News

2025/04/24

Conference papers have been accepted on IEEE Vehicular Technology Conference (VTC2025-Spring) Workshops.

• • Y. Sasaki, S. Berra, S. Chakraborty, J. Nakazato, R. Dinis, K. Maruta, “Newmann Series-based Precoding Weight Design for Multi-User Massive MIMO Null-Space Expansion” 

  • S. Ozawa, Y. Sasaki, J. Nakazato, K. Maruta, “Optimized Broad-Range Null-Steering Incorporated with O-RAN-Based Beam Tracking for Millimeter-Wave V2X” 

  • S. Inokuma, G. Sawada, H. Ikeda, D. Hisano, K. Maruta, “Image Value-Based Spatial Stream Allocation in MIMO Deep Joint Source-Channel Coding for Extreme Environment”

  • G. Sawada, S. Inokuma, D. Hisano, K. Maruta, “Impact of Time-Varying Channels on MIMO DeepJSCC”

  • G. Sawada, S. Inokuma, D. Hisano, K. Maruta, “Optimization of Compression Rate Allocation for Image Segmentation Regions in MIMO DeepJSCC”

  • Y. Tsunoda, T. Suzuki, Y. Sasaki, K. Maruta, “Iterative Interference Replica Subtraction Based Low-Complexity Precoding for Multiuser Massive MIMO Null-Space Expansion” 

  • H. So, K. Maruta, Y. Nakayama, “Throughput Evaluation in Actual User Distribution for Adaptive C-RAN with Crowdsourced Radio Unit”

2025/03/21

Conference paper has been accepted on IEEE Vehicular Technology Conference (VTC2025-Spring).

• • T. Kazama, H. Ikeda, H. So, K. Maruta, “Blind Adaptive Array Interference Suppression in LTE-WLAN Coexistence Environment”.

2025/02/28

日本学術振興会 科学研究費助成事業に採択されました．

• • 基盤研究(B)（代表），“伝搬路時変動に耐性のあるMassive MIMOヌル空間拡張の基礎確立と応用展開” 

2025/01/30

Journal paper has been accepted on IEEE Transactions on Vehicular Technology (IF: 6.1). 

• • Y. Sasaki, K. Arai, J. Nakazato, K. Maruta, “Receiver Maximum Eigenmode Beamforming-Based Null-Space Expansion for Multi-user Massive MIMO in Time-Varying Channel” 

2025/01/21

Conference paper has been accepted on IEEE International Symposium on Circuits & Systems (ISCAS 2025).

• • Y. Furukawa, K. Takikawa, D. Hisano, Y. Nakayama, K. Maruta, “Deep Learning Based Equalization for CSK Optical Camera Communication”

2024/12/24

Conference papers have been accepted on 2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'25). 

• • M. Muroi, S. Okita, T. Matsuda, T. Kimura, T. Hiraguri, K. Maruta, “Out-of-Band Leakage Evaluation of Packet-Based WPT”

  • S. Okita, Y. Sasaki, T. Matsuda, T. Kimura, T. Hiraguri, K. Maruta, “Coexistence of Wireless Power and Information Transfer by Broad-Range Null-Steering” 

2024/12/5

Journal paper has been accepted on IEEE Open Journal of Vehicular Technology (IF: 5.3). 

• • S. Berra, A. Benchabane, S. Chakraborty, K. Maruta, R. Dinis, M. Beko, “A Low Complexity Linear Precoding Method for Extremely Large-Scale MIMO Systems” 

2024/11/8

Conference papers have been accepted on ACM Intelligent Computing and its Emerging Applications (ICEA 2024). 

• • A. Yue, K. Maruta, “Performance Analysis of Collaborative Uplink MIMO Transmission Considering Signaling Overhead”

  • T. Takahashi, J. Nakazato, K. Maruta, S.B. Cha, A. Nathan, “Design of an Orchestrator for Network-Controlled Repeaters” 

  • T. Miyaoka, Y. Sasaki, J. Nakazato, K. Maruta, S.B. Cha, A. Nathan, “Design of Network-Controlled Repeter Deployment toward mmWave Coverage Enhancement” 

  • J. Nakazato, S. Ozawa, Y. Sasaki, K. Maruta, K. Suzuki, T. Iye, Y. Susukida, E. Sato, M. Tsukada, “Toward 6G Mobility Networks: A Proposal for Cell-Free Cooperative Distributed Beamforming” 

2024/10/21

Conference papers have been accepted on IEEE Consumer Communications & Networking Conference (CCNC 2025) Poster track. 

• • S. Ozawa, Y. Sasaki, J. Nakazato, K. Maruta, “Broad-Range Null-Steering Incorporated with Beam Tracking for Millimeter-Wave V2X” 

  • H. Ikeda, Y. Oami, S. Nonaka, D. Hisano, K. Maruta, “Suppression of Multipath Delay Exceeding CP Length Using MMSE Adaptive Array for Underwater Acoustic Communication” 

  • J. Nakazato, T. Iye, Y. Susukida, E. Sato, Y. Sasaki, K. Maruta, M. Tsukada, “Toward 6G Mobility Network: Design of a Wireless Digital Twin for Connected Autonomous Vehicle” 

2024/10/16

Journal paper has been accepted on IEEE Access (IF: 3.4). 

• • Z. Li, R. Nojima, O. Muta, M. Omoto, K. Maruta, “In-band Distortion Compensation for Peak Cancellation Based PAPR Reduction in Massive MIMO-OFDM with Uniform Planar Array” 

2024/09/18

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

• • Y. Sasaki, K. Arai, K. Maruta, “QRD-based Precoding Design for Multiuser Massive MIMO Null-Space Expansion” 

2024/08/03

Journal paper has been accepted on IEEE Access (IF: 3.4). 

