Masahiro FUJII


Iterative Frequency Offset Estimation Based on ML Criterion for OFDM Systems
Masahiro FUJII Masaya ITO 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 2732-2737
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Communication Theory and Systems
Keyword: 
frequency offsetorthogonal frequency division multiplexingmaximum likelihooditerationand mean squared error
 Summary | Full Text:PDF(647.1KB)

Blind Channel Estimation by EM Algorithm for OFDM Systems
Hirokazu ABE Masahiro FUJII Takanori IWAMATSU Hiroyuki HATANO Atsushi ITO Yu WATANABE 
Publication:   
Publication Date: 2017/01/01
Vol. E100-A  No. 1  pp. 210-218
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
blind channel estimationOFDMEM algorithmchannel frequency response correlationfixed wireless communication systems
 Summary | Full Text:PDF(1.2MB)

Distance Estimation Based on Statistical Models of Received Signal Strength
Masahiro FUJII Yuma HIROTA Hiroyuki HATANO Atsushi ITO Yu WATANABE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 199-203
Type of Manuscript:  Special Section LETTER (Special Section on Wideband Systems)
Category: 
Keyword: 
distance estimationreceived signal strengthstatistical modelmean square error
 Summary | Full Text:PDF(1MB)

Indoor Positioning Based on Fingerprinting Method by Incoming GPS Signals
Masayuki OCHIAI Hiroyuki HATANO Masahiro FUJII Atsushi ITO Yu WATANABE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 319-322
Type of Manuscript:  Special Section LETTER (Special Section on Intelligent Transport Systems)
Category: 
Keyword: 
indoor positioningGNSSGPSfingerprintinglocalization
 Summary | Full Text:PDF(1.1MB)

Error Reduction by Reflected Signals in Automotive Radar Network Systems
Hiroyuki HATANO Masahiro FUJII Atsushi ITO Yu WATANABE Yusuke YOSHIDA Takayoshi NAKAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 597-605
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
target detectionradar networkforward-looking radarmultiple radars
 Summary | Full Text:PDF(2.6MB)

Positioning Method by Two GNSS Satellites and Distance Sensor in Urban Area
Hiroyuki HATANO Tomoya KITANI Masahiro FUJII Atsushi ITO Yu WATANABE Hironobu ONISHI Toru AOKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/01/01
Vol. E98-A  No. 1  pp. 275-283
Type of Manuscript:  Special Section PAPER (Special Section on Intelligent Transport Systems)
Category: 
Keyword: 
GNSSGPSGlobal Positioning SystemlocalizationmultipathNLOSshielded signals
 Summary | Full Text:PDF(1.8MB)

Primary Signal to Noise Ratio Estimation Based on AIC for UWB Systems
Masahiro FUJII Yu WATANABE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 264-273
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
UWBMB-OFDMDAAMLAIC and PSNR
 Summary | Full Text:PDF(1.4MB)

Interference Detection Based on AIC Using EM Algorithm for UWB MB-OFDM Systems
Masahiro FUJII Atsushi MINAKAWA Yu WATANABE Makoto ITAMI Kohji ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3130-3139
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
UWB MB-OFDMinterference detectionAkaike Information Criterion and EM algorithm
 Summary | Full Text:PDF(776.9KB)

Joint Estimation of Frequency Offset and Channel Frequency Response Using EM Algorithm for OFDM Systems
Masahiro FUJII Makoto ITAMI Kohji ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3123-3130
Type of Manuscript:  Special Section PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
OFDM systemsfrequency offsetchannel frequency responsesEM algorithmNewton algorithm
 Summary | Full Text:PDF(503.6KB)

Signal Design to Optimize Trade-Off between Bandwidth Efficiency and Power Efficiency in Uplink CDMA Systems
Atsurou HANDA Masahiro FUJII Makoto ITAMI Kohji ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3032-3041
Type of Manuscript:  Special Section PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
DS/CDMAMC/CDMAfrequency-domain processingbandwidth efficiencypower efficiencysignal design
 Summary | Full Text:PDF(654.6KB)

