IEICE SEARCH SYSTEM

Hiroyuki ARAI

MIMO Phase Control Relaying System Atsuki MIZUNO Daisuke UCHIDA Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/01/01 Vol. E96-B No. 1 pp. 340-343 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: MIMO, relay, E-SDM, AF, CSI, BER, channel capacity,
	Summary \| Full Text:PDF (268.7KB)

Improving Elevation Estimation Accuracy in DOA Estimation: How Planar Arrays Can Be Modified into 3-D Configuration Hiroki MORIYA Koichi ICHIGE Hiroyuki ARAI Takahiro HAYASHI Hiromi MATSUNO Masayuki NAKANO
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2012/10/01 Vol. E95-A No. 10 pp. 1667-1675 Type of Manuscript: Special Section PAPER (Special Section on Advances in Adaptive Signal Processing and Applications) Category: DOA Keyword: direction of arrival estimation, array signal processing, sensor arrays, antenna arrays,
	Summary \| Full Text:PDF (1.5MB)

Design of MIMO Antennas for Indoor Base Station and Mobile Terminal Hiroyuki ARAI Daisuke UCHIDA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/01/01 Vol. E95-B No. 1 pp. 10-17 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010) Category: INVITED Keyword: MIMO, channel capacity, SNR, correlation, antenna,
	Summary \| Full Text:PDF (1.3MB)

A Low-Profile Dual-Polarized Directional Antenna for Enhancing Channel Capacity in Indoor MIMO Systems Daisuke UCHIDA Hiroyuki ARAI Yuki INOUE Keizo CHO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/10/01 Vol. E93-B No. 10 pp. 2570-2577 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: MIMO, radiation pattern, polarization, channel capacity, low-profile antenna,
	Summary \| Full Text:PDF (1.6MB)

Estimating Number of People Using Calibrated Monocular Camera Based on Geometrical Analysis of Surface Area Hiroyuki ARAI Isao MIYAGAWA Hideki KOIKE Miki HASEYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/08/01 Vol. E92-A No. 8 pp. 1932-1938 Type of Manuscript: Special Section PAPER (Special Section on Signal Processing) Category: Image Keyword: people number counting, crowd level estimation, image processing, camera calibration,
	Summary \| Full Text:PDF (1.1MB)

Efficient Heterodyne Digital Receiver with Direct RF-to-Digital Conversion for Software Defined Radio Minseok KIM Takayuki MOTEKI Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/04/01 Vol. E92-A No. 4 pp. 1056-1062 Type of Manuscript: Special Section PAPER (Special Section on Advanced Technologies Emerging Mainly from the 21st Workshop on Circuits and Systems in Karuizawa) Category: Keyword: multimode, RF to digital conversion, sampling, software defined radio, cognitive radio,
	Summary \| Full Text:PDF (866.7KB)

A Transmitting and Receiving System Using a Basic One-Chip Microcomputer for Extremely Low Power Radio Communication Shuhei SONODA Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/09/01 Vol. E91-B No. 9 pp. 2883-2888 Type of Manuscript: PAPER Category: Devices/Circuits for Communications Keyword: extremely low power radio, one-chip microcomputer, short range wireless system,
	Summary \| Full Text:PDF (334.1KB)

High Resolution DOA Estimation Using Unwrapped Phase Information of MUSIC-Based Noise Subspace Koichi ICHIGE Kazuhiko SAITO Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2008/08/01 Vol. E91-A No. 8 pp. 1990-1999 Type of Manuscript: Special Section PAPER (Special Section on Signal Processing) Category: Keyword: direction of arrival estimation, array antenna, MUSIC method, phase characteristics,
	Summary \| Full Text:PDF (579KB)

Adaptive Impedance Matching System Using FPGA Processor for Efficient Control Algorithm Hirokazu OBA Minseok KIM Ryotaro TAMAKI Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2008/08/01 Vol. E91-C No. 8 pp. 1348-1355 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: antenna input impedance, automatic matching system, FPGA,
	Summary \| Full Text:PDF (1.8MB)

Evaluation of Digital-to-RF Upconversion Transmitter Using Harmonic Images of DAC Output Minseok KIM Tatsuo FUJI Takafumi NAKABAYASHI Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/04/01 Vol. E91-B No. 4 pp. 1215-1218 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: DAC, harmonic, SDR, sinc distortion, up-conversion, EVM,
	Summary \| Full Text:PDF (220.1KB)

Resource and Performance Evaluations of Fixed Point QRD-RLS Systolic Array through FPGA Implementation Yoshiaki YOKOYAMA Minseok KIM Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/04/01 Vol. E91-B No. 4 pp. 1068-1075 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: systolic array, QR decomposition, RLS, CORDIC, FPGA,
	Summary \| Full Text:PDF (729KB)

