IEICE Trans

Kentaro NISHIMORI

Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO Kentaro NISHIMORI Kazuki MARUTA Takefumi HIRAGURI Hidehisa SHIOMI
Publication: Publication Date: 2022/10/01 Vol. E105-B No. 10 pp. 1154-1161 Type of Manuscript: Special Section PAPER (Special Section on Multidisciplinary and Innovative Key technologies in Advanced communication systems (MIKA)) Category: Keyword: constant modulus, blind algorithm, variable step size, multibeam, massive MIMO, QAM,
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Multibeam Patterns Suitable for Massive MIMO Configurations Kentaro NISHIMORI Jiro HIROKAWA
Publication: Publication Date: 2022/10/01 Vol. E105-B No. 10 pp. 1162-1172 Type of Manuscript: Special Section PAPER (Special Section on Multidisciplinary and Innovative Key technologies in Advanced communication systems (MIKA)) Category: Keyword: massive multiple input multiple output, analog multibeam, butler matrix, independent component analysis, uplink,
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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 MIMO, block beamforming, user antenna selection, achievable bit rate, throughput,
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Novel Access Control Scheme with Collision Detection Utilizing MIMO Transmission Procedure in WLAN Systems Takefumi HIRAGURI Kentaro NISHIMORI Yoshiaki MORINO Mamoru UGAJIN Hideaki YOSHINO
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1561-1574 Type of Manuscript: Special Section PAPER (Special Section on Communication Quality in Wireless Networks) Category: Keyword: MIMO, access control, WLAN, collision detection, orthogonally polarized antenna,
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Dynamic Group-Based Antenna Selection for Uplink Multi-User MIMO in Distributed Antenna System Sho YOSHIDA Kentaro NISHIMORI Soichi ITO Tomoki MURAKAMI Koichi ISHIHARA Yasushi TAKATORI
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1552-1560 Type of Manuscript: Special Section PAPER (Special Section on Communication Quality in Wireless Networks) Category: Keyword: multi-user multiple-input multiple-output (MU-MIMO), distributed antenna system (DAS), antenna selection, ray-tracing method, cable loss,
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Multi-Beam Massive MIMO with Beam-Selection Using Only Amplitude Information in Uplink Channel Fumiya MURAMATSU Kentaro NISHIMORI Ryotaro TANIGUCHI Takefumi HIRAGURI
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1544-1551 Type of Manuscript: Special Section PAPER (Special Section on Communication Quality in Wireless Networks) Category: Keyword: massive MIMO, hybrid analog-digital beamforming, constant modulus algorithm, beam-selection method,
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CSI Feedback Reduction Method for Downlink Multiuser MIMO Transmission Using Dense Distributed Antenna Selection Tomoki MURAKAMI Koichi ISHIHARA Yasushi TAKATORI Masato MIZOGUCHI Kentaro NISHIMORI
Publication: Publication Date: 2018/02/01 Vol. E101-B No. 2 pp. 426-433 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016) Category: MIMO Keyword: multiuser multiple input multiple output (MU-MIMO), antenna selection, wireless LAN (WLAN), distributed antenna system (DAS), channel state information (CSI),
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Inter-Terminal Interference Evaluation of Full Duplex MIMO Using Measured Channel Yuta KASHINO Masakuni TSUNEZAWA Naoki HONMA Kentaro NISHIMORI
Publication: Publication Date: 2018/02/01 Vol. E101-B No. 2 pp. 434-440 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016) Category: MIMO Keyword: MIMO, full duplex, interference reduction, inter-terminal interference,
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Precise Indoor Localization Method Using Dual-Facing Cameras on a Smart Device via Visible Light Communication Yohei NAKAZAWA Hideo MAKINO Kentaro NISHIMORI Daisuke WAKATSUKI Makoto KOBAYASHI Hideki KOMAGATA
Publication: Publication Date: 2017/11/01 Vol. E100-A No. 11 pp. 2295-2303 Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems) Category: Vision Keyword: visible light communication, indoor localization, visually impaired, pedestrian navigation, smart device,
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Multi-Beam Massive MIMO Using Constant Modulus Algorithm for QAM Signals Employing Amplitude and Phase Offset Compensation Ryotaro TANIGUCHI Kentaro NISHIMORI Hideo MAKINO
Publication: Publication Date: 2017/02/01 Vol. E100-B No. 2 pp. 262-268 Type of Manuscript: Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Realization of Next Generation Wireless Systems) Category: Keyword: massive MIMO, multi-beam, constant modulus algorithm, quadrature amplitude and phase modulation,