Tree Search Detection Based on LLR Using M Algorithm in MC-CDMA Systems
Yoshihito MORISHIGE Masahiro FUJII Makoto ITAMI Kohji ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/10/01
Vol. E89-A  No. 10  pp. 2622-2629
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum
Keyword: 
MC-CDMAmaximum likelihood detectortree structureM algorithmLLRQRD-M algorithm
 Summary | Full Text:PDF(731.5KB)

The Optimum Channel Estimation for Coherent Receivers in Multicarrier CDMA System with Antenna Array
Masahiro FUJII Rie SHIMIZU Makoto ITAMI Kohji ITOH 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 365-374
Type of Manuscript:  Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
uplink-MC/CDMAfrequency and spatial diversity effectschannel estimation and MAP criterion
 Summary | Full Text:PDF(1.4MB)

Low-Voltage, Low-Power, High-Speed 0.25-µm GaAs HEMT Delay Flip-Flops
Tadayoshi ENOMOTO Atsunori HIROBE Masahiro FUJII Nobuhide YOSHIDA Shuji ASAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/11/25
Vol. E83-C  No. 11  pp. 1776-1787
Type of Manuscript:  PAPER
Category: Integrated Electronics
Keyword: 
GaAsHEMTdelay latchdelay flip-floppower dissipation
 Summary | Full Text:PDF(3.2MB)

Performance of Frequency-Division CDMA Systems for Channels with Frequency Selective Fading
Masahiro FUJII Makoto ITAMI Kohji ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/25
Vol. E83-A  No. 11  pp. 2093-2101
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
frequency-division CDMAfrequency selective fading channelcoherence bandwidthfrequency diversity
 Summary | Full Text:PDF(959.7KB)

ECL-Compatible Low-Power-Consumption 10-Gb/s GaAs 8:1 Multiplexer and 1:8 Demultiplexer
Nobuhide YOSHIDA Masahiro FUJII Takao ATSUMO Keiichi NUMATA Shuji ASAI Michihisa KOHNO Hirokazu OIKAWA Hiroaki TSUTSUI Tadashi MAEDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/25
Vol. E82-C  No. 11  pp. 1992-1999
Type of Manuscript:  Special Section PAPER (Special Issue on High-Frequency/High-Speed Devices for Information and Communication Systems in the 21st Century)
Category: Low Power-Consumption RF ICs
Keyword: 
multiplexerdemultiplexerGaAs10 Gb/sECL-compatiblelow power consumption
 Summary | Full Text:PDF(2.6MB)

0.21-fJ GaAs DCFL Circuits Using 0.2-µm Y-Shaped Gate AlGaAs/InGaAs E/D-HJFETs
Shigeki WADA Masatoshi TOKUSHIMA Masaoki ISHIKAWA Nobuhide YOSHIDA Masahiro FUJII Tadashi MAEDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/03/25
Vol. E82-C  No. 3  pp. 491-497
Type of Manuscript:  Special Section PAPER (Special Issue on Ultra-High-Speed IC and LSI Technology)
Category: Compound Semiconductor Devices
Keyword: 
GaAsheterojunction FETY-shaped gateDCFLlow supply voltage
 Summary | Full Text:PDF(378.8KB)

A 1.3 V Supply Voltage AlGaAs/InGaAs HJFET SCFL D-FF Operating at up to 10 Gbps
Masahiro FUJII Tadashi MAEDA Yasuo OHNO Masatoshi TOKUSHIMA Masaoki ISHIKAWA Muneo FUKAISHI Hikaru HIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/04/25
Vol. E79-C  No. 4  pp. 512-517
Type of Manuscript:  Special Section PAPER (Special Issue on Ultra-High-Speed LSIs)
Category: 
Keyword: 
low powerhigh speedGaAsheterojunction FETSCFLlogic swinglow supply voltageD-FF
 Summary | Full Text:PDF(698.8KB)