Kazuki Maruta, Ph.D.

News


2020/11/19

Jounal paper has been accepted on RISP Journal of Signal Processing.

    • K. Shimada, M. Takahashi, K. Maruta, C-J. Ahn, “Channel Ranking based Spreading Factor Optimization for Multiuser Visible Light Communication OFDM-IDMA with Parallel Interference Cancellation”


2020/10/28

Conference papers have been accepted on International Conference on Emerging Technologies for Communications (ICETC2020).

    • S. Kojima, K. Shima, K. Maruta, C-J. Ahn, “K-Factor Estimation based on Spectrogram Images by Convolutional Neural Network”

    • Y. Namie, S. Kojima, K. Maruta, O. Muta, C-J. Ahn, Convolutional Neural Network aided SNR Estimation Using IQ Constellation Images

    • Y. Goto, S. Kojima, K. Maruta, C-J. Ahn, A Preamble-less Symbol Timing Synchronization for OFDM Systems Using Convolutional Neural Networks

    • H. He, S. Kojima, K. Maruta, C-J. Ahn, GRNN based Channel Estimation using Scattered Pilot and RBF Interpolation

    • K. Mukai, K. Maruta, C-J. Ahn, Improving Low Complexity Inter-User Interference Cancellation for Massive MIMO Systems

    • K. Matsubara, K. Maruta, C-J. Ahn, Application of Higher-order Modulation for Semi-blind Interference Suppression on Multi-cell Massive MIMO Uplink

    • K. Ito, K. Matsubara, K. Shima, K. Maruta, C-J. Ahn, Precise Analytical Model of MRT Precoded Massive MIMO Downlink

    • N. Tanuma, K. Maruta, C-J. Ahn, Performance Improvement of Polar Codes with Successive Cancellation Decoding by Extended Block Length

    • S. Shibita, D. Hisano, K. Maruta, Y. Nakayama, K. Mishina, A. Maruta, Impact of Interference on Wavelength-Swapped WDM-PON System

    • K. Suzuoki, D. Hisano, K. Maruta, A. Maruta, Numerical Demonstration of Successive Interference Canceller for Uplink Power-Domain NOMA-based Coherent PON System


2020/10/17

Conference paper has been accepted on the 46th European Conference on Optical Communication (ECOC2020).

    • K. Suzuoki, D. Hisano, S. Shibita, K. Maruta, A. Maruta, "Experimental Demonstration of Lloyd-Max Algorithm to Quantization Noise Reduction on a Power–Domain Non-Orthogonal Multiple Access based Coherent PON"


Magazine paper has been accepted on IEEE Communications Magazine (IF:11.052).

  • Y. Nakayama, R. Yasunaga, K. Maruta, "Banket: Bandwidth Market for Building Sharing Economy in Mobile Networks"


2020/10/15

Conference paper has been accepted on the 39th IEEE International Conference on Consumer Electronics (ICCE 2021).

    • Y. Ida, K. Maruta, T. Matsumoto, S. Matsufuji, "CR-QRM-MLD for SD-SM-MIMO with Null Modulation"


2020/09/16

電子情報通信学会 通信ソサイエティ 活動功労賞 を受賞しました.


2020/09/15

Jounal paper has been accepted on IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences.

    • K. Shima, K. Maruta, C-J. Ahn, “Data-aided SMI Algorithm using Common Correlation Matrix for Adaptive Array Interference Suppression”


2020/09/03

Conference papers have been accepted on The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC2020).

    • H. Kobayashi, K. Maruta, T. Sugiyama, C-J. Ahn, “Computationally Efficient SLM based PAPR Reduction for STPA-BAA Scheme”

    • T. Hanada, K. Maruta, C-J. Ahn, “Improving DOA Estimation Accuracy by Rotating Planar Antenna Array”

    • S. Hirano, K. Shimada, S. Kojima, K. Maruta, C-J. Ahn, “Reducing FBI and MLI Using FSS Method for Adaptive Modulated VLC-OFDM System”

    • K. Arai, K. Maruta, C-J. Ahn, “High Beamforming Gain Precoding Weight Design Scheme with Null-Space Expansion for Multiuser Massive MIMO in Time-Varying Channels”

    • N. Funaki, K. Maruta, C-J. Ahn, “Improved Null-Space Expansion Scheme under Presence of Channel Estimation Error for Multiuser Massive MIMO”


2020/08/17

Conference paper has been accepted on IEEE Global Communications Conference (GLOBECOM2020) .