A Free Access Mat by Tightly Coupled Patch Array for Short Range Wireless Access Kunsun EOM Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/12/01 Vol. E90-C No. 12 pp. 2254-2260 Type of Manuscript: Special Section PAPER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices) Category: Keyword: free access mat, open waveguide, body area network, personal area network, proximate coupling, ribbon-wire interconnect,
	Summary \| Full Text:PDF (660.8KB)

IEICE Transactions on Communications, Status Report Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/03/01 Vol. E90-B No. 3 pp. 439-439 Type of Manuscript: REPORT Category: Keyword:
	Summary \| Full Text:PDF (62.3KB)

High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum Koichi ICHIGE Yoshihisa ISHIKAWA Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2007/03/01 Vol. E90-A No. 3 pp. 546-552 Type of Manuscript: Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing) Category: Communications Keyword: direction of arrival estimation, array antenna, MUSIC method, Root-MUSIC method,
	Summary \| Full Text:PDF (573.5KB)

Beam-Space MUSIC DOA System Using Phase Shifter Seung-Wook NAH Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/02/01 Vol. E90-B No. 2 pp. 291-295 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: beamspace MUSIC, chip-sized phase shifter, DOA, quasi-orthogonal, correlation coefficient, microstrip array,
	Summary \| Full Text:PDF (338KB)

Accurate Source Number Detection Using Pre-Estimated Signal Subspace Yoshihisa ISHIKAWA Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/12/01 Vol. E89-B No. 12 pp. 3257-3265 Type of Manuscript: Special Section PAPER (Special Section on Software Defined Radio Technology and Its Applications) Category: Keyword: source number detection, array antenna, AIC, MDL, MUSIC method, beamformer method,
	Summary \| Full Text:PDF (515.2KB)

Implementation of S-Parameter of Active Elements for FDTD Analysis Naobumi MICHISHITA Takashi HIBINO Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2006/12/01 Vol. E89-C No. 12 pp. 1843-1850 Type of Manuscript: Special Section PAPER (Special Section on Emerging Microwave Techniques) Category: Passive Circuits/Components Keyword: FDTD, S-parameter, active element, implementation method, tunable band pass filter,
	Summary \| Full Text:PDF (578.9KB)

An Efficient Signed-Power-of-Two Term Allocation for Filter Coefficients in Digital Communication System Koichi ICHIGE Hideaki MUNEMASA Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/12/01 Vol. E89-B No. 12 pp. 3266-3268 Type of Manuscript: Special Section LETTER (Special Section on Software Defined Radio Technology and Its Applications) Category: Keyword: digital modulation, BER characteristics, cosine rolloff filter, SPT term,
	Summary \| Full Text:PDF (196KB)

Experimental Study of Jitter Effect on Digital Downconversion Receiver with Undersampling Scheme Minseok KIM Aiko KIYONO Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2005/07/01 Vol. E88-D No. 7 pp. 1430-1436 Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1) Category: Communications and Wireless Systems Keyword: clock jitter, undersampling, downconversion, DDC, EVM,
	Summary \| Full Text:PDF (505.3KB)

Three Beam Switched Top Loaded Monopole Antenna Naobumi MICHISHITA Yuji NAKAYAMA Hiroyuki ARAI Kohei MORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/06/01 Vol. E88-B No. 6 pp. 2291-2296 Type of Manuscript: Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation) Category: Keyword: unidirectional antenna, beam switched antenna, top loaded monopole antenna, planar antenna, front to back ratio,
	Summary \| Full Text:PDF (520.1KB)

Mutual Coupling Matrix Estimation and Null Forming Methods for MBF Antennas Hiromitsu AOYAMA Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/06/01 Vol. E88-B No. 6 pp. 2305-2312 Type of Manuscript: Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation) Category: Keyword: MBF antenna, phase shifter, mutual coupling, null forming, phase-only algorithm, perturbation,
	Summary \| Full Text:PDF (326.8KB)

Small Antennas: Downsizing Techniques and Its Index Factor Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/05/01 Vol. E88-B No. 5 pp. 1801-1808 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation Researches--Selected Papers Translated from the IEICE Transactions on Communications (Japanese Edition)--) Category: INVITED Keyword: small antenna, matching circuit, electrical volume, radiation efficiency, Wheeler method,
	Summary \| Full Text:PDF (265.3KB)