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A Novel Collision Avoidance Scheme Using Optimized Contention Window in Dense Wireless LAN Environments Yoshiaki MORINO Takefumi HIRAGURI Hideaki YOSHINO Kentaro NISHIMORI Takahiro MATSUDA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2016/11/01 Vol. E99-B No. 11 pp. 2426-2434 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: IEEE802.11 MAC, contention window, transmission efficiency,
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Simultaneous Decoupling and Matching Technique for Short-Range MIMO Kentaro MURATA Naoki HONMA Kentaro NISHIMORI Naobumi MICHISHITA Hisashi MORISHITA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2016/08/01 Vol. E99-B No. 8 pp. 1846-1858 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: short-range MIMO, decoupling and matching network,
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FFT-Based Block Diagonalization at User Terminal for Implicit Beamforming in Multiuser MIMO System Hayate KIMOTO Kentaro NISHIMORI Takefumi HIRAGURI Hideo MAKINO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2016/01/01 Vol. E99-B No. 1 pp. 115-123 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014) Category: Antennas and Propagation Keyword: multiuser MIMO, block diagonalization, FFT, implicit beamforming, IEEE802.11ac, eigenvalue,
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Four-Stream Parallel Transmission for Short-Range MIMO Using Only Passive Analog Components Kentaro MURATA Naoki HONMA Kentaro NISHIMORI David M. KLYMYSHYN Hisashi MORISHITA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2016/01/01 Vol. E99-B No. 1 pp. 69-80 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014) Category: Antennas and Propagation Keyword: short-range MIMO, eigenmode transmission, 180-degree hybrid coupler,
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Estimating Living-Body Location Using Bistatic MIMO Radar in Multi-Path Environment Keita KONNO Naoki HONMA Dai SASAKAWA Kentaro NISHIMORI Nobuyasu TAKEMURA Tsutomu MITSUI Yoshitaka TSUNEKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/11/01 Vol. E98-B No. 11 pp. 2314-2321 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: MIMO, living-body location, DOA estimation, microwave sensor, array antenna,
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Interference Reduction Characteristics by Circular Array Based Massive MIMO in a Real Microcell Environment Ryochi KATAOKA Kentaro NISHIMORI Ngochao TRAN Tetsuro IMAI Hideo MAKINO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/08/01 Vol. E98-B No. 8 pp. 1447-1455 Type of Manuscript: Special Section PAPER (Special Section on 5G Radio Access Networks―Part I: Radio Access Technologies and System Design) Category: Keyword: massive MIMO, circular array, microcell, maximum ratio combining, zero forcing, channel sounder,
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Survey of Transmission Methods and Efficiency Using MIMO Technologies for Wireless LAN Systems Takefumi HIRAGURI Kentaro NISHIMORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/07/01 Vol. E98-B No. 7 pp. 1250-1267 Type of Manuscript: INVITED SURVEY PAPER Category: Keyword: MIMO, MU-MIMO, transmission efficiency, overhead, access control, MAC protocol, CSI feedback, implicit beamforming, PHY,
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Interference Suppression Method between Primary Broadcasting and Secondary Systems Using Load Modulation Takuma ITO Naoki HONMA Keisuke TERASAKI Kentaro NISHIMORI Yoshitaka TSUNEKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/05/01 Vol. E98-B No. 5 pp. 861-869 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: load modulation, frequency sharing, interference control, channel capacity,
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Multicast Transmission Access Control Methods for Various Wireless LAN Applications Toshiyuki OGAWA Takefumi HIRAGURI Kentaro NISHIMORI Hideaki YOSHINO Kenya JIN'NO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/11/01 Vol. E97-B No. 11 pp. 2534-2542 Type of Manuscript: PAPER Category: Terrestrial Wireless Communication/Broadcasting Technologies Keyword: Interference wave, multicast transmission, packet collision, packet loss, WLAN,
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Channel Estimation Method Using Arbitrary Amplitude and Phase Modulation Schemes for MIMO Sensor Tsubasa TASHIRO Kentaro NISHIMORI Tsutomu MITSUI Nobuyasu TAKEMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/10/01 Vol. E97-B No. 10 pp. 2102-2109 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems) Category: Keyword: MIMO sensor, frequency offset, timing offset, roll-off filter, quadrature amplitude modulation,
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Transmission Rate by User Antenna Selection for Block Diagonalization Based Multiuser MIMO System Kentaro NISHIMORI Takefumi HIRAGURI Hideo MAKINO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/10/01 Vol. E97-B No. 10 pp. 2118-2126 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems) Category: Keyword: multiuser MIMO, block diagonalization, user antenna selection, IEEE802.11ac, eigenvalue,
