IEICE Trans

Yasushi TAKATORI

Dynamic Terminal Connection Control Using Multi-Radio Unlicensed Access for 5G Evolution and Beyond Toshiro NAKAHIRA Tomoki MURAKAMI Hirantha ABEYSEKERA Koichi ISHIHARA Motoharu SASAKI Takatsune MORIYAMA Yasushi TAKATORI
Publication: Publication Date: 2021/09/01 Vol. E104-B No. 9 pp. 1138-1146 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G Evolution and Beyond) Category: Keyword: multi-radio, terminal connection control, WLAN, spatial reuse, centralized control,
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Extension of ITU-R Site-General Path Loss Model in Urban Areas Based on Measurements from 2 to 66GHz Bands Motoharu SASAKI Mitsuki NAKAMURA Nobuaki KUNO Wataru YAMADA Naoki KITA Takeshi ONIZAWA Yasushi TAKATORI Hiroyuki NAKAMURA Minoru INOMATA Koshiro KITAO Tetsuro IMAI
Publication: Publication Date: 2021/07/01 Vol. E104-B No. 7 pp. 849-857 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: 5G, propagation, path loss model, UMa, IMT-2020, Rep. ITU-R M.2412,
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An Actual Stadium Verification of WLAN Using a Distributed Smart Antenna System (D-SAS) Tomoki MURAKAMI Koichi ISHIHARA Hirantha ABEYSEKERA Yasushi TAKATORI
Publication: Publication Date: 2021/01/01 Vol. E104-B No. 1 pp. 109-117 Type of Manuscript: PAPER Category: Terrestrial Wireless Communication/Broadcasting Technologies Keyword: WLAN, IEEE 802.11ac, distributed antenna system (DAS), smart antenna system (SAS), antenna switching,
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Coordinated Scheduling of 802.11ax Wireless LAN Systems Using Hierarchical Clustering Kenichi KAWAMURA Akiyoshi INOKI Shouta NAKAYAMA Keisuke WAKAO Yasushi TAKATORI
Publication: Publication Date: 2021/01/01 Vol. E104-B No. 1 pp. 80-87 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: wireless LAN, IEEE 802.11ax, heterogeneous networks, coordinated control, uplink multi-user access, hierarchical clustering,
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Path Loss Model in Crowded Outdoor Environments Considering Multiple Human Body Shadowing of Multipath at 4.7GHz and 26.4GHz Mitsuki NAKAMURA Motoharu SASAKI Wataru YAMADA Naoki KITA Takeshi ONIZAWA Yasushi TAKATORI Masashi NAKATSUGAWA Minoru INOMATA Koshiro KITAO Tetsuro IMAI
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1676-1688 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: path loss model, human body shadowing, human blockage, crowded environment,
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Radio Propagation Prediction Method Using Point Cloud Data Based on Hybrid of Ray-Tracing and Effective Roughness Model in Urban Environments Minoru INOMATA Tetsuro IMAI Koshiro KITAO Yukihiko OKUMURA Motoharu SASAKI Yasushi TAKATORI
Publication: Publication Date: 2019/01/01 Vol. E102-B No. 1 pp. 51-62 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: 5G mobile communication system, high frequency bands, radio propagation prediction method, point cloud data,
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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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On the Feasibility of an Adaptive Movable Access Point System in a Static Indoor WLAN Environment Tomoki MURAKAMI Shingo OKA Yasushi TAKATORI Masato MIZOGUCHI Fumiaki MAEHARA
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1693-1700 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: wireless local area network (WLAN) system, adaptive movable access point (AMAP) system, traffic offload, k-means method, time of arrival (ToA), receive signal strength indicator (RSSI), signal to interference and noise ratio (SINR),
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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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Throughput Improvement of Mobile Cooperative WLAN Systems with Identifying and Management of Starved APs/UEs for 5G Akiyoshi INOKI Hirantha ABEYSEKERA Munehiro MATSUI Kenichi KAWAMURA Takeo ICHIKAWA Yasushi TAKATORI Masato MIZOGUCHI Akira KISHIDA Yoshifumi MORIHIRO Takahiro ASAI Yukihiko OKUMURA
Publication: Publication Date: 2017/08/01 Vol. E100-B No. 8 pp. 1366-1376 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System) Category: Terrestrial Wireless Communication/Broadcasting Technologies Keyword: 5G, wireless LAN, throughput starvation, CSMA/CA,
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User Equipment Centric Downlink Access in Unlicensed Spectrum for Heterogeneous Mobile Network Riichi KUDO B. A. Hirantha Sithira ABEYSEKERA Yusuke ASAI Takeo ICHIKAWA Yasushi TAKATORI Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/10/01 Vol. E98-B No. 10 pp. 1969-1977 Type of Manuscript: Special Section PAPER (Special Section on 5G Radio Access Networks―Part II: Multi-RAT Heterogeneous Networks and Smart Radio Technologies) Category: Keyword: heterogeneous network, CSMA/CA, unlicensed spectrum, wireless LAN, RXOP, hidden terminal problem,
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Weighted-Combining Calibration on Multiuser MIMO Systems with Implicit Feedback Hayato FUKUZONO Tomoki MURAKAMI Riichi KUDO Yasushi TAKATORI Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/04/01 Vol. E98-B No. 4 pp. 701-713 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiple-input multiple-output (MIMO), channel reciprocity, implicit feedback, calibration, minimum mean square error (MMSE),
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A Band-Divided Receiver Prototype for Wideband Optical Signals Munehiro MATSUI Riichi KUDO Yasushi TAKATORI Tadao NAKAGAWA Koichi ISHIHARA Masato MIZOGUCHI Takayuki KOBAYASHI Yutaka MIYAMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/07/01 Vol. E94-B No. 7 pp. 1801-1808 Type of Manuscript: Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network) Category: Keyword: coherent receiver, analog to digital converter, OFDM, real-time, heterodyne receiver,
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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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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 Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio Motohiro TANABE Masahiro UMEHIRA Koichi ISHIHARA Yasushi TAKATORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/12/01 Vol. E92-B No. 12 pp. 3589-3596 Type of Manuscript: Special Section PAPER (Special Section on Dynamic Spectrum Access) Category: Spectrum Allocation Keyword: dynamic spectrum access, channel access, overlap FFT, filter-bank,
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Frequency-Domain Equalization for Coherent Optical Single-Carrier Transmission Systems Koichi ISHIHARA Takayuki KOBAYASHI Riichi KUDO Yasushi TAKATORI Akihide SANO Yutaka MIYAMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/12/01 Vol. E92-B No. 12 pp. 3736-3743 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: frequency-domain equalization (FDE), coherent optical transmission, chromatic dispersion (CD), polarization mode dispersion (PMD), digital signal processing (DSP),
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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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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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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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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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