IEICE Trans

Kazuki MARUTA

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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Pilot De-Contamination by Modified HTRCI with Time-Domain CSI Separation for Two-Cell MIMO Downlink Kakeru MATSUBARA Shun KUROKI Koki ITO Kazushi SHIMADA Kazuki MARUTA Chang-Jun AHN
Publication: Publication Date: 2021/09/01 Vol. E104-A No. 9 pp. 1345-1348 Type of Manuscript: LETTER Category: Digital Signal Processing Keyword: channel estimation, pilot contamination, HTRCI,
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Data-Aided SMI Algorithm Using Common Correlation Matrix for Adaptive Array Interference Suppression Kosuke SHIMA Kazuki MARUTA Chang-Jun AHN
Publication: Publication Date: 2021/02/01 Vol. E104-A No. 2 pp. 404-411 Type of Manuscript: Special Section PAPER (Special Section on Signal Design and Its Applications in Communications) Category: Digital Signal Processing Keyword: adaptive array, channel estimation, sample matrix invesion, decision feedback,
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Multi Modulus Signal Adaptation for Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems Kazuki MARUTA Chang-Jun AHN
Publication: Publication Date: 2021/02/01 Vol. E104-B No. 2 pp. 158-168 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: massive MIMO, multicell, pilot contamination, multi modulus algorithm, channel estimation, decision feedback, beamspace, minimum mean square error,
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Improving Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems: A Beamspace Approach Kazuki MARUTA Chang-Jun AHN
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1503-1511 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond) Category: Keyword: massive MIMO, multicell, pilot contamination, adaptive array, constant modulus algorithm, channel estimation, decision feedback, beamspace,
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Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement Tatsuhiko IWAKUNI Kazuki MARUTA Atsushi OHTA Yushi SHIRATO Masataka IIZUKA
Publication: Publication Date: 2018/03/01 Vol. E101-B No. 3 pp. 877-884 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: massive MIMO, multiuser MIMO, null-space expansion, channel time variation, inter-user interference,
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Experimental Investigation of Space Division Multiplexing on Massive Antenna Systems for Wireless Entrance Kazuki MARUTA Atsushi OHTA Satoshi KUROSAKI Takuto ARAI Masataka IIZUKA
Publication: Publication Date: 2017/08/01 Vol. E100-B No. 8 pp. 1436-1448 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: massive MIMO, multiuser MIMO, channel measurement, line-of-sight propagation, inter-user interference cancellation, spatial correlation,
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Null-Space Expansion for Multiuser Massive MIMO Inter-User Interference Suppression in Time Varying Channels Tatsuhiko IWAKUNI Kazuki MARUTA Atsushi OHTA Yushi SHIRATO Takuto ARAI Masataka IIZUKA
Publication: Publication Date: 2017/05/01 Vol. E100-B No. 5 pp. 865-873 Type of Manuscript: PAPER Category: Terrestrial Wireless Communication/Broadcasting Technologies Keyword: inter-user interference, channel time variation, multiuser MIMO, massive MIMO, null-space expansion,
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Massive Antenna Systems for Wireless Entrance (MAS-WE): Practical Application of Massive MIMO with Simplified Space Division Multiplexing Schemes Kazuki MARUTA Atsushi OHTA Satoshi KUROSAKI Takuto ARAI Masataka IIZUKA
Publication: Publication Date: 2017/05/01 Vol. E100-B No. 5 pp. 779-787 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: Massive MIMO, Multiuser MIMO, inter-user interference cancellation, scheduling, spatial channel correlation, sectorization,
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Antenna Array Arrangement for Massive MIMO to Reduce Channel Spatial Correlation in LOS Environment Takuto ARAI Atsushi OHTA Yushi SHIRATO Satoshi KUROSAKI Kazuki MARUTA Tatsuhiko IWAKUNI Masataka IIZUKA
Publication: Publication Date: 2017/04/01 Vol. E100-B No. 4 pp. 594-601 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: massive MIMO, multi-user MIMO, antenna arrangement, line of sight, spatial correlation,
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Blind Interference Suppression Scheme by Eigenvector Beamspace CMA Adaptive Array with Subcarrier Transmission Power Assignment for Spectrum Superposing Kazuki MARUTA Jun MASHINO Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/06/01 Vol. E98-B No. 6 pp. 1050-1057 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: adaptive array, Subcarrier Transmission Power Assignment (STPA), blind algorithm, Eigenvector Beamspace Adaptive Array (EBAA), Constant Modulus Algorithm (CMA), spectrum superposing,
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Spectral Efficiency Improvement of Fractional Frequency Reuse by Inter-Cell Interference Cancellation on Cooperative Base Station Kazuki MARUTA Atsushi OHTA Masataka IIZUKA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/06/01 Vol. E95-B No. 6 pp. 2164-2168 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: inter-cell interference cancellation, base station cooperation, fractional frequency reuse,
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Data Transmission Using Original Coils in Resonant Wireless Power Transmission Takashi MARUYAMA Tatsuya SHIMIZU Mamoru AKIMOTO Kazuki MARUTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/11/01 Vol. E94-B No. 11 pp. 3172-3174 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: resonant wireless power transmission, data transmission, load modulation, equivalent circuit,
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