)

Channel Estimator Employing Narrowband Interference Detector of Wideband OFDM Receiver
Naohiko IWAKIRI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/12/01
Vol. E93-A  No. 12  pp. 2646-2653
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
antenna arraychannel estimationcognitive radiointerference detectionOFDMultra-wideband
 Summary | Full Text:PDF(1.4MB)

Development of an Implantable WBAN Path-Loss Model for Capsule Endoscopy
Takahiro AOYAGI Kenichi TAKIZAWA Takehiko KOBAYASHI Jun-ichi TAKADA Kiyoshi HAMAGUCHI Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/04/01
Vol. E93-B  No. 4  pp. 846-849
Type of Manuscript:  Special Section LETTER (Special Section on Information and Communication Technology for Wellness and Medical Applications)
Category: 
Keyword: 
wireless body area network (WBAN)implantable WBANcapsule endoscopypath loss model
 Summary | Full Text:PDF(220.9KB)

Ultra-Wideband Indoor Double-Directional Channel Estimation Using Transformation between Frequency and Time Domain Signals
Naohiko IWAKIRI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/09/01
Vol. E92-A  No. 9  pp. 2159-2166
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: Ultra Wideband System
Keyword: 
antenna arraydouble-directional channel estimationmultiple signal classificationpersonal area networkradio channel measurement and estimationultra-wideband propagation
 Summary | Full Text:PDF(1.4MB)

FOREWORD
Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3093-3094
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(57.1KB)

Measurement of Ultra Wideband Radar Cross Sections of an Automobile at Ka Band Using Circular Polarizations
Hideyuki OSAKI Takehiko NISHIDE Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3190-3196
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
ultra widebandvehicular radarradar cross sectionautomobilecircular polarization
 Summary | Full Text:PDF(972.6KB)

Ultra Wideband Electromagnetic Phantoms for Antennas and Propagation Studies
Hironobu YAMAMOTO Jian ZHOU Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3173-3182
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
ultra widebandelectromagnetic phantompropagationmicrowave
 Summary | Full Text:PDF(1.6MB)

Effects of Bragg Scattering on Ultra-Wideband Signal Transmission from Periodic Surfaces
Hiroaki TSUCHIYA Navarat LERTSIRISOPON Jun-ichi TAKADA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/02/01
Vol. E91-B  No. 2  pp. 536-542
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
Bragg scatteringultra-widebandUWB transmissionpropagation
 Summary | Full Text:PDF(908.8KB)

FOREWORD
Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/11/01
Vol. E90-A  No. 11  pp. 2343-2344
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(53.6KB)

Ultra-Wideband Time-of-Arrival and Angle-of-Arrival Estimation Using a Signal Model Based on Measurements
Naohiko IWAKIRI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/11/01
Vol. E90-A  No. 11  pp. 2345-2353
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: UWB
Keyword: 
Cramer-Rao boundmultiple signal classificationradio channel measurement and estimationultra-wideband propagation
 Summary | Full Text:PDF(1.3MB)

Simulation of Interference Effects from MB-OFDM and DS-UWB to a QPSK Digital Transmission System
Atsushi TOMIKI Idnin PASYA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3059-3065
Type of Manuscript:  Special Section PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
UWBMB-OFDMDS-UWBinterferenceequivalent baseband system
 Summary | Full Text:PDF(1MB)

Proposal for an MB-OFDM UWB System Simultaneously Undertaking Ranging and Communications
Yasuhiro OHHIKATA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3075-3081
Type of Manuscript:  Special Section PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
ultra widebandrangingMB-OFDM
 Summary | Full Text:PDF(755.1KB)

Measurements and Characterization of Ultra Wideband Propagation Channels in a Passenger-Car Compartment
Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3089-3094
Type of Manuscript:  Special Section PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
ultra widebandpropagationintracar LAN
 Summary | Full Text:PDF(842.4KB)

Development of Ultra-Wideband Short-Range Impulse Radar System for Vehicular Applications
Kiyoshi HAMAGUCHI Hiroyo OGAWA Takehiko KOBAYASHI Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/10/01
Vol. E88-C  No. 10  pp. 1922-1931
Type of Manuscript:  INVITED PAPER (Special Section on Recent Technologies on Devices, Circuits, and Systems for Millimeter-wave ITS Applications)
Category: 
Keyword: 
impulse radarultra widebandUWBvehicularsystemlaboratory experimentintelligent transport systemITS
 Summary | Full Text:PDF(2.9MB)

