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IEICE Trans

Hiroshi HASEGAWA

Network Model Design for Major Metropolitan Areas Using Regional Railways Information in Japan for Beyond 5G Research
Takuji TACHIBANA Yusuke HIROTA Takehiro TSURITANI Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2026/02/01
Vol. E109-B  No. 2  pp. 138-146
Type of Manuscript:  INVITED PAPER (Special Section on Emerging Communication Technologies in Conjunction with Main Topics of ICETC2024)
Category: 
Keyword: 
metropolitan area network, beyond 5G, regional railway, network model design, major metropolitan areas, Aichi prefecture, Osaka prefecture, 
 Summary | Full Text:PDF
Demodulation Framework Based on Machine Learning for Unrepeated Transmission Systems
Ryuta SHIRAKI Yojiro MORI Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2024/01/01
Vol. E107-B  No. 1  pp. 39-48
Type of Manuscript:  Special Section PAPER (Special Section on Photonic Network Technology for Beyond 5G/6G Era)
Category: 
Keyword: 
digital coherent system, digital signal processing, demodulation, machine learning, 
 Summary | Full Text:PDF
Bandwidth Abundant Optical Networking Enabled by Spatially-Jointed and Multi-Band Flexible Waveband Routing
Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2024/01/01
Vol. E107-B  No. 1  pp. 16-26
Type of Manuscript:  INVITED PAPER (Special Section on Photonic Network Technology for Beyond 5G/6G Era)
Category: 
Keyword: 
flexible waveband routing, node architecture, large scale optical cross-connect, spatial division multiplexing, multi-band transmission, 
 Summary | Full Text:PDF
Policy-Based Grooming, Route, Spectrum, and Operational Mode Planning in Dynamic Multilayer Networks
Takafumi TANAKA Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2023/06/01
Vol. E106-B  No. 6  pp. 489-499
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical network, multilayer network, routing and spectrum assignment, grooming, adaptive modulation, dynamic path assignment, 
 Summary | Full Text:PDF
Metropolitan Area Network Model Design Using Regional Railways Information for Beyond 5G Research
Takuji TACHIBANA Yusuke HIROTA Keijiro SUZUKI Takehiro TSURITANI Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2023/04/01
Vol. E106-B  No. 4  pp. 296-306
Type of Manuscript:  POSITION PAPER
Category: Network
Keyword: 
metropolitan area network, Beyond 5G, regional railway, network model design, Tokyo metropolitan area, 
 Summary | Full Text:PDF
Fragmentation-Minimized Periodic Network-Bandwidth Expansion Employing Aligned Channel Slot Allocation in Flexible Grid Optical Networks
Hiroshi HASEGAWA Takuma YASUDA Yojiro MORI Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2021/12/01
Vol. E104-B  No. 12  pp. 1514-1523
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
semi-flexible grid, periodic network upgrade, fragment mitigation, 
 Summary | Full Text:PDF
Transmission-Quality-Aware Online Network Design and Provisioning Enabled by Optical Performance Monitoring
Keisuke KAYANO Yojiro MORI Hiroshi HASEGAWA Ken-ichi SATO Shoichiro ODA Setsuo YOSHIDA Takeshi HOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2020/06/01
Vol. E103-B  No. 6  pp. 670-678
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
network design, elastic optical network, performance monitoring, higher-order modulation, 
 Summary | Full Text:PDF
Assessment of Optical Node Architectures for Building Next Generation Large Bandwidth Networks
Mungun-Erdene GANBOLD Takuma YASUDA Yojiro MORI Hiroshi HASEGAWA Fumikazu INUZUKA Akira HIRANO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2020/06/01
Vol. E103-B  No. 6  pp. 679-689
Type of Manuscript:  PAPER
Category: Network
Keyword: 
ROADM, OXC, fiber cross-connect, routing and wavelength assignment, 
 Summary | Full Text:PDF
Architecture and Design of Coarse/Fine Hybrid Granular Routing Optical Networks
Yusaku ITO Yojiro MORI Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2020/02/01
Vol. E103-B  No. 2  pp. 118-129
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
coarse and fine granular routing, virtual direct links, routing and wavelength assignment, optical path networks, 
