Takayuki KOBAYASHI


Nonlinearity Mitigation of PDM-16QAM Signals Using Multiple CSI-OPCs in Ultra-Long-Haul Transmission without Excess Penalty
Takeshi UMEKI Takayuki KOBAYASHI Akihide SANO Takuya IKUTA Masashi ABE Takushi KAZAMA Koji ENBUTSU Ryoichi KASAHARA Yutaka MIYAMOTO 
Publication:   
Publication Date: 2020/11/01
Vol. E103-B  No. 11  pp. 1226-1232
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
optical signal processing techniques for optical communicationsoptical phase conjugationnonlinear opticsperiodically poled LiNbO3 waveguide
 Summary | Full Text:PDF(3.1MB)

Dual-Carrier 1-Tb/s Transmission Over Field-Deployed G.654.E Fiber Link Using Real-Time Transponder
Fukutaro HAMAOKA Takeo SASAI Kohei SAITO Takayuki KOBAYASHI Asuka MATSUSHITA Masanori NAKAMURA Hiroki TANIGUCHI Shoichiro KUWAHARA Hiroki KAWAHARA Takeshi SEKI Josuke OZAKI Yoshihiro OGISO Hideki MAEDA Yoshiaki KISAKA Masahito TOMIZAWA 
Publication:   
Publication Date: 2020/11/01
Vol. E103-B  No. 11  pp. 1183-1189
Type of Manuscript:  INVITED PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
optical fiber communicationdigital coherent transmissionreal-time transmissionfield transmission
 Summary | Full Text:PDF(5.5MB)

Nonlinear Phase-Shift Cancellation by Taking the Geometric Mean of WDM-Signal Phase-Conjugate Pair
Takahisa KODAMA Akira MIZUTORI Takayuki KOBAYASHI Takayuki MIZUNO Masafumi KOGA 
Publication:   
Publication Date: 2018/08/01
Vol. E101-B  No. 8  pp. 1845-1852
Type of Manuscript:  PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
fiber nonlinearitynonlinearity mitigationoptical fiber communicationoptical phase-conjugationwavelength division multiplexing
 Summary | Full Text:PDF(2.3MB)

Optical DP-High Order-QAM Transmission System for High-Speed Short Links Utilizing Copropagating Twin Local Lights
Hiroto KAWAKAMI Takayuki KOBAYASHI Yutaka MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/08/01
Vol. E99-B  No. 8  pp. 1799-1804
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Information and Communication Technologies and Services in Conjunction with Main Topics of APCC2015)
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
QAMdigital coherent detectionphase noiselinewidth
 Summary | Full Text:PDF(1.3MB)

Wide-Range and Fast-Tracking Non-Data-Aided Frequency Offset Estimator for QAM Optical Coherent Receivers
Tadao NAKAGAWA Takayuki KOBAYASHI Koichi ISHIHARA Yutaka MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/07/01
Vol. E99-B  No. 7  pp. 1416-1425
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical fiber communicationoptical receiversquadrature amplitude modulationdigital signal processingfrequency offset estimation
 Summary | Full Text:PDF(2MB)

A Band-Divided Receiver Prototype for Wideband Optical Signals
Munehiro MATSUI Riichi KUDO Yasushi TAKATORI Tadao NAKAGAWA Koichi ISHIHARA Masato MIZOGUCHI Takayuki KOBAYASHI Yutaka MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/07/01
Vol. E94-B  No. 7  pp. 1801-1808
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
coherent receiveranalog to digital converterOFDMreal-timeheterodyne receiver
 Summary | Full Text:PDF(1.4MB)

Ultra-High Capacity Optical Transmission Technologies for 100 Tbit/s Optical Transport Networks
Akihide SANO Takayuki KOBAYASHI Eiji YOSHIDA Yutaka MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/02/01
Vol. E94-B  No. 2  pp. 400-408
Type of Manuscript:  INVITED PAPER (Special Section on Extremely Advanced Optical Transmission Technologies and Transmission Optical Fiber Technologies towards Exabit Era)
Category: 
Keyword: 
coherent optical communicationmulti-level modulationQAMRaman amplification
 Summary | Full Text:PDF(1.5MB)

Frequency-Domain Equalization for Coherent Optical Single-Carrier Transmission Systems
Koichi ISHIHARA Takayuki KOBAYASHI Riichi KUDO Yasushi TAKATORI Akihide SANO Yutaka MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12  pp. 3736-3743
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
frequency-domain equalization (FDE)coherent optical transmissionchromatic dispersion (CD)polarization mode dispersion (PMD)digital signal processing (DSP)
 Summary | Full Text:PDF(2.6MB)

Fabrication and Properties of Planar Intrinsic Josephson Junctions with In-Plane Aligned YBCO Films
Lan ZHANG Masataka MORIYA Takayuki KOBAYASHI Masashi MUKAIDA Toshinari GOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 764-768
Type of Manuscript:  Special Section PAPER (Special Issue on Superconductive Electronics)
Category: Junctions and Processing
Keyword: 
YBCO filmsLSGO substratesin-plane alignmentintrinsic Josephson effects
 Summary | Full Text:PDF(795KB)

Improvement of Vcc Margin in a Reference Voltage Generator for Megabit DRAMs
Takayuki KOBAYASHI Koji SAKUI Masaki MOMODOMI Sadayuki YOKOYAMA Yasuo ITOH Mitsugi OGURA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/04/25
Vol. E69-E  No. 4  pp. 270-271
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1986 National Convention IECE Japan)
Category: Silicon Devices and Integrated Circuits
Keyword: 
 Summary | Full Text:PDF(130.4KB)