Double Directional Ultra Wideband Channel Characterization in a Line-of-Sight Home Environment
Katsuyuki HANEDA Jun-ichi TAKADA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/09/01
Vol. E88-A  No. 9  pp. 2264-2271
Type of Manuscript:  Special Section PAPER (Special Section on Ultra Wideband Systems)
Category: Propagation
Keyword: 
ultra widebandUWB channel modelsSAGE algorithmspatio-temporal analysis
 Summary | Full Text:PDF(1.3MB)

Ultra Wideband Signal Propagation in Desktop Environments
Yoshiyuki SUZUKI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/09/01
Vol. E88-A  No. 9  pp. 2272-2278
Type of Manuscript:  Special Section PAPER (Special Section on Ultra Wideband Systems)
Category: Propagation
Keyword: 
ultra widebandpropagationfrequency diversityfading depthblocking
 Summary | Full Text:PDF(744.6KB)

Ray-Tracing Simulation of Path-Loss in Urban-Microcellular Environments under Road Traffic Conditions
Hiroyuki SHIMIZU Makoto ABO Chikao NAGASAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/01/01
Vol. E87-B  No. 1  pp. 195-199
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
ray-tracing simulationmobile radio propagationpath lossurbanLOSmicrocellRayleighroad traffic
 Summary | Full Text:PDF(570.4KB)

CDMA Transmission Power Control Suitable for Multimedia IP Packet Communications
Masahiro ISHIBA Hideki SATOH Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2345-2353
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
TCPCBRCDMApacket communicationstransmission power control
 Summary | Full Text:PDF(648.6KB)

Self-Similarity in Cell Dwell Time Caused by Terminal Motion and Its Effects on Teletraffic of Cellular Communication Networks
Hirotoshi HIDAKA Kazuyoshi SAITOH Noriteru SHINAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1445-1453
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
teletrafficcell dwell timechannel occupancy timeself-similaritymobile communication networks
 Summary | Full Text:PDF(928.7KB)

Non Line-of-Sight Microwave Propagation Characterization for Personal Communications with High-Tier Base Station Antenna
Kozo SAKAWA Hironari MASUI Masanori ISHII Hiroyuki SHIMIZU Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1569-1577
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
microwave propagationnon line-of-sighthigh-tier base stationpath lossrelative loss
 Summary | Full Text:PDF(484KB)

Effects of Road Traffic on Probability Distributions of Path-Loss in an Urban Microcellular Environment
Hiroyuki SHIMIZU Hironari MASUI Masanori ISHII Kozo SAKAWA Takehiko KOBAYASHI Makoto ABO Chikao NAGASAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1578-1584
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
path lossLOSmicrocellRayleighroad traffic
 Summary | Full Text:PDF(1.2MB)

Terminal Migration Model in which Cell Dwell Time is Defined by Different Probability Distributions in Different Cells
Hirotoshi HIDAKA Kazuyoshi SAITOH Noriteru SHINAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1693-1695
Type of Manuscript:  Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
terminal migration modelcell dwell timemobile terminalprobability distributionmobile communication networks
 Summary | Full Text:PDF(389.3KB)

CDMA Transmission Power Control at Mobile Terminals for IP Packet Communications in Fading and Multi-Cell Environments
Hideki SATOH Masahiro ISHIBA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 3058-3067
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
TCPtransmission power controlfadingmobile
 Summary | Full Text:PDF(764.4KB)

Validation of Equivalent Received Bandwidth to Characterize Received Signal Level Distribution through Experiment and Simulation
Hiroaki NAKABAYASHI Jiang YAN Hironari MASUI Masanori ISHII Kozo SAKAWA Hiroyuki SHIMIZU Takehiko KOBAYASHI Shigeru KOZONO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/09/01
Vol. E84-B  No. 9  pp. 2550-2559
Type of Manuscript:  Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category: Propagation
Keyword: 
mobile propagationreceived signal level distributiondelay profileequivalent received bandwidthpower ratio
 Summary | Full Text:PDF(1.5MB)

Distributed Power Control for Real-Time and TCP Packet Communications over CDMA Wireless Link
Hideki SATOH Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/07/01
Vol. E84-A  No. 7  pp. 1702-1713
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
CDMATCPtransmission power controldistributed controlwireless
 Summary | Full Text:PDF(880KB)

Downlink Transmission Power Control for CDMA/Shared-TDD Packet Communications in Cellular Environments
Kazuo MORI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/06/01
Vol. E84-B  No. 6  pp. 1622-1630
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
asymmetric communication systemtime division duplexingCDMApacket communicationtransmission power control
 Summary | Full Text:PDF(561.2KB)