 Summary | Full Text:PDF
Improved Optical Amplification Efficiency by Using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks
Hitoshi TAKESHITA Keiichi MATSUMOTO Hiroshi HASEGAWA Ken-ichi SATO Emmanuel Le Taillandier de GABORY 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2019/08/01
Vol. E102-B  No. 8  pp. 1579-1589
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
multicore-EDFA, cladding pumping, recycle, power consumption, 
 Summary | Full Text:PDF
Assessment of Node- and Link- Level Blocking and Creating Cost-Effective Networks in the Era of Large Bandwidth Services
Shuhei YAMAKAMI Masaki NIWA Yojiro MORI Hiroshi HASEGAWA Ken-ichi SATO Fumikazu INUZUKA Akira HIRANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2019/03/01
Vol. E102-B  No. 3  pp. 510-521
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
networks, photonic network, wavelength routing, optical cross-connect, reconfigurable optical add/drop multiplexer, 
 Summary | Full Text:PDF
Fast Optical Circuit Switch for Intra-Datacenter Networking
Koh UEDA Yojiro MORI Hiroshi HASEGAWA Hiroyuki MATSUURA Kiyo ISHII Haruhiko KUWATSUKA Shu NAMIKI Toshio WATANABE Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2017/10/01
Vol. E100-B  No. 10  pp. 1740-1746
Type of Manuscript:  INVITED PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
switching, circuit, array waveguide devices, 
 Summary | Full Text:PDF
Dynamic Path Provisioning and Disruption-Free Reoptimization Algorithms for Bandwidth on-Demand Services Considering Fairness
Masahiro NAKAGAWA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2017/04/01
Vol. E100-B  No. 4  pp. 536-547
Type of Manuscript:  PAPER
Category: Network
Keyword: 
dynamic network control, fairness between paths, hitless rerouting, make before break routing, 
 Summary | Full Text:PDF
Survivable Grouped Routing Optical Networks with Dedicated Path Protection
Hiroshi HASEGAWA Yojiro MORI Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/07/01
Vol. E99-B  No. 7  pp. 1435-1444
Type of Manuscript:  PAPER
Category: Network
Keyword: 
grouped routing optical networks, coarse granular routing, resiliency, dedicated path protection, impairment-aware, 
 Summary | Full Text:PDF
Differential Reliability Path Accommodation Design and Reconfiguration in Virtualized Multi-Layer Transport Network
Akihiro KADOHATA Takafumi TANAKA Atsushi WATANABE Akira HIRANO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/11/01
Vol. E98-B  No. 11  pp. 2151-2159
Type of Manuscript:  Special Section PAPER (Special Section on Network Systems for Virtualized Environment)
Category: 
Keyword: 
multi-layer transport network, network virtualization, robustness and reconfiguration, 
 Summary | Full Text:PDF
Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks
Akihiro KADOHATA Atsushi WATANABE Akira HIRANO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/10/01
Vol. E98-B  No. 10  pp. 2014-2021
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical transparent wdm networks, reconfiguration, defragmentation, 
 Summary | Full Text:PDF
Efficient Shared Protection Network Design Algorithm that Iterates Path Relocation with New Resource Utilization Metrics
Masakazu SATO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/04/01
Vol. E96-B  No. 4  pp. 956-966
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical path network, routing and wavelength assignment, shared protection, iterative re-optimization, 
 Summary | Full Text:PDF
Impact of Elastic Optical Paths That Adopt Distance Adaptive Modulation to Create Efficient Networks
Tatsumi TAKAGI Hiroshi HASEGAWA Ken-ichi SATO Yoshiaki SONE Akira HIRANO Masahiko JINNO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3793-3801
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
elastic optical path network, distance adaptive modulation, routing and spectrum assignment, network design, 
 Summary | Full Text:PDF
Optical Fast Circuit Switching Networks Employing Dynamic Waveband Tunnel
Takahiro OGAWA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3139-3148
