Kiyoshi NAKAGAWA


A Speech Packet Loss Concealment Method Using Linear Prediction
Kazuhiro KONDO Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/02/01
Vol. E89-D  No. 2  pp. 806-813
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech packetspacket loss concealmentlinear predictionsegment smoothingsubjective speech quality evaluations
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Performance Analysis of Optical Single Sideband Modulation Based on Mach-Zehnder Interferometers and Its Dispersive Fiber Transmission
Katsumi TAKANO Yuuki NAGANUMA Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/05/01
Vol. E88-B  No. 5  pp. 1994-2003
Type of Manuscript:  Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications)
Category: Transmission Systems and Technologies
Keyword: 
SSBmodulation formatmodulatorHilbert transformfiber communications
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Frequency Analysis of Wavelength Demultiplexers and Optical Filters with Finite 2-D Photonic Crystals
Katsumi TAKANO Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/05/01
Vol. E84-C  No. 5  pp. 669-677
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Passive Devices and Modules
Keyword: 
photonic crystaloptical filterdemultiplexerWDMoptical integrated circuit
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Frequency Analysis of Wavelength Demultiplexers and Optical Filters with Finite 2-D Photonic Crystals
Katsumi TAKANO Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/05/01
Vol. E84-B  No. 5  pp. 1295-1303
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Passive Devices and Modules
Keyword: 
photonic crystaloptical filterdemultiplexerWDMoptical integrated circuit
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A Coordination Based Restoring Algorithm for High Speed Broadband Networks
Ardian GRECA Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/07/25
Vol. E83-B  No. 7  pp. 1517-1526
Type of Manuscript:  PAPER
Category: Network
Keyword: 
VP conceptreliable and available networkfailure restorationself-healing algorithm
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Pulsed Lightwave Frequency Synthesizer System Using an EDFA and AOD in a Fiber Loop
Kazuo AIDA Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/05/25
Vol. E78-B  No. 5  pp. 664-673
Type of Manuscript:  Special Section PAPER (Special Issue on Optical Signal Processing and Its Applications to Telecommunications)
Category: 
Keyword: 
lightwave frequency synthesizerEDFAAODfiber loop
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Integrated Circuits for Ultra-High-Speed Optical Fiber Transmission Systems
Kohji HOHKAWA Shinji MATSUOKA Kazuo HAGIMOTO Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1993/01/25
Vol. E76-C  No. 1  pp. 68-77
Type of Manuscript:  INVITED PAPER (Special Issue on Opto-Electronics and LSI)
Category: LSI Technology for Opto-Electronics
Keyword: 
optical fibertransmission systemLSIGaAsSi
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A 10 Gbit/s Long-Span Fiber Transmission Experiment Employing Optical Amplification Technique and Monolithic IC Technology
Kazuo HAGIMOTO Yuuzou MIYAGAWA Yutaka MIYAMOTO Masaharu OHASHI Masanobu OHHATA Kazuo AIDA Kiyoshi NAKAGAWA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/01/25
Vol. E73-E  No. 1  pp. 27-30
Type of Manuscript:  Special Section PAPER (Special Issue on International Conference on Integrated Optics and Optical Fiber Communication)
Category: Optical Communication Systems and Applications
Keyword: 
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1.8 Gbit/s Transmission over 210 km Using an Erbium-Doped Fiber Laser Amplifier with 20 dB Repeater Gain in a Direct Detection System
Atsushi TAKADA Kazuo HAGIMOTO Katsumi IWATSUKI Kazuo AIDA Kiyoshi NAKAGAWA Makoto SHIMIZU 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/01/25
Vol. E73-E  No. 1  pp. 21-26
Type of Manuscript:  Special Section PAPER (Special Issue on International Conference on Integrated Optics and Optical Fiber Communication)
Category: Optical Communication Systems and Applications
Keyword: 
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400 Mb/s Optical Repeater Design and Performance
Kiyoshi NAKAGAWA Yoshiro HAKAMADA Koh-ichi SUTO Takeshi ITO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1982/11/25
Vol. E65-E  No. 11  pp. 657-664
Type of Manuscript:  PAPER
Category: Transmission Systems
Keyword: 
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Experimental Optical Fiber Digital Transmission Systems
Tetsuya MIKI Kiyoshi NAKAGAWA Masaki KOYAMA Hideki ISHIO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1978/03/25
Vol. E61-E  No. 3  pp. 229-234
Type of Manuscript:  Special Section PAPER (Special Issue on Integrated Optics and Optical Fiber Communications)
Category: 
Keyword: 
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