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Analog Decoding Method for Simplified Short-Range MIMO Transmission Ryochi KATAOKA Kentaro NISHIMORI Takefumi HIRAGURI Naoki HONMA Tomohiro SEKI Ken HIRAGA Hideo MAKINO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/03/01 Vol. E97-B No. 3 pp. 620-630 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: short-range MIMO transmission, zero forcing, unitary matrix, 90-degree phase shifter, optimal element spacing,
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A Study of Short-Range MIMO Transmission Utilizing Polarization Multiplexing for the Simplification of Decoding Ken HIRAGA Kazumitsu SAKAMOTO Kentaro NISHIMORI Tomohiro SEKI Tadao NAKAGAWA Kazuhiro UEHARA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/02/01 Vol. E97-B No. 2 pp. 459-468 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: short-range, MIMO, polarization multiplexing, XPD, antennas, decoding,
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Intruder Detection Performance of SIMO and MIMO Sensors with Same Number of Channel Responses Keita USHIKI Kentaro NISHIMORI Naoki HONMA Hideo MAKINO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/10/01 Vol. E96-B No. 10 pp. 2499-2505 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012) Category: Adaptive Array Antennas/MIMO Keyword: MIMO Sensor, SISO sensor, time variant channel, channel matrix,
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Compact Antenna Arrangement for MIMO Sensor in Indoor Environment Naoki HONMA Kentaro NISHIMORI Hiroaki SATO Yoshitaka TSUNEKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/10/01 Vol. E96-B No. 10 pp. 2491-2498 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012) Category: Adaptive Array Antennas/MIMO Keyword: MIMO sensor, antenna, element spacing,
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Non-iterative Algorithm of MIMO Adaptive Array Based on Correlation Matrix Including Parasitic Antennas Naoki HONMA Kentaro NISHIMORI Takefumi HIRAGURI Yoshitaka TSUNEKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/07/01 Vol. E96-B No. 7 pp. 1945-1952 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: adaptive array, tunable reactance device, MIMO, correlation matrix,
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Interference Rejection Characteristics by Adaptive Array at User Equipment Using Measured K-Factor in Heterogeneous Networks Kentaro NISHIMORI Keisuke KUSUMI Misaki HORIO Koshiro KITAO Tetsuro IMAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/06/01 Vol. E96-B No. 6 pp. 1256-1264 Type of Manuscript: Special Section PAPER (Special Section on Heterogeneous Networks for Future Cellular Systems) Category: Keyword: heterogeneous networks, adaptive array, user equipment, K-factor, zero forcing,
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User-Oriented QoS Control Method Based on CSMA/CA for IEEE802.11 Wireless LAN System Akira KISHIDA Masashi IWABUCHI Toshiyuki SHINTAKU Tetsu SAKATA Takefumi HIRAGURI Kentaro NISHIMORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/02/01 Vol. E96-B No. 2 pp. 419-429 Type of Manuscript: Special Section PAPER (Special Section on Quality of Communication Services Improving Quality of Life) Category: Keyword: user-oriented, QoS, fixed backoff, CSMA/CA, IEEE802.11,
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Single Antenna Relay System Using De-Noise and Forward Scheme for MIMO Transmission Kosuke KINAMI Naoki HONMA Kentaro NISHIMORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/01/01 Vol. E95-B No. 1 pp. 113-115 Type of Manuscript: Special Section LETTER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010) Category: Radio Systems Keyword: MIMO, Relay, DNF,
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Effectiveness of Short-Range MIMO Using Dual-Polarized Antenna Ken HIRAGA Tomohiro SEKI Kentaro NISHIMORI Kazuhiro UEHARA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/01/01 Vol. E95-B No. 1 pp. 87-96 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010) Category: Radio Systems Keyword: short-range MIMO, dual-polarization, array antennas, parallel transmission, high-speed transmission,
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Analyses of Antenna Displacement in Short-Range MIMO Transmission over Millimeter-Wave Ken HIRAGA Tomohiro SEKI Kentaro NISHIMORI Kenjiro NISHIKAWA Ichihiko TOYODA Kazuhiro UEHARA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/10/01 Vol. E94-B No. 10 pp. 2891-2895 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword: short-range, MIMO, millimeter-wave, antennas, parallel transmission,