Microwave Propagation Characteristics in an Urban Quasi Line-of-Sight Environment under Different Traffic Conditions
Hironari MASUI Masanori ISHII Satoshi TAKAHASHI Hiroyuki SHIMIZU Takehiko KOBAYASHI Masami AKAIKE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/05/01
Vol. E84-B  No. 5  pp. 1431-1439
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
mobile communicationradio propagationbreak pointdelay spreadmicrowave
 Summary | Full Text:PDF(644.2KB)

Vehicle Motion in Large and Small Cities and Teletraffic Characterization in Cellular Communication Systems
Kazuyoshi SAITOH Hirotoshi HIDAKA Noriteru SHINAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/04/01
Vol. E84-B  No. 4  pp. 805-813
Type of Manuscript:  Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
mobile communicationteletrafficmobility characterizationcellular systemGPS
 Summary | Full Text:PDF(445KB)

A Ray-Tracing-Based Characterization and Verification of the Spatio-Temporal Channel Model for Future Wideband Wireless Systems
Houtao ZHU Jun-ichi TAKADA Kiyomichi ARAKI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 644-652
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
channel modelingspatio-temporal channel modelray-tracingrandom-phase approach
 Summary | Full Text:PDF(1MB)

Teletraffic Characteristics of Cellular Communication for Different Types of Vehicle Motion
Hirotoshi HIDAKA Kazuyoshi SAITOH Noriteru SHINAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 558-565
Type of Manuscript:  Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
cellular communicationteletrafficvehicle motionhandoffself-similarity
 Summary | Full Text:PDF(566KB)

Diffusion Model for Multimedia and Mobile Traffic Based on Population Process for Active Users in a Micro-Cell
Shin'ichiro SHINOMIYA Masaki AIDA Kazuyoshi SAITOH Noriteru SHINAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/08/25
Vol. E83-B  No. 8  pp. 1827-1833
Type of Manuscript:  Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
mobile communicationmultimediaself-similaritytraffic
 Summary | Full Text:PDF(667.3KB)

Teletraffic Characteristics in Prioritized Handoff Control Method Considering Reattempt Calls
Noriteru SHINAGAWA Takehiko KOBAYASHI Keisuke NAKANO Masakazu SENGOKU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/08/25
Vol. E83-B  No. 8  pp. 1810-1818
Type of Manuscript:  Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
mobile communicationhandoffpriority controltrafficreattempt calls
 Summary | Full Text:PDF(728.2KB)

LOS and NLOS Path-Loss and Delay Characteristics at 3.35 GHz in a Residential Environment
Hiroyuki SHIMIZU Hironari MASUI Masanori ISHII Kozo SAKAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/07/25
Vol. E83-A  No. 7  pp. 1356-1364
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
mobile communicationnon-line-of-sightpath lossdelay spreadresidential area
 Summary | Full Text:PDF(1.5MB)

Adaptive Transmit Permission Probability Control in CDMA Cellular Packet Communications with Site Diversity
Kazuo MORI Takehiko KOBAYASHI Takaya YAMAZATO Akira OGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/07/25
Vol. E83-B  No. 7  pp. 1445-1453
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
fairnessCDMApacket communicationtransmit permission probabilityadaptive control
 Summary | Full Text:PDF(972.3KB)

Evaluation of Teletraffic in Cellular Communication Systems Using Multi-Connections for Soft Handoff
Noriteru SHINAGAWA Takehiko KOBAYASHI Keisuke NAKANO Masakazu SENGOKU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/07/25
Vol. E83-A  No. 7  pp. 1318-1327
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
mobile communicationsoft-handofftraffic characteristicCDMAmicro cell
 Summary | Full Text:PDF(1.1MB)

Distance Dependence of Microwave Delay Spreads Measured in Urban Quasi Line-of-Sight Environments
Hironari MASUI Koichi TAKAHASHI Satoshi TAKAHASHI Kouzou KAGE Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/12/25
Vol. E82-B  No. 12  pp. 1997-2003
Type of Manuscript:  Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems)
Category: 
Keyword: 
mobile communicationradio propagationdelay spreadbreak pointmicrowave
 Summary | Full Text:PDF(1.1MB)

Stochastic Prediction of Transmission Performance in Mobile Communication Systems Employing Anti-Multipath Techniques in Urban Propagation Environments
Satoshi TAKAHASHI Takehiko KOBAYASHI Kouzou KAGE Koichi TAKAHASHI Hironari MASUI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/12/25
Vol. E82-B  No. 12  pp. 1987-1996
Type of Manuscript:  Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems)
Category: 
Keyword: 
broadband mobile communicationtransmission performancemultipath propagationcharacteristic function methodRAKE receptionparallel transmission
 Summary | Full Text:PDF(1.1MB)

