Nobuyoshi KIKUMA


Effect of User Antenna Selection on Block Beamforming Algorithms for Suppressing Inter-User Interference in Multiuser MIMO System
Nobuyoshi KIKUMA Kentaro NISHIMORI Takefumi HIRAGURI 
Publication:   
Publication Date: 2018/07/01
Vol. E101-B  No. 7  pp. 1523-1535
Type of Manuscript:  INVITED PAPER (Special Section on Communication Quality in Wireless Networks)
Category: 
Keyword: 
multiuser MIMOblock beamforminguser antenna selectionachievable bit ratethroughput
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An Investigation on Self-Resonant and Capacitor-Loaded Helical Antennas for Coupled-Resonant Wireless Power Transfer
Hiroshi HIRAYAMA Tomohiro AMANO Nobuyoshi KIKUMA Kunio SAKAKIBARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2431-2439
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
Category: Antennas
Keyword: 
wireless power transfercoupled resonanthelical antennaself resonance
 Summary | Full Text:PDF(3.6MB)

Automated Creation of Beamformer-Based Optimum DOA Estimation Algorithm Using Genetic Algorithm
Shunsuke YOSHIMURA Hiroshi HIRAYAMA Nobuyoshi KIKUMA Kunio SAKAKIBARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3332-3336
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
array antennaDOA estimationgenetic algorithmgenetic programmingPolish notationcombinatorial optimization
 Summary | Full Text:PDF(921.9KB)

Millimeter-Wave Microstrip-Line-Fed Broadband Waveguide Aperture Antennas
Shintaro YANO Kunio SAKAKIBARA Nobuyoshi KIKUMA Hiroshi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 34-40
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010)
Category: Antennas
Keyword: 
Millimeter-Wave AntennaWaveguideLTCC substrate
 Summary | Full Text:PDF(1.4MB)

Broadband Millimeter-Wave Microstrip Comb-Line Antenna Using Corporate Feeding System with Center-Connecting
Atsushi KUNITA Kunio SAKAKIBARA Kazuyuki SEO Nobuyoshi KIKUMA Hiroshi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 41-50
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010)
Category: Antennas
Keyword: 
millimeter-wavemicrostrip antennaarray antenna
 Summary | Full Text:PDF(2.1MB)

Channel Capacity Improvement in Short-Range MIMO Using Side and Back Reflectors
Hiroshi HIRAYAMA Gen MATSUI Nobuyoshi KIKUMA Kunio SAKAKIBARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/05/01
Vol. E94-B  No. 5  pp. 1280-1283
Type of Manuscript:  Special Section LETTER (Special Section on Antenna and Propagation Technologies Contributing to Diversification of Wireless Technologies)
Category: Antennas
Keyword: 
short-range MIMOFDTDeigen value distributionMIMO antenna
 Summary | Full Text:PDF(692.7KB)

Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band
Kazuyuki SEO Kunio SAKAKIBARA Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/05/01
Vol. E94-B  No. 5  pp. 1184-1193
Type of Manuscript:  Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Diversification of Wireless Technologies)
Category: Antennas and Antenna Measurement
Keyword: 
microstrip transitionmillimeter-wave circuitwaveguide transitioncomb-line antenna
 Summary | Full Text:PDF(2.8MB)

Narrow-Wall-Slotted Hollow-Waveguide Array Antenna Using Partially Parallel Feeding System in Millimeter-Wave Band
Yuki IKENO Kunio SAKAKIBARA Nobuyoshi KIKUMA Hiroshi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2545-2553
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: 
millimeter-wave antennawaveguidefeeding circuitarray antenna
 Summary | Full Text:PDF(1.7MB)

A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas
Hiroshi HIRAYAMA Nobuyoshi KIKUMA Kunio SAKAKIBARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2666-2669
Type of Manuscript:  Special Section LETTER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
Category: Antennas
Keyword: 
RFIDselective diversityloop antennawireless power feeding
 Summary | Full Text:PDF(651.8KB)

Control of Power Dividing Ratio in Four-Way Power Divider for Feeding Microstrip Comb-Line Antenna
Morihiko NANJO Kunio SAKAKIBARA Nobuyoshi KIKUMA Hiroshi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2651-2654
Type of Manuscript:  Special Section LETTER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
Category: Antennas
Keyword: 
millimeter-wavearray antennamicrostrip antennacomb-line antenna
 Summary | Full Text:PDF(524.8KB)

Narrow-Wall-Connected Microstrip-to-Waveguide Transition Using V-Shaped Patch Element in Millimeter-Wave Band
Kazuyuki SEO Kunio SAKAKIBARA Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2523-2530
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: 
microstrip transitionsmillimeter-wave circuitwaveguide transitions
 Summary | Full Text:PDF(1.3MB)

An Estimation Method of Poynting Vector with Near-Magnetic-Field Measurement
Hiroshi HIRAYAMA Nobuyoshi KIKUMA Kunio SAKAKIBARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/01/01
Vol. E93-C  No. 1  pp. 66-73
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
electro-magnetic interferencenear-field measurementshielded loop probepoynting vectoryee cell
 Summary | Full Text:PDF(861KB)