    • Y. Nakayama, K. Maruta, "Cell Zooming for Green Mobile Networks with Vehicle-Mounted Radio Units"


2020/08/03

RCS Technical Committee Recommended paper has been accepted on IEICE Transactions on Communications.

    • K. Maruta, C-J. Ahn, “Multi Modulus Signal Adaptation for Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems”


2020/07/17

Edited Special Issue reprint book has been published.

2020/07/10

Conference paper has been accepted on 25th Optoelectronics and Communications Conference (OECC 2020) .

    • K. Suzuoki, D. Hisano, S. Shibita, K. Maruta, A. Maruta, “Influence of Quantization Noise on Power Domain Non-Orthogonal Multiple Access Based PON”


2020/07/01

Journal paper has been accepted on IEEE Internet of Things Journal (IF: 9.936).

    • Y. Nakayama, K. Maruta, “Age of Information based Host Selection for Mobile User Provided Networks”


2020/06/25

Conference paper has been accepted on OSA Advanced Photonics Congress.

    • D. Hisano, S. Shibita, K. Mishina, Y. Nakayama, K. Maruta, A. Maruta, “Wavelength Swapping Scheme to Eliminate Reflected Light in Bidirectional WDM-PON”


2020/06/03

Received IEICE Communications Express (ComEX) Top Downloaded Letter Award.

    • K. Senoo, T. Akao, K. Maruta, T. Sugiyama, C-J. Ahn, “Operational Range Increasement for STPA-BAA Spectrum Superposing Using Subcarrier Modulation Adaptation,” IEICE Communications Express, Vol. 9, Issue 1, p. 13-18, January 2020.”


2020/04/01

Research grant proposal was accepted by JSPS Grants-in-Aid for Scientific Research (KAKEN) B (Co-Investigator)

    • 日本学術振興会 科学研究費助成事業 基盤研究(B) (分担,代表:吉本直人) に採択されました.


2020/04/01

東京工業大学 超スマート社会卓越教育院(特任准教授)に着任しました.


2020/03/05

電子情報通信学会トップページのバナーに,3月の推奨論文として紹介されました.

    • K. Senoo, T. Akao, K. Maruta, T. Sugiyama, C-J. Ahn, “Operational Range Increasement for STPA-BAA Spectrum Superposing Using Subcarrier Modulation Adaptation,” IEICE Communications Express, Vol. 9, Issue 1, p. 13-18, January 2020.”


2020/03/02

Journal paper (letter) has been accepted on IEICE Communications Express.

    • K. Goto, K. Maruta, C-J. Ahn, “Compressed Sensing based Low Complexity 2D-DOA Estimation by Separation and Pair-Mathcing Approach”


2020/02/29

Conference paper has been accepted on The 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring).

    • K. Maruta, S. Kojima, C-J. Ahn, D. Hisano, Y. Nakayama, “Blind SIR Estimation by Convolutional Neural Network Using Visualized IQ Constellation”


2020/02/26

Editorial for Electronics Special Issue 'Massive MIMO Systems' has been published.

    • K. Maruta, F. Falcone, “Massive MIMO Systems: Present and Future”


2020/02/22

Conference paper has been accepted on The 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring).

    • Y. Nakayama, Y. Hara-Azumi, A.H.N. Nguyen, D. Hisano, T. Nishio, K. Maruta, “Real-Time Routing for Wireless Relay Fronthaul with Vehicle-Mounted Radio Units”


2020/02/13

エンジニアHubにて、TCPに関するweb記事が公開されました.


2020/01/29

Summary of our research project (IEEE Access paper below) has been posted on IEEE Spectrum’s technology blog.


2020/01/15

Journal paper has been accepted on IEEE Access (IF: 4.098).

    • Y. Nakayama, T. Nishio, D. Hisano, K. Maruta, “Small Cells Enabled by Crowdsourced Radio Units Mounted on Parked Vehicles for Smart City”


2020/01/11

Conference paper has been accepted on The 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring).

    • S. Kojima, K. Maruta, C-J. Ahn, “High-precision SNR Estimation by CNN using PSD Image for Adaptive Modulation and Coding”


2020/01/10

Journal paper has been accepted on Journal of Communications Software and Systems.

    • K. Maruta, “Frequency Domain Backoff for Continuous Beamforming Space Division Multiple Access on Massive MIMO Wireless Backhaul Systems”


2020/01/07

Journal paper (letter) has been accepted on ICT Express.

    • K. Yonei, K. Maruta, C-J. Ahn, “Frame Splitting and Data-aided Decision Direct Channel Estimation for OFDM in Fast Varying Fading Channels”


2019/12/28

Magazine paper has been accepted on IEEE Network (IF: 7.503).

    • Y. Nakayama, D. Hisano, K. Maruta, "Adaptive C-RAN Architecture with Moving Nodes Towards Beyond 5G Era"


2019/11/21

Research grant proposal was accepted by Artificial Intelligence Research Promotion Foundation.


2019/11/07

Received APCC2019 Best Paper Award.

    • K. Shimada, M. Takahashi, K. Maruta, C-J. Ahn, “Channel Ranking based Spread Code Optimization for Visible Light Communication OFDM-IDMA Systems"


2019/10/24

Journal paper (letter) has been accepted on IEICE Communications Express.

    • K. Senoo, T. Akao, K. Maruta, T. Sugiyama, C-J. Ahn, “Operational Range Increasement for STPA-BAA Spectrum Superposing Using Subcarrier Modulation Adaptation”


2019/10/05

Journal paper has been accepted on IEEE Access (IF: 4.098).

    • S. Kojima, K. Maruta, C-J. Ahn, “Adaptive Modulation and Coding using Neural Network based SNR Estimation,”


2019/09/24

Conference papers have been accepted on IEEE Consumer Communications & Networking Conference.

    • D. Hisano, K. Maruta, Y. Nakayama, “Low Cost C-RAN and Fronthaul Design with WDM-PON and Multi-hopping Wireless Link,”

    • Y. Nakayama, D. Hisano, T. Tsutsumi, K. Maruta, “Novel C-RAN Architecture with PON based Midhaul and Wireless Relay Fronthaul,”


2019/09/01

Conference papers have been accepted on The 25th Asia-Pacific Conference on Communications (APCC).

    • K. Ito, K. Maruta, C-J. Ahn, “Outage Probability Analysis of MF Precoded Massive MIMO with Multi-antenna User Environment,”

    • K. Shima, K. Senoo, K. Goto, K. Maruta, C-J. Ahn, “Data-aided SMI Algorithm using Common Correlation Matrix for Adaptive Array Interference Suppression,”

    • K. Matsubara, S. Kuroki, K. Maruta, C-J. Ahn, “Modified HTRCI with Time-domain CSI Separation for Pilot De-contamination,”

    • K. Motosugi, K. Yonei, K. Maruta, C-J. Ahn, “Fast Fading Compensation by Frame Spliting and Decision Directed Channel Extrapolation for OFDM,”

    • K. Shimada, M. Takahashi, K. Maruta, C-J. Ahn, “Channel Ranking based Spread Code Optimization for Visible Light Communication OFDM-IDMA Systems,”

    • N. Tanuma, R. Marumo, K. Maruta, C-J. Ahn, “Known Bits Puncturing for Systematic Polar Codes,”


2019/08/21

Conference papers have been accepted on the 2019 International Conference on Advanced Technologies for Communications (ATC).

    • S. Kuroki, K. Matsubara, K. Maruta, C-J. Ahn, “Modified HTRCI with Variable Pulse Generation for Pilot De-contamination,”

    • T. Omura, N. Hoeur, K. Maruta, C-J. Ahn, “Improving ANN based Channel Identification and Compensation using GRNN Method under Fast Fading Environment,”

    • M. Takahashi, K. Shimada, K. Maruta, C-J. Ahn, “Throughput Improvement Using Code Length Optimization for VLC-OFDM/IDMA,”

    • R. Marumo, N. Tanuma, K. Maruta, C-J. Ahn, “Throughput Improvement of Systematic Polar Coded MIMO-OFDM by Puncturing,”


2019/07/24

Conference papers have been accepted on IEEE 90th Vehicular Technology Conference (VTC-Fall).

    • K. Maruta, C-J. Ahn, “Enhanced Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems for Multi Modulus Signals,”

    • Y. Nakayama, K. Maruta, “Adaptive C-RAN Architecture for Smart City with Crowdsourced Radio Units Mounted on Parked Vehicles,”

    • Y. Nakayama, D. Hisano, T. Nishio, K. Maruta, “Experimental Results on Crowdsourced Radio Units Mounted on Parked Vehicles,”

2019/07/02

Journal paper (letter) has been accepted on IEICE Communications Express.

    • T. Omura, S. Kojima, K. Maruta, C-J. Ahn, “Neural Network based Channel Identification and Compensation,”


2019/07/01

著書を出版します.


2019/05/17

Journal paper has been accepted on IET Microwaves, Antennas & Propagation (IF: 2.036 ).

    • K. Maruta, C-J. Ahn, “Stabilized Blind Interference Suppression of Constant Modulus-based Adaptive Array over Rayleigh Fading Channels by Initial Antenna Selection,”


2019/04/30

6月5日,大阪大学 数理・データ科学セミナー 数理モデルセミナーシリーズ にて講演します.

    • “無線信号の統計量に基づくブラインド型アダプティブアレー干渉抑圧”


2019/03/19

Journal paper (letter) has been accepted on ICT Express.

    • K. Watanabe, S. Kojima, T. Akao, M. Katsuno, K. Maruta, C-J. Ahn, “Modified Pilot Selection for Channel Estimation of Systematic Polar Coded MIMO-OFDM,”


2019/03/18

Journal paper has been accepted on Journal of Signal Processing.

    • S. Kojima, K. Maruta, C-J. Ahn, “Joint Adaptive Modulation and Transmit Power Control on Frequency Symbol Spreading OFDM Mobile Relay System,”


2019/03/03

Journal paper (letter) has been accepted on ICT Express.

    • T. Akao, K. Watanabe, S. Kojima, M. Katsuno, K. Maruta, C-J. Ahn, “Reducing Channel Spatial Correlation by Rotating Planar Antenna Array,”


2019/02/18

発表予定です.

■2019年3月19日@2019年電子情報通信学会総合大会

      • 丸田一輝, 安昌俊, “マルチセルMassive MIMOにおけるセミブラインドMMA及びMMSE-SMIによる多値信号適用時の動作改善,”

■2019年3月14日@情報処理学会全国大会

      • 丸田一輝, 中山悠, 田中健, 安永遼真, 菅宣理, 本田一暁, 久野大介, 安昌俊, “ビークルセルネットワークの無線フロントホールにおけるビーム追従法,”

■2019年3月6日@電子情報通信学会RCS研究会

      • 丸田一輝, 西森健太郎, 中山悠, 安昌俊, “時間領域シンボル拡散を用いたブラインド型アダプティブアレー ”

■2019年2月28日@革新的無線通信技術に関する横断型研究会(MIKA)技術交流会

      • 丸田一輝, 小島駿, 中山悠, 久野大介, 安昌俊, “無線信号の可視化情報を用いた機械学習による干渉推定 ”


2019/02/10

Conference paper has been accepted on International ITG Workshop on Smart Antennas (WSA).

    • K. Nishimori, K. Maruta, T. Hiraguri, "Blind Adaptive Array by Constant Modulus with Variable Step Size for Multi-beam Massive MIMO",


2019/02/04

Conference paper has been accepted on IEEE International Conference on Communications (ICC).

    • Y. Nakayama, D. Hisano, R. Yasunaga, K. Maruta, "Adaptive Network Architecture with Moving Nodes Towards Beyond 5G Era",


2019/01/28

Journal paper has been accepted on IEICE Transactions on Communications, Special Section Technology Trials and Proof-of-Concept Activities for 5G and Beyond”.

    • K. Maruta, C-J. Ahn, “Improving Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems: A Beamspace Approach,”


2018/12/22

Conference paper has been accepted on PerCom 2019 Work In Progress (WiP) Session.

    • Y. Nakayama, K. Honda, D. Hisano, K. Maruta, “Adaptive C-RAN Architecture for Smart City using Crowdsourced Radio Units,”


2018/11/17

Journal paper has been accepted on Journal of Communications Software and Systems .

    • S. Kojima, K. Maruta, C-J. Ahn, “Throughput Maximization by Adaptive Switching with Modulation Coding Scheme and Frequency Symbol Spreading,”


2018/09/25

Adopted for the Mazda Foundation research grant.


2018/09/14

Conference papers have been accepted on 2018 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2018).

    • T. Akao, K. Watanabe, S. Kojima, M. Katsuno, K. Maruta, C-J. Ahn, “Reducing Channel Spatial Correlation by Rotating Planar Antenna Array,”

    • K. Watanabe, S. Kojima, T. Akao, M. Katsuno, K. Maruta, C-J. Ahn, “Modified Pilot Selection for Systematic Polar Coded MIMO-OFDM Channel Estimation,”


2018/09/13

Journal paper has been accepted on IEIE Transactions on Smart Processing and Computing.

    • K. Tezuka, S. Taroda, S. Higuchi, K. Maruta, C-J. Ahn, “Variable Channel Threshold-Based Hybrid AF-DF Cooperative Communications with Packet Splitting,”


2018/08/28

Journal paper has been accepted on Big Data and Cognitive Computing.


2018/08/18

Journal paper has been accepted on Entropy.


2018/08/02

International conference papers have been accepted on The 18th International Symposium on Communications and Information Technologies (ISCIT 2018)

    • K. Maruta, K. Nishimori, C-J. Ahn, “Constant Modulus and Kurtosis based Blind Adaptive Array Interference Suppression: Comparisons and New Approach,”

    • T. Omura, S. Kojima, K. Maruta, C-J. Ahn, “Neural Network based Channel Identification and Compensation,”

    • K. Senoo, T. Akao, K. Maruta, C-J. Ahn, “Improvement and Expansion of Operational Range for STPA-BAA Spectrum Superposing Scheme Using Subcarrier Adaptive Modulation,”

    • K. Yonei, K. Watanabe, K. Maruta, C-J. Ahn, “Iterative Channel Estimation with Polar Codes for Short Block Transmission,”

    • K. Goto, T. Akao, K. Maruta, C-J. Ahn, “Reduced Complexity Direction-of-Arrival Estimation for 2D Planar Massive Arrays: A Separation Approach,”


2018/7/30

Journal paper has been accepted on IEEE Transactions on Communications.


2018/7/28

International conference papers have been accepted on International Conference on Software, Telecommunications and Computer Networks (SoftCOM 2018).

    • S. Kojima, T. Akao, K. Watanabe, M. Katsuno, K. Maruta, C-J. Ahn, “Adaptive Switching Method with AMC and FSS,”


2018/7/23

International conference papers have been accepted on 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC).

    • K. Honda, R. Yasunaga, Y. Nakayama, K. Maruta, T. Tsutsumi, “Dynamic Mobile Network Architecture Organized by Drivers Decision Making,”

    • K. Maruta, Y. Nakayama, K. Honda, D. Hisano, C-J. Ahn, “V2P Connectivity on Higher Frequency Band and CoMP Based Coverage Expansion,”


2018/7/15

International conference paper has been accepted on 2018 IEEE Global Telecommunications Conference (GLOBECOM).

    • D. Hisano, Y. Nakayama, K. Maruta, A. Maruta, “Deployment Design of Functional Split Base Station in Fixed and Wireless Multihop Fronthaul,”


2018/6/28

International conference paper has been accepted on 2018 IEEE International Workshop on Electromagnetics:Applications and Student Innovation Competition (iWEM).

    • S. Ogawa, K. Nishimori, R. Taniguchi, K. Maruta, T. Hiraguri, “Multi-beam Massive MIMO Using Robust ICA,”


2018/6/4

Journal paper has been accepted on IEEE Access.

    • Y. Nakayama, K. Maruta, T. Tsutsumi, K. Sezaki, “Optically Backhauled Moving Network for Local Trains: Architecture and Scheduling,“ IEEE Access.


2018/5/14

International conference papers have been accepted on ICCE 2018.

    • S. Taroda, C-J. Ahn, K. Maruta, “Transmit Power Imbalance Reduction Method and Nonlinear Companding Transform for Beamforming OFDM Systems,”

    • S. Higuchi, C-J. Ahn, K. Maruta, “Efficient Channel Column Sorting Method Based on Householder Transformation for QRM-MLD,”