Wataru KOBAYASHI


Advantages of SOA Assisted Extended Reach EADFB Laser (AXEL) for Operation at Low Power and with Extended Transmission Reach
Wataru KOBAYASHI Naoki FUJIWARA Takahiko SHINDO Yoshitaka OHISO Shigeru KANAZAWA Hiroyuki ISHII Koichi HASEBE Hideaki MATSUZAKI Mikitaka ITOH 
Publication:   
Publication Date: 2017/10/01
Vol. E100-C  No. 10  pp. 759-766
Type of Manuscript:  INVITED PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
electro-absorption modulatorsemiconductor optical amplifierDFB laser
 Summary | Full Text:PDF(1.8MB)

Wavelength-Routed Switching for 25-Gbit/s Optical Packets Using a Compact Transmitter Integrating a Parallel-Ring-Resonator Tunable Laser and an InGaAlAs EAM
Toru SEGAWA Wataru KOBAYASHI Tatsushi NAKAHARA Ryo TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/07/01
Vol. E97-C  No. 7  pp. 719-724
Type of Manuscript:  INVITED PAPER (Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
tunable laserelectro-absorption modulatoroptical packet switchingphotonic integrated circuits
 Summary | Full Text:PDF(3.3MB)

Bandwidth Enhanced Operation of Single Mode Semiconductor Laser by Intensity Modulated Signal Light Injection
Hiroki ISHIHARA Yosuke SAITO Wataru KOBAYASHI Hiroshi YASAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1549-1551
Type of Manuscript:  BRIEF PAPER
Category: Lasers, Quantum Electronics
Keyword: 
semiconductor lasersintensity modulationmodulation bandwidthgain saturationnon-linear gainoptical injection
 Summary | Full Text:PDF(480KB)

Long-Reach 100 Gbit Ethernet Light Source Based on 425-Gbit/s 1.3-µm InGaAlAs EADFB Lasers
Takeshi FUJISAWA Kiyoto TAKAHATA Takashi TADOKORO Wataru KOBAYASHI Akira OHKI Naoki FUJIWARA Shigeru KANAZAWA Takayuki YAMANAKA Fumiyoshi KANO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/07/01
Vol. E94-C  No. 7  pp. 1167-1172
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
100 Gbit Ethernetelectroabsorption modulatortransmitter optical subassemblycan-type package
 Summary | Full Text:PDF(1.6MB)

3D Sound Rendering for Multiple Sound Sources Based on Fuzzy Clustering
Masashi OKADA Nobuyuki IWANAGA Tomoya MATSUMURA Takao ONOYE Wataru KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2163-2172
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: 
Keyword: 
head-related transfer function (HRTF)sound localizationmultiple sound sourcesfuzzy clustering
 Summary | Full Text:PDF(1.5MB)

Embedded System Implementation of Sound Localization in Proximal Region
Nobuyuki IWANAGA Tomoya MATSUMURA Akihiro YOSHIDA Wataru KOBAYASHI Takao ONOYE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/03/01
Vol. E91-A  No. 3  pp. 763-771
Type of Manuscript:  Special Section PAPER (Special Section on Signal Processing for Audio and Visual Systems and Its Implementations)
Category: Engineering Acoustics
Keyword: 
sound localizationproximal regionhead-related transfer functionauditory parallax modelrigid-sphere model
 Summary | Full Text:PDF(654.4KB)

Efficient 3-D Sound Movement with Time-Varying IIR Filters
Kosuke TSUJINO Wataru KOBAYASHI Takao ONOYE Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/03/01
Vol. E90-A  No. 3  pp. 618-625
Type of Manuscript:  Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing)
Category: Speech/Audio Processing
Keyword: 
head-related transfer functionbinaural synthesispole-zero modeling,time-varying filter
 Summary | Full Text:PDF(483.3KB)

Design of Realtime 3-D Sound Processing System
Kosuke TSUJINO Kazuhiko FURUYA Wataru KOBAYASHI Tomonori IZUMI Takao ONOYE Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/05/01
Vol. E88-D  No. 5  pp. 954-962
Type of Manuscript:  Special Section PAPER (Special Section on Cyberworlds)
Category: 
Keyword: 
3-D soundvirtual realitysystem implementation
 Summary | Full Text:PDF(555.8KB)

3D Acoustic Image Localization Algorithm by Embedded DSP
Wataru KOBAYASHI Noriaki SAKAMOTO Takao ONOYE Isao SHIRAKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/06/01
Vol. E84-A  No. 6  pp. 1423-1430
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from 2000 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2000))
Category: 
Keyword: 
3D sound localizationHRTFfrequency divisionDSP implementationlow computational costs
 Summary | Full Text:PDF(511.9KB)