Mutual Coupling Characteristics of Choke Loaded Patch Array Antenna Naobumi MICHISHITA Hiroyuki ARAI Yasuko KIMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/01/01 Vol. E88-B No. 1 pp. 411-415 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword: mutual coupling, patch array antenna, choke, front to back ratio, side lobe level, repeater,
	Summary \| Full Text:PDF (426.2KB)

Stub Loaded Dual-Frequency Microstrip Antenna for 2 GHz and 5 GHz Use Shunsuke SAITO Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2004/12/01 Vol. E87-B No. 12 pp. 3747-3752 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: antenna, dual-frequency, microstrip, one point feed, open stub,
	Summary \| Full Text:PDF (708.4KB)

Implementation of FPGA Based Fast Unitary MUSIC DOA Estimator Minseok KIM Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2004/09/01 Vol. E87-C No. 9 pp. 1485-1494 Type of Manuscript: Special Section PAPER (Special Section on Wave Technologies for Wireless and Optical Communications) Category: Wireless Network System Performances Keyword: adaptive antenna, smart antenna, FPGA implementation, DOA estimation, MUSIC, EVD,
	Summary \| Full Text:PDF (989.8KB)

Dielectric Phase Shifter (DPS) Using Contact-Less Connector Hajime IZUMI Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/10/01 Vol. E86-B No. 10 pp. 2982-2986 Type of Manuscript: PAPER Category: Communication Devices/Circuits Keyword: dielectric phase shifter, strip conductor, sliding dielectric substrate, contact-less connector, FDTD method,
	Summary \| Full Text:PDF (426.7KB)

Cellular and PHS Base Station Antenna Systems Hiroyuki ARAI Keizo CHO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/03/01 Vol. E86-B No. 3 pp. 980-992 Type of Manuscript: INVITED PAPER (Special Issue on Historical Review of Antenna Systems in Japan) Category: Keyword: cellular system, phase shifter, multi band antenna, diversity antenna, PHS, adaptive antenna,
	Summary \| Full Text:PDF (1.1MB)

A Fast Algebraic Approach to the Eigenproblems of Correlation Matrices in DOA Estimation Koichi ICHIGE Masashi SHINAGAWA Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/02/01 Vol. E86-B No. 2 pp. 865-869 Type of Manuscript: LETTER Category: Antenna and Propagation Keyword: adaptive array antenna, DOA estimation, eigenproblems, MUSIC method,
	Summary \| Full Text:PDF (399.5KB)

Design of Jacobi EVD Processor Based on CORDIC for DOA Estimation with MUSIC Algorithm Minseok KIM Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2002/12/01 Vol. E85-B No. 12 pp. 2648-2655 Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications) Category: Keyword: adaptive antenna, FPGA implementation, DOA estimation, MUSIC, EVD,
	Summary \| Full Text:PDF (604.7KB)

FDTD Analysis of Low Profile Top Loaded Monopole Antenna Huiling JIANG Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2002/11/01 Vol. E85-B No. 11 pp. 2468-2475 Type of Manuscript: PAPER Category: Antenna and Propagation Keyword: FDTD method, non-uniform mesh, top loaded monopole antenna, antenna's miniaturization,
	Summary \| Full Text:PDF (1.6MB)

Electromagnetically Coupled Power Divider Using Parasitic Element Hajime IZUMI Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2001/10/01 Vol. E84-C No. 10 pp. 1597-1601 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: power divider, parasitic element, FDTD method, electromagnetically coupled, DC-break,
	Summary \| Full Text:PDF (768.1KB)

Concept and Evaluation of a 2-D FDTD Formulation Based on Expanded Wave Equation Approach Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2001/07/01 Vol. E84-C No. 7 pp. 981-993 Type of Manuscript: PAPER Category: Electromagnetic Theory Keyword: computational electromagnetics, FDTD formulation, wave equation, Maxwell's equations,
	Summary \| Full Text:PDF (1.5MB)

Experiments of DOA Estimation by DBF Array Antenna at 2.6 GHz Kohei MORI Yuki INOUE Koichi ICHIGE Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/07/01 Vol. E84-B No. 7 pp. 1871-1875 Type of Manuscript: Special Section LETTER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications) Category: Keyword: DBF array antenna, DOA estimation, MUSIC algorithm, estimation error,
	Summary \| Full Text:PDF (533.7KB)

Analysis of Computation Error in Antenna's Simulation by Using Non-Uniform Mesh FDTD Huiling JIANG Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2000/07/20 Vol. E83-B No. 7 pp. 1544-1553 Type of Manuscript: PAPER Category: Antenna and Propagation Keyword: FDTD method, non-uniform mesh, linear interpolation, quadratic interpolation,
	Summary \| Full Text:PDF (1.4MB)