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
hierarchical optical path network, optical circuit switching, routing and wavelength assignment, waveband, dynamic control, 
 Summary | Full Text:PDF
Router Power Reduction through Dynamic Performance Control Based on Traffic Predictions
Hiroyuki ITO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3130-3138
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
router, performance control, energy efficiency, 
 Summary | Full Text:PDF
Effects of Optical Layer Protection Granularity in Survivable Hierarchical Optical Path Network
Yoshiyuki YAMADA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2959-2963
Type of Manuscript:  LETTER
Category: Network
Keyword: 
hierarchical optical path network, waveband, survivability, protection, 
 Summary | Full Text:PDF
Optical Node Architectures That Utilize Dedicated Add/Drop Switches to Realize Colorless, Directionless and Contentionless Capability
Yoshiyuki YAMADA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/04/01
Vol. E95-B  No. 4  pp. 1307-1316
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical cross-connect, colorless/directionless/contentionless, waveband, multi-layer optical paths, 
 Summary | Full Text:PDF
Virtual Fiber Networking and Impact of Optical Path Grooming on Creating Efficient Layer One Services
Fumisato NARUSE Yoshiyuki YAMADA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Vol. E95-B  No. 3  pp. 723-729
Type of Manuscript:  Special Section PAPER (Special Section on New/Next Generation Photonic Networking and Future Networks)
Category: 
Keyword: 
waveband, optical path grooming, virtual fiber networking, virtual private network, layer one service, 
 Summary | Full Text:PDF
Compact Matrix-Switch-Based Hierarchical Optical Path Cross-Connect with Colorless Waveband Add/Drop Ratio Restriction
Ryosuke HIRAKO Kiyo ISHII Hiroshi HASEGAWA Ken-ichi SATO Osamu MORIWAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/04/01
Vol. E94-B  No. 4  pp. 918-927
Type of Manuscript:  Special Section PAPER (Special Section on Photonic Network Technologies in Terabit Network Era)
Category: 
Keyword: 
hierarchical optical cross-connect, waveband, add/drop ratio, MUX/DMUX, AWG, 
 Summary | Full Text:PDF
Optical Cross-Connect Switch Architectures for Hierarchical Optical Path Networks
Shoji KAKEHASHI Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/10/01
Vol. E91-B  No. 10  pp. 3174-3184
Type of Manuscript:  PAPER
Category: Switching for Communications
Keyword: 
waveband, waveband cross-connect, optical cross-connect, 
 Summary | Full Text:PDF
An Edge-Preserving Super-Precision for Simultaneous Enhancement of Spacial and Grayscale Resolutions
Hiroshi HASEGAWA Toshinori OHTSUKA Isao YAMADA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/02/01
Vol. E91-A  No. 2  pp. 673-681
Type of Manuscript:  PAPER
Category: Image
Keyword: 
super-resolution, Huber function, total variation, set-theoretic approach, outer approximation, hybrid steepest descent method, 
 Summary | Full Text:PDF
Formulation of Waveguide Connection for Waveband MUX/DEMUX Using Concatenated Arrayed-Waveguide Gratings
Shoji KAKEHASHI Hiroshi HASEGAWA Ken-ichi SATO Osamu MORIWAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/10/01
Vol. E90-B  No. 10  pp. 2950-2952
Type of Manuscript:  LETTER
Category: Fiber-Optic Transmission for Communications
Keyword: 
waveband, waveband filter, AWG, MUX/DEMUX, 
 Summary | Full Text:PDF
Prospects and Challenges of Multi-Layer Optical Networks
Ken-ichi SATO Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/08/01
Vol. E90-B  No. 8  pp. 1890-1902
Type of Manuscript:  SURVEY PAPER
Category: Traffic Engineering and Multi-Layer Networking
Keyword: 
optical path, waveband, photonic network, multi-layer optical paths, optical cross-connect, 
 Summary | Full Text:PDF
An Iterative MPEG Super-Resolution with an Outer Approximation of Framewise Quantization Constraint
Hiroshi HASEGAWA Toshiyuki ONO Isao YAMADA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/09/01
Vol. E88-A  No. 9  pp. 2427-2435
Type of Manuscript:  PAPER
Category: Image
Keyword: 