• • Y. Sawada, S. Shiraki, T. Matsuda, T. Hiraguri, K. Maruta, T. Kimura, “Time Division Wireless Power Transfer Using Receiver Grouping” 

2024/07/30

Journal paper has been accepted on IEICE Transactions on Communications. 

• • Y. Ida, K. Maruta, Y. Ohira, S. Kuroda, T. Matsumoto, “Combination of Phase Rotation SM-OOK and Rectangular, Cross, Octagonal SD-8QAMs for MIMO Systems” 

2024/07/09

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

• • R. Yamamoto, K. Matsumoto, Y. Inoue, Y. Hara, K. Maruta, Y. Nakayama, D. Hisano, “Impact of Training Models on Deep Joint Source-Channel Coding Applicable to 5G systems” 

2024/06/26

Following papers received awards. 

[IEEE VTS Tokyo/Japan Chapter 2024 Young Researcher's Encouragement Award]

• • S. Ozawa, Y. Sasaki, J. Nakazato, M. Tsukada, K. Maruta, “Toward O-RAN-based Cell-Free Architecture: Cooperative O-RU/V2X mmWave Beam Tracking”.

  • S. Inokuma, Y. Sasaki, D. Hisano, Y. Nakayama, K. Maruta, “Performance Evaluation of MIMO Transmission in Deep Joint Source-Channel Coding”. 

[ICUFN 2024 Best Paper Award] 

• • R. Iwaki, J. Nakazato, K. Maruta, M. Tsukada, H. Ochiai, H. Esaki, “Enhancing V2X Communication: Machine Learning Assisted Dynamic mmWave Beam Search”. 

[IEEE INFOCOM 2024 NG-OPERA Best Paper Award]

• • K. Suzuki, J. Nakazato, Y. Sasaki, K. Maruta, M. Tsukada, H. Esaki, “Toward B5G/6G Connected Autonomous Vehicles: O-RAN-Driven Millimeter-Wave Beam Management and Handover Management”. 

2024/06/03

Conference paper has been accepted on The 19th Asia Pacific International Conference on Information Science and Technology (APIC-IST 2024).

• • H. Ueno, J. Cha, H. Nakano, K. Seimiya, K. Maruta, C-J. Ahn, “Improving Semi-Blind Interference Suppression by using Time-Domain Inter-Symbol Spreading on M-MIMO Systems”. 

2024/04/26

Conference paper has been accepted on The 15th International Conference on Ubiquitous and Future Networks (ICUFN 2024).

• • R. Iwaki, J. Nakazato, K. Maruta, M. Tsukada, H. Ochiai, H. Esaki, “Enhancing V2X Communication: Machine Learning Assisted Dynamic mmWave Beam Search”. 

2024/03/19

Conference papers have been accepted on IEEE Vehicular Technology Conference (VTC2024-Spring) Technologies and Proof-of-Concept Activities for 6G 2024 (TPoC6G 2024) Workshop.

• • S. Ozawa, Y. Sasaki, J. Nakazato, M. Tsukada, K. Maruta, “Toward O-RAN-based Cell-Free Architecture: Cooperative O-RU/V2X mmWave Beam Tracking”.

  • S. Inokuma, Y. Sasaki, D. Hisano, Y. Nakayama, K. Maruta, “Performance Evaluation of MIMO Transmission in Deep Joint Source-Channel Coding”.

2024/03/14

Conference paper has been accepted on IEEE International Conference on Communications (ICC 2024) The 2nd International Workshop on Intelligent Cloud Continuum for B5G Service (CloudB5G).

• • Y. Sasaki, K. Arai, J. Nakazato, K. Maruta, “Time-Series-Aware User Scheduling for Multi-user Massive MIMO Null-Space Expansion”

2024/02/24

Conference paper has been accepted on IEEE International Conference on Computer Communications (INFOCOM 2024) Workshop: Next-generation Open and Programmable Radio Access Networks (NG-OPERA 2024).

• • K. Suzuki, J. Nakazato, Y. Sasaki, K. Maruta, M. Tsukada, H. Esaki, “Toward B5G/6G Connected Autonomous Vehicles: O-RAN-Driven Millimeter-Wave Beam Management and Handover Management”

2024/02/20

Following paper received Excellent Paper Award at International Conference on AI in information and communication (ICAIIC 2024). 

• • • K. Maruta, J. Nakazato, K. Suzuki, H.Dou, R. Iwaki, S. Ozawa, Y. Sasaki, H. So, M. Tsukada, “Millimeter-Wave Fast Beam Tracking Enabled by RAN/V2X Cooperation” 

2024/01/30

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

• • S. Ozawa, T. Ikuta, Y. Sasaki, R. Iwaki, J. Nakazato, M. Tsukada, H. So, K. Maruta, “Location-Aided Fast Beam Tracking Algorithm for Millimeter-Wave V2I” 

2024/01/29

Conference papers have been accepted on ASPIRE Workshop 2024.

• • K. Maruta, S. Kojima, “Blind Array Algorithm Adaptation by CNN-assisted SIR Estimation using IQ Constellation”

  • Y. Sasaki, S. Ozawa, K. Arai, J. Nakazato, M. Tsukada, K. Maruta, “Beam-Space Expansion with Broad-Range Null-Steering for V2I Multiuser MIMO Transmission” 

  • S. Ozawa, Y. Sasaki, R. Iwaki, J. Nakazato, M. Tsukada, K. Maruta, “Laboratory Experiment of Broad-Range