Ribbon-Wire Interconnect Using Parasitic Element Hajime IZUMI Hiroyuki ARAI Tatsuo ITOH
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1999/04/20 Vol. E82-C No. 4 pp. 662-664 Type of Manuscript: LETTER Category: Microwave and Millimeter Wave Technology Keyword: ribbon-wire bonding, interconnect, DC-break, parasitic element, electromagnetic coupling, FDTD method,
	Summary \| Full Text:PDF (112.3KB)

A Rotating Mode Radial Line Slot Antenna Fed by a Cavity Resonator Seiji HOSONO Jiro HIROKAWA Makoto ANDO Naohisa GOTO Hiroyuki ARAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1995/03/20 Vol. E78-B No. 3 pp. 407-413 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: RLSA, rotational symmetry, concentric array, rotating mode, cavity resonator,
	Summary \| Full Text:PDF (606.1KB)

Improvement of the Isolation Characteristics of a Two-Layer Self-Diplexing Array Antenna Using a Circularly Polarized Ring Patch Antenna Wataru CHUJO Masayuki FUJISE Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1993/07/20 Vol. E76-B No. 7 pp. 755-758 Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference) Category: Keyword: antennas and propagation, self-diplexing antenna, array antenna, ring patch, circular polarization,
	Summary \| Full Text:PDF (258.8KB)

Vehicular Diversity Flat Antenna at 900 MHz Hiroyuki ARAI Hideki IWASHITA Naohisa GOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1991/10/20 Vol. E74-B No. 10 pp. 3222-3226 Type of Manuscript: Special Section PAPER (Special Issue on Mobile Communication Antennas) Category: Keyword:
	Summary \| Full Text:PDF (369.5KB)

A Two-Layer Self-Diplexing Antenna Using a Circularly Polarized Ring Patch Antenna Wataru CHUJO Masayuki FUJISE Masayuki NAKANO Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1991/10/20 Vol. E74-B No. 10 pp. 3261-3267 Type of Manuscript: Special Section PAPER (Special Issue on Mobile Communication Antennas) Category: Keyword:
	Summary \| Full Text:PDF (576.1KB)

Microstrip Antenna on Pyramidal Ground Plane of Wide Beamwidth Hiroyuki ARAI Yutaka IMAIZUMI Masahiro TOKI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1990/05/20 Vol. E73-E No. 5 pp. 681-683 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword:
	Summary \| Full Text:PDF (193.8KB)

A Coupling Coefficient of a Rectangular Waveguide Connected on a Overmoded Circular Waveguide Ryota HIROSE Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1989/11/20 Vol. E72-E No. 11 pp. 1219-1223 Type of Manuscript: PAPER Category: Electromagnetic Theory Keyword:
	Summary \| Full Text:PDF (337.4KB)

An Analysis of Multi-Hole Directional Coupler Hiroshi NISHIWAKI Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1989/09/20 Vol. E72-E No. 9 pp. 979-983 Type of Manuscript: PAPER Category: Electromagnetic Theory Keyword:
	Summary \| Full Text:PDF (379KB)

A UHF-TV Antenna Using Skeleton-Slot Array Hiroyuki ARAI Katunori AOKI Kimio SAKURAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1988/08/20 Vol. E71-E No. 8 pp. 741-743 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword:
	Summary \| Full Text:PDF (150.5KB)

A Hole Coupling of Directional Coupler on Overmoded Circular Waveguide Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1987/09/20 Vol. E70-E No. 9 pp. 807-808 Type of Manuscript: LETTER Category: Microwave and Millimeter Wave Technology Keyword:
	Summary \| Full Text:PDF (101.5KB)

A Pill-Box Shaped Vacuum Window Connected with Circular Waveguides Kunihito USUI Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1987/07/20 Vol. E70-E No. 7 pp. 646-651 Type of Manuscript: PAPER Category: Electromagnetic Theory Keyword:
	Summary \| Full Text:PDF (350.4KB)

An Approximate Analysis of a Multi-Slotted Directional Coupler for Monitoring the Output of Gyrotron Hiroshi NISHIWAKI Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1987/04/20 Vol. E70-E No. 4 pp. 253-254 Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1987 National Convention IEICE) Category: Electro Magnetic Theory and Microwave Circuits Keyword:
	Summary \| Full Text:PDF (141.3KB)

A Matching Circuit of a T-Shaped Ridge Waveguide Using Loaded Probes Hiroyuki ARAI Naohisa GOTO
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1986/11/20 Vol. E69-E No. 11 pp. 1167-1168 Type of Manuscript: LETTER Category: Microwaves Keyword:
	Summary \| Full Text:PDF (115KB)