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Cognitive Radio Operation under Directional Primary Interference and Practical Path Loss Models Kentaro NISHIMORI Rocco DI TARANTO Hiroyuki YOMO Petar POPOVSKI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/05/01 Vol. E94-B No. 5 pp. 1243-1253 Type of Manuscript: Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Diversification of Wireless Technologies) Category: Radio System Keyword: cognitive radio, spatial opportunity, directional antenna, heterogeneous propagation path loss conditions, target CIR, antenna height,
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Power Saving Control Method for Battery-Powered Portable Wireless LAN Access Points in an Overlapping BSS Environment Masakatsu OGAWA Takefumi HIRAGURI Kentaro NISHIMORI Naoki HONMA Kazuhiro TAKAYA Kazuo MURAKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/03/01 Vol. E94-B No. 3 pp. 658-666 Type of Manuscript: Special Section PAPER (Special Section on Information and Communication Technologies for Next-generation Mobile Multimedia Life) Category: Keyword: IEEE802.11, power saving, portable access point, overlapping BSS,
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Development of Multi Channel Ad-Hoc Network System Kentaro NISHIMORI Takefumi HIRAGURI Masakatsu OGAWA Naoki HONMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/03/01 Vol. E94-B No. 3 pp. 667-675 Type of Manuscript: Special Section PAPER (Special Section on Information and Communication Technologies for Next-generation Mobile Multimedia Life) Category: Keyword: ad-hoc networks, vertical antenna arrangement, distributed channel allocation, multi channels,
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A Stochastic Approach to Design MIMO Antenna with Parasitic Elements Based on Propagation Characteristics Naoki HONMA Kentaro NISHIMORI Riichi KUDO Yasushi TAKATORI Takefumi HIRAGURI Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/10/01 Vol. E93-B No. 10 pp. 2578-2585 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, parasitic antennas, mobile antennas, Yagi-Uda arrays,
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A Novel Interference Avoidance Technique on Mobile Wireless Routers Using IEEE802.11n PSMP Akira KISHIDA Takefumi HIRAGURI Masakatsu OGAWA Kentaro NISHIMORI Naoki HONMA Tetsu SAKATA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/08/01 Vol. E93-B No. 8 pp. 2053-2062 Type of Manuscript: Special Section PAPER (Special Section on Implementation, Experiments, and Practice for Ad Hoc and Mesh Networks) Category: Keyword: IEEE802.11n, IEEE802.16e, mutual system interference, PSMP, wireless relay,
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Transmission History Based Distributed Adaptive Contention Window Adjustment Algorithm Cooperating with Automatic Rate Fallback for Wireless LANs Masakatsu OGAWA Takefumi HIRAGURI Kentaro NISHIMORI Kazuhiro TAKAYA Kazuo MURAKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/08/01 Vol. E93-B No. 8 pp. 2063-2072 Type of Manuscript: Special Section PAPER (Special Section on Implementation, Experiments, and Practice for Ad Hoc and Mesh Networks) Category: Keyword: IEEE 802.11, CSMA/CA, contention window adjustment, automatic rate fallback,
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1616 MIMO Testbed for MU-MIMO Downlink Transmission Kentaro NISHIMORI Riichi KUDO Naoki HONMA Yasushi TAKATORI Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/02/01 Vol. E93-B No. 2 pp. 345-352 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiuser MIMO, adaptive modulation scheme, OFDM, eigenvalue, bit interleaver,
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A New User Selection Measure in Block Diagonalization Algorithm for Multiuser MIMO Systems Riichi KUDO Yasushi TAKATORI Kentaro NISHIMORI Atsushi OHTA Shuji KUBOTA Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/10/01 Vol. E92-B No. 10 pp. 3206-3218 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiuser MIMO, user selection, block diagonalization, channel capacity,
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Overlap Frequency-Domain Multiuser Detection for Asynchronous Uplink Multiuser MIMO-OFDM Systems Koichi ISHIHARA Yasushi TAKATORI Kentaro NISHIMORI Kazuyasu OKADA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/05/01 Vol. E92-B No. 5 pp. 1582-1588 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution) Category: Keyword: multiuser MIMO (MU-MIMO), multiuser detection (MUD), OFDM, uplink, timing offset, inter-block interference (IBI),
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Antenna Selection Method for Terminal Antennas Employing Orthogonal Polarizations and Patterns in Outdoor Multiuser MIMO System Naoki HONMA Riichi KUDO Kentaro NISHIMORI Yasushi TAKATORI Atsushi OHTA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/06/01 Vol. E91-B No. 6 pp. 1752-1759 Type of Manuscript: Special Section PAPER (Special Section on 2007 International Symposium on Antennas and Propagation) Category: Smart Antennas & MIMO Keyword: MIMO, multiuser, urban environment, polarization, pattern, antenna selection,