super-resolution, MPEG video, set-theoretic approach, outer approximation, adaptive projected subgradient method, 
 Summary | Full Text:PDF
Evaluation of the Corresponding Degree between a Visual Image and Its Associated Sound under Dynamic Conditions on a Wide Screen
Hiroshi HASEGAWA Miyoshi AYAMA Shuichi MATSUMOTO Atsushi KOIKE Koichi TAKAGI Masao KASUGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/06/01
Vol. E87-A  No. 6  pp. 1409-1416
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003))
Category: 
Keyword: 
auditory-visual interaction, ventriloquist effect, wide screen, peripheral visual field, 
 Summary | Full Text:PDF
Discrete Time-Frequency Projection Filtering Based on an Alias-Free Discrete Time-Frequency Analysis
Hiroshi HASEGAWA Isao YAMADA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/06/01
Vol. E87-A  No. 6  pp. 1537-1545
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
time-frequency analysis, Cohen's class, discrete time and frequency, linear time-varying filtering, 
 Summary | Full Text:PDF
A Truncated Polynomial Interpolation and Its Application to Polynomially WLS Design of IIR Filters
Hiroshi HASEGAWA Masashi NAKAGAWA Isao YAMADA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1742-1748
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
Walsh's theorem, weighted least-squares approximation, rational approximation, design of IIR filters, 
 Summary | Full Text:PDF
A Higher Order Generalization of an Alias-Free Discrete Time-Frequency Analysis
Hiroshi HASEGAWA Yasuhiro MIKI Isao YAMADA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/08/01
Vol. E85-A  No. 8  pp. 1774-1780
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Theory of Signals
Keyword: 
time-frequency analysis, higher order moment spectra, discrete-time & frequency, kernel design, hybrid steepest descent method, 
 Summary | Full Text:PDF
A Design of Near Perfect Reconstruction Linear-Phase QMF Banks Based on Hybrid Steepest Descent Method
Hiroshi HASEGAWA Isao YAMADA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/25
Vol. E83-A  No. 8  pp. 1523-1530
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Filter Banks
Keyword: 
two-channel linear phase FIR QMF bank, near perfect reconstruction, convex projection technique, hybrid steepest descent method, magnitude product space, 
 Summary | Full Text:PDF
Simply Realization of Sound Localization Using HRTF Approximated by IIR Filter
Hiroshi HASEGAWA Masao KASUGA Shuichi MATSUMOTO Atsushi KOIKE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/06/25
Vol. E83-A  No. 6  pp. 973-978
Type of Manuscript:  Special Section PAPER (Special Section of Papers Selected from 1999 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC'99))
Category: 
Keyword: 
IIR filter, HRTF (head-related transfer function), dummy-head, sound localization, binaural reproduction, 
 Summary | Full Text:PDF
A 1.5 V, 8 mW, 8 b, 15 Msps BiCMOS A/D Converter
Michio YOTSUYANAGI Hiroshi HASEGAWA Masaharu SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/02/25
Vol. E82-A  No. 2  pp. 286-292
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
A/D converter, comparator, BiCMOS, low voltage, 
 Summary | Full Text:PDF
A Note on Constrained Least Squares Design of M-D FIR Filter Based on Convex Projection Techniques
Isao YAMADA Hiroshi HASEGAWA Kohichi SAKANIWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/08/25
Vol. E81-A  No. 8  pp. 1586-1591
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
multidimensional FIR filter,  constrained least squares design, convex projection,  Dykstra's algorithm, 
 Summary | Full Text:PDF
Communication System for People with Physical Disability Using Voice Recognizer
Seigou YASUDA Akira OKAMOTO Hiroshi HASEGAWA Yoshito MEKADA Masao KASUGA Kazuo KAMATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/06/25
Vol. E81-A  No. 6  pp. 1097-1104
Type of Manuscript:  Special Section PAPER (Special Section of Papers Selected from ITC-CSCC'97)
Category: Human Communications and Ergonomics
Keyword: 
disabled people, multi-modal interface, voice recognition, electronic mail, 
 Summary | Full Text:PDF