Broadband Planar Antenna Combining Monopole Element with Electromagnetic Bandgap
Kazuoki MATSUGATANI Kunio SAKAKIBARA Nobuyoshi KIKUMA Hiroshi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/11/01
Vol. E91-C  No. 11  pp. 1778-1785
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
antennaEBGmonopoleplanarmicrowave
 Summary | Full Text:PDF(990.7KB)

Design and Optimization of Millimeter-Wave Microstrip-to-Waveguide Transition Operating over Broad Frequency Bandwidth
Yusuke DEGUCHI Kunio SAKAKIBARA Nobuyoshi KIKUMA Hiroshi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/01/01
Vol. E90-C  No. 1  pp. 157-164
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
millimeter wave technologymillimeter wave circuitsmicrostrip circuitswaveguides
 Summary | Full Text:PDF(1MB)

Iterative DOA Estimation Using Subspace Tracking Methods and Adaptive Beamforming
Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/05/01
Vol. E88-B  No. 5  pp. 1818-1828
Type of Manuscript:  INVITED PAPER (Special Section on Recent Progress in Antennas and Propagation Researches--Selected Papers Translated from the IEICE Transactions on Communications (Japanese Edition)--)
Category: 
Keyword: 
DOA estimationMUSICESPRITsubspace trackingadaptive antenna
 Summary | Full Text:PDF(581.5KB)

Adaptive Antennas
Nobuyoshi KIKUMA Mitoshi FUJIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/03/01
Vol. E86-B  No. 3  pp. 968-979
Type of Manuscript:  INVITED PAPER (Special Issue on Historical Review of Antenna Systems in Japan)
Category: 
Keyword: 
adaptive antennacoherent interferencebeam steering errorbroadband signalmobile communication
 Summary | Full Text:PDF(1.2MB)

A Novel Adaptive Array Utilizing Frequency Characteristics of Multi-Carrier Signals
Mitoshi FUJIMOTO Kunitoshi NISHIKAWA Tsutayuki SHIBATA Nobuyoshi KIKUMA Naoki INAGAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/02/25
Vol. E83-B  No. 2  pp. 371-379
Type of Manuscript:  PAPER
Category: Radio Communication
Keyword: 
adaptive arraymobile communicationmulti-carrierCMA
 Summary | Full Text:PDF(1.4MB)

Hallen Type Integral Equation for Cylindrical Antennas with Finite Gap Excitation
Di WU Naoki INAGAKI Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/12/25
Vol. E82-B  No. 12  pp. 2145-2152
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
integral equationcylindrical antennafinite gap excitationexternal and internal currentmoment method
 Summary | Full Text:PDF(1.2MB)

An Efficient ICT Method for Analysis of Co-planar Dipole Antenna Arrays of Arbitrary Lengths
Adam Icarus IMORO Ippo AOKI Naoki INAGAKI Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/03/25
Vol. E81-B  No. 3  pp. 659-667
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
MoMICTco-planar dipole arraystrial functionvariational principleinput impedanceCAD/CAE applications
 Summary | Full Text:PDF(746.1KB)

An Improved Circuit Theory for the Analysis of Longer Co-planar Dipole Antennas
Adam Icarus IMORO Yoshihisa KANI Naoki INAGAKI Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/02/25
Vol. E80-B  No. 2  pp. 389-394
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
ICTtrial functioninput impedance CAD/CAEMoM
 Summary | Full Text:PDF(375KB)

The Differential CMA Adaptive Array Antenna Using an Eigen-Beamspace System
Kentaro NISHIMORI Nobuyoshi KIKUMA Naoki INAGAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/11/25
Vol. E78-B  No. 11  pp. 1480-1488
Type of Manuscript:  Special Section PAPER (Special Issue on Adaptive Signal Processing Technology in Antennas)
Category: 
Keyword: 
adaptive arraydifferential CMAeigen-beamspace systemmobile communicationMarquardt methodsteepest descent method
 Summary | Full Text:PDF(659.7KB)

High-Resolution Techniques in Signal Processing Antennas
Yasutaka OGAWA Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/11/25
Vol. E78-B  No. 11  pp. 1435-1442
Type of Manuscript:  INVITED PAPER (Special Issue on Adaptive Signal Processing Technology in Antennas)
Category: 
Keyword: 
null steeringsuperresolution techniqueMUSIC algorithmRoot MUSICradar imaging
 Summary | Full Text:PDF(585KB)

FOREWORD
Yasutaka OGAWA Kenichi KAGOSHIMA Ryuji: KOHNO Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/11/25
Vol. E78-B  No. 11  pp. 1433-1434
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(209.8KB)

A Use of Current Continuity Condition in GTD-MM Hybrid Technique
Xu ZHANG Naoki INAGAKI Nobuyoshi KIKUMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1991/07/25
Vol. E74-C  No. 7  pp. 2055-2060
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
 Summary | Full Text:PDF(480.5KB)

The Tamed Adaptive Array for Imperfect Constraint Due to Mutual Coupling or Random Input Errors
Nobuyoshi KIKUMA Kazuaki TAKAO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/25
Vol. E70-E  No. 4  pp. 430-434
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
 Summary | Full Text:PDF(389.7KB)

A Directionally Constrained Adaptive Array with Phase-Only Control
Nobuyoshi KIKUMA Kazuaki TAKAO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1985/05/25
Vol. E68-E  No. 5  pp. 325-330
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
 Summary | Full Text:PDF(332.4KB)