Vehicle Mobility Characterization Based on Measurements and Its Application to Cellular Communication Systems
Takehiko KOBAYASHI Noriteru SHINAGAWA Yoneo WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/12/25
Vol. E82-B  No. 12  pp. 2055-2060
Type of Manuscript:  Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems)
Category: 
Keyword: 
cellular communicationsmobility characterizationteletrafficGPS
 Summary | Full Text:PDF(765.8KB)

Service Fairness in CDMA Cellular Packet Systems with Site Diversity Reception
Kazuo MORI Takehiko KOBAYASHI Takaya YAMAZATO Akira OGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/12/25
Vol. E82-B  No. 12  pp. 1964-1973
Type of Manuscript:  Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems)
Category: 
Keyword: 
service fairnessCDMApacket communicationslotted-ALOHAtransmission power controlpermission probability control
 Summary | Full Text:PDF(948.3KB)

Difference of Path-Loss Characteristics due to Mobile Antenna Heights in Microwave Urban Propagation
Hironari MASUI Koichi TAKAHASHI Satoshi TAKAHASHI Kouzou KAGE Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1144-1150
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
microwave propagationurban areaspath lossbreak pointmobile antenna height
 Summary | Full Text:PDF(927.9KB)

Delay Profile Measurement System for Microwave Broadband Transmission and Analysis of Delay Characteristics in an Urban Environment
Hironari MASUI Koichi TAKAHASHI Satoshi TAKAHASHI Kouzou KAGE Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1287-1292
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Systems
Keyword: 
microwave propagationurban areasdelay profiledelay spreadmobile antenna height
 Summary | Full Text:PDF(948.1KB)

Path Loss Modeling of Line-of-Sight Microwave Urban Propagation with Low-Height Antenna Mobile Stations
Koichi TAKAHASHI Hironari MASUI Satoshi TAKAHASHI Kouzou KAGE Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1330-1333
Type of Manuscript:  Special Section LETTER (Special Issue on Microwave and Millimeter Wave Technology)
Category: 
Keyword: 
mobile communicationradio propagationpath lossexcess losslow antenna height
 Summary | Full Text:PDF(428.4KB)

Evaluation of Shared Bandwidth for Mobile Multimedia Networks Using a Diffusion Model
Yoneo WATANABE Noriteru SHINAGAWA Takehiko KOBAYASHI Masaki AIDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1287-1291
Type of Manuscript:  Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
packetshared bandwidthmultimediamobile communicationself-similarity
 Summary | Full Text:PDF(216KB)

Mobile ATM Network Using Concentrated Base Station Architecture
Noriteru SHINAGAWA Yoneo WATANABE Takehiko KOBAYASHI Keisuke NAKANO Masakazu SENGOKU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1185-1193
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
mobile communicationATMmultimediahandoffmicrocell
 Summary | Full Text:PDF(948.3KB)

Load-Based Transmission Control for CDMA Cellular Packet Systems with Rayleigh Fading Channels
Kazuo MORI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1151-1160
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
CDMApacket communicationpower controlprocessing gain controlfading channel
 Summary | Full Text:PDF(754KB)

A Lossless Handover Method for Video Transmission in Mobile ATM Networks and Its Experimental Evaluation
Masaya NISHIO Noriteru SHINAGAWA Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1194-1201
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
mobile ATM networkhandovercell losscell delay variationMPEG2subjective assessment
 Summary | Full Text:PDF(1.1MB)

An Experimental SAR Estimation of Human Head Exposure to UHF Near Fields Using Dry-Phantom Models and a Thermograph
Toshio NOJIMA Sadayuki NISHIKI Takehiko KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/06/25
Vol. E77-B  No. 6  pp. 708-713
Type of Manuscript:  INVITED PAPER (Special Issue on Biological Effects of Electromagnetic Fields)
Category: 
Keyword: 
SARportable radiodry phantomradio-frequency exposurethermograph
 Summary | Full Text:PDF(794.7KB)

Estimation of Electric Field Intensity in the Fresnel Region of Colinear Array Antennas
Takehiko KOBAYASHI Toshio NOJIMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/06/25
Vol. E77-B  No. 6  pp. 749-753
Type of Manuscript:  Special Section PAPER (Special Issue on Biological Effects of Electromagnetic Fields)
Category: 
Keyword: 
near fieldcolinear array antennanear field measurementradiofrequency safety
 Summary | Full Text:PDF(352.3KB)

Numerical Evaluation of Analysis Methods for Square-Opening Meshes
Takehiko KOBAYASHI Makoto KIJIMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/04/25
Vol. E71-E  No. 4  pp. 307-308
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1988 Spring Convention IEICE)
Category: Electromagnetic Theory and Microwave Circuits
Keyword: 
 Summary | Full Text:PDF(140.5KB)