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New Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO Yasushi TAKATORI Riichi KUDO Atsushi OHTA Koichi ISHIHARA Kentaro NISHIMORI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/09/01 Vol. E90-B No. 9 pp. 2312-2320 Type of Manuscript: Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation) Category: Smart Antennas Keyword: multiuser MIMO, uplink, beamforming, frequency offset,
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New Downlink Beamforming Method for Cooperative Multiple Access Point Systems Riichi KUDO Yasushi TAKATORI Kentaro NISHIMORI Atsushi OHTA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/09/01 Vol. E90-B No. 9 pp. 2303-2311 Type of Manuscript: Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation) Category: Smart Antennas Keyword: MIMO, downlink, beamforming, multiple access point system,
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Novel Downlink Beamforming Method Using Selective STBC with Common Eigenvectors for MIMO-OFDM Systems Riichi KUDO Yasushi TAKATORI Kentaro NISHIMORI Koichi TSUNEKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/08/01 Vol. E89-B No. 8 pp. 2170-2179 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: MIMO, eigenvector, OFDM, achievable spectrum efficiency, STBC, beamforming, maximum Doppler frequency, feedback overhead,
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Frequency Correlation Characteristics Due to Antenna Configurations in Broadband MIMO Transmission Kentaro NISHIMORI Nobuhiko TACHIKAWA Yasushi TAKATORI Riichi KUDO Koichi TSUNEKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/06/01 Vol. E88-B No. 6 pp. 2438-2445 Type of Manuscript: Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation) Category: Keyword: MIMO, frequency correlation, antenna arrangement, OFDM, delay signals, angular spread,
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Adaptive Base Station Antenna Configuration Suitable for Street Microcells Considering Propagation Environment Keizo CHO Kentaro NISHIMORI Toshikazu HORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/01/01 Vol. E86-B No. 1 pp. 435-442 Type of Manuscript: PAPER Category: Antenna and Propagation Keyword: adaptive antenna, street microcell, base station antenna, element arrangement, angle of arrival of delayed waves,
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A Novel Configuration for Realizing Automatic Calibration of Adaptive Array Using Dispersed SPDT Switches for TDD Systems Kentaro NISHIMORI Keizo CHO Yasushi TAKATORI Toshikazu HORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/09/01 Vol. E84-B No. 9 pp. 2516-2522 Type of Manuscript: Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems) Category: Adaptive Antennas Keyword: adaptive array, TDD systems, dispersed switches, automatic calibration method,
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Adaptive Array for Reducing High-Power CCI on Asynchronous TDD Systems Kentaro NISHIMORI Keizo CHO Yasushi TAKATORI Toshikazu HORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/07/01 Vol. E84-B No. 7 pp. 1727-1734 Type of Manuscript: Special Section PAPER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications) Category: Adaptive Algorithms and Experiments Keyword: adaptive array, asynchronous TDD systems, power inversion, MMSE, guard time,
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Adaptive Array Employing Eigenvector Beam of Maximum Eigenvalue and Fractionally-Spaced TDL with Real Tap Yasushi TAKATORI Keizo CHO Kentaro NISHIMORI Toshikazu HORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2000/08/25 Vol. E83-B No. 8 pp. 1678-1687 Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications) Category: Keyword: adaptive array, digital beamforming, eigenvector beam, high-speed wireless access, fractionally-spaced-tapped-delay-line,
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Two Base Station Configuration Using an Adaptive Array at Elevated Locations for Microcell Systems Kentaro NISHIMORI Keizo CHO Yasushi TAKATORI Toshikazu HORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2000/08/25 Vol. E83-B No. 8 pp. 1688-1696 Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications) Category: Keyword: adaptive array, elevated base station, co-channel interference, microcell, element spacing,
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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 array, differential CMA, eigen-beamspace system, mobile communication, Marquardt method, steepest descent method,
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