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Hiroyasu ISHIKAWA

Multiple Symbol Differential Detection with Majority Decision Method for DQPSK in LOS Channel Hiroyasu ISHIKAWA Hideyuki SHINONAGA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/01/01 Vol. E96-B No. 1 pp. 384-388 Type of Manuscript: LETTER Category: Satellite Communications Keyword: multiple symbol differential detection, majority decision method, frequency offset compensation technique,
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A Delta-Sigma Modulator Using a Non-uniform Quantizer Adjusted for the Probability Density of Input Signals Toru KITAYABU Mao HAGIWARA Hiroyasu ISHIKAWA Hiroshi SHIRAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/07/01 Vol. E95-B No. 7 pp. 2257-2265 Type of Manuscript: PAPER Category: Fundamental Theories for Communications Keyword: delta-sigma modulator, non-uniform quantizer, quantization noise,
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Small-Sized Shaped Beam Base Station Antenna with Superior Intersector Interference Reduction in High Speed Cellular Systems Masayuki NAKANO Hiroyasu ISHIKAWA Shinichi NOMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/10/01 Vol. E93-B No. 10 pp. 2586-2594 Type of Manuscript: Special Section PAPER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009) Category: Antennas Keyword: shaped beam, base station antenna, inter-sector interference, CINR, high-speed cellular systems,
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Evaluation of MC-CDMA with Frequency Interleaving Technique in Frequency Selective Fading Channel Masato FURUDATE Hiroyasu ISHIKAWA Toshinori SUZUKI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/02/01 Vol. E88-B No. 2 pp. 443-451 Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2) Category: Keyword: MC-CDMA, frequency-interleaver, frequency-domain equalization, frequency selective fading channel,
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Experimental Results of Future Road-to-Vehicle Communications System with Handover Function Tadayuki FUKUHARA Kenya YONEZAWA Hiroyasu ISHIKAWA Keizo SUGIYAMA Hideyuki SHINONAGA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/10/01 Vol. E87-A No. 10 pp. 2649-2656 Type of Manuscript: Special Section PAPER (Special Section on Wide Band Systems) Category: Keyword: DSRC, handover, ITS, handover processing delay,
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Low Noise and Low Distortion Performances of an AlGaN/GaN HFET Yutaka HIROSE Yoshito IKEDA Motonori ISHII Tomohiro MURATA Kaoru INOUE Tsuyoshi TANAKA Hiroyasu ISHIKAWA Takashi EGAWA Takashi JIMBO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/10/01 Vol. E86-C No. 10 pp. 2058-2064 Type of Manuscript: Special Section PAPER (Special Issue on Heterostructure Microelectronics with TWHM2003) Category: Keyword: AlGaN/GaN HFET, low noise amplifier, noise figure (NF), intermodulation distortion,
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High-Quality AlGaN/GaN HEMTs on Epitaxial AlN/Sapphire Templates Masahiro SAKAI Kenta ASANO Subramaniam ARULKUMARAN Hiroyasu ISHIKAWA Takashi EGAWA Takashi JIMBO Tomohiko SHIBATA Mitsuhiro TANAKA Osamu ODA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/10/01 Vol. E86-C No. 10 pp. 2071-2076 Type of Manuscript: Special Section PAPER (Special Issue on Heterostructure Microelectronics with TWHM2003) Category: Keyword: AlGaN/GaN, HEMT, AlN, template,
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Growth of 100-mm-Diameter AlGaN/GaN Heterostructures on Sapphire Substrates by MOVPE Makoto MIYOSHI Masahiro SAKAI Hiroyasu ISHIKAWA Takashi EGAWA Takashi JIMBO Mitsuhiro TANAKA Osamu ODA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/10/01 Vol. E86-C No. 10 pp. 2077-2081 Type of Manuscript: Special Section PAPER (Special Issue on Heterostructure Microelectronics with TWHM2003) Category: Keyword: AlGaN/GaN, heterostructure, MOVPE, uniformity, bowing,
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18 Mbit/s Carrier Frequency Offset-Spread Spectrum (CFO-SS) System Using 2.4 GHz ISM Band Hiroyasu ISHIKAWA Naoki FUKE Keizo SUGIYAMA Hideyuki SHINONAGA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/12/01 Vol. E85-A No. 12 pp. 2839-2846 Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications) Category: Keyword: CFO-SS, wireless access, high speed, 2.4 GHz ISM band, dual-polarization technique,
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Investigations on Strained AlGaN/GaN/Sapphire and GaInN Multi-Quantum-Well Surface LEDs Using AlGaN/GaN Bragg Reflectors Hiroyasu ISHIKAWA Naoyuki NAKADA Masaharu NAKAJI Guang-Yuan ZHAO Takashi EGAWA Takashi JIMBO Masayoshi UMENO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2000/04/20 Vol. E83-C No. 4 pp. 591-597 Type of Manuscript: Special Section PAPER (Special Issue on Blue Laser Diodes and Related Devices/Technologies) Category: Keyword: light emitting diode (LED), distributed Bragg reflector (DBR), GaN, AlGaN, GaInN,
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Design of Carrier Frequency Offset-Spread Spectrum (CFO-SS) System Using 2.4 GHz ISM Band Hiroyasu ISHIKAWA Hideyuki SHINONAGA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1999/12/20 Vol. E82-A No. 12 pp. 2669-2676 Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications) Category: Keyword: wireless LAN, CFO-SS, 2.4 GHz ISM band,
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Carrier Frequency Offset-Spread Spectrum (CFO-SS) Method for Wireless LAN System Using 2.4 GHz ISM Band Hiroyasu ISHIKAWA Hideyuki SHINONAGA Hideo KOBAYASHI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1997/12/20 Vol. E80-A No. 12 pp. 2366-2371 Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications) Category: Keyword: wireless LAN systems, spread spectrum, 2.4 GHz ISM band, carrier frequency offset, SAW matched filter,
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A Novel Selection Diversity Method with Decision Feedback Equalizer Hiroyasu ISHIKAWA Hideo KOBAYASHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1994/05/20 Vol. E77-B No. 5 pp. 566-572 Type of Manuscript: Special Section PAPER (Special Issue on Adaptive Signal Processing in Mobile Radio Communications) Category: Keyword: decision feedback equalizer, multipath fading, selection diversity, digital land mobile communications system,
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