Hiroyuki ISHII


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)

Investigation on Transmission Power Control Suitable for Heterogeneous Network Employing Cell Range Expansion in LTE-Advanced Uplink
Akihito MORIMOTO Nobuhiko MIKI Hiroyuki ISHII Daisuke NISHIKAWA Yukihiko OKUMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/04/01
Vol. E96-B  No. 4  pp. 1051-1060
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
LTE-advancedheterogeneous networktransmission power controlcell range expansion
 Summary | Full Text:PDF(3.2MB)

Investigation on Signaling Overhead for Mobility Management with Carrier Aggregation in LTE-Advanced
Kengo YAGYU Takeshi NAKAMORI Hiroyuki ISHII Mikio IWAMURA Nobuhiko MIKI Takahiro ASAI Junichiro HAGIWARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3335-3345
Type of Manuscript:  Special Section PAPER (Special Section on Cooperative Communications for Cellular Networks)
Category: 
Keyword: 
LTE-Advancedcarrier aggregationcomponent carrier managementcontrol overhead
 Summary | Full Text:PDF(2MB)

Experiments on HSDPA Throughput Performance in W-CDMA Systems
Hiroyuki ISHII Tomoki SAO Shinya TANAKA Shinsuke OGAWA Yousuke IIZUKA Takeshi NAKAMORI Takehiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/07/01
Vol. E89-A  No. 7  pp. 1903-1912
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
HSDPAadvanced receiverBS schedulingTCP throughput
 Summary | Full Text:PDF(2.8MB)

Thermal Response Analysis of a Tunable Laser Diode Using a Mode Density Method
Mitsuteru ISHIKAWA Hiroyuki ISHII Yuzo YOSHIKUNI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/01/01
Vol. E85-C  No. 1  pp. 85-92
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Progress in Semiconductor Lasers and Light-Emitting Devices)
Category: 
Keyword: 
tunable laser diodesthermal responsemode densitynumerical calculationFourier analysis
 Summary | Full Text:PDF(452.9KB)

Wavelength-Tunable Semiconductor Light Sources for WDM Applications
Yuichi TOHMORI Hiroyuki ISHII Hiromi OOHASHI Yuzo YOSHIKUNI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/01/01
Vol. E85-C  No. 1  pp. 21-26
Type of Manuscript:  INVITED PAPER (Special Issue on Recent Progress in Semiconductor Lasers and Light-Emitting Devices)
Category: 
Keyword: 
wavelength-selectable lasersdistributed-feed-back (DFB) lasersdistributed-Bragg-reflector (DBR) laserssuper-structure-grating (SSG)semiconductor optical amplifier (SOA)
 Summary | Full Text:PDF(766.5KB)

InP-Based Monolithic Optical Frequency Discriminator Module for WDM Systems
Ken TSUZUKI Hiroaki TAKEUCHI Satoshi OKU Masahiro TANOBE Yoshiaki KADOTA Fumiyoshi KANO Hiroyuki ISHII Mitsuo YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/08/25
Vol. E82-C  No. 8  pp. 1454-1459
Type of Manuscript:  INVITED PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
temperature insensitive filterMach-Zehnder filterfeedbackfrequency trimming
 Summary | Full Text:PDF(1.6MB)

InP-Based Monolithic Optical Frequency Discriminator Module for WDM Systems
Ken TSUZUKI Hiroaki TAKEUCHI Satoshi OKU Masahiro TANOBE Yoshiaki KADOTA Fumiyoshi KANO Hiroyuki ISHII Mitsuo YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/08/25
Vol. E82-B  No. 8  pp. 1188-1193
Type of Manuscript:  INVITED PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
temperature insensitive filterMach-Zehnder filterfeedbackfrequency trimming
 Summary | Full Text:PDF(1.6MB)

Wavelength Insensitive Tunable Wavelength Conversion Using Cascaded Semiconductor Lasers
Hiroaki SANJOH Hiroyuki ISHII Hiroshi YASAKA Kunishige OE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/08/25
Vol. E81-C  No. 8  pp. 1258-1263
Type of Manuscript:  Special Section PAPER (Special Issue on High-Capacity WDM/TDM Networks)
Category: 
Keyword: 
wavelength conversiontunable semiconductor laserwavelength division multiplexing
 Summary | Full Text:PDF(551.3KB)

Multiple-Phase-Shift Super Structure Grating DBR Lasers
Hiroyuki ISHII Yuichi TOHMORI Fumiyoshi KANO Yuzo YOSHIKUNI Yasuhiro KONDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1993/11/25
Vol. E76-C  No. 11  pp. 1683-1690
Type of Manuscript:  PAPER
Category: Opto-Electronics
Keyword: 
semiconductorlaser diodedistributed Bragg reflectorwavelength tuning
 Summary | Full Text:PDF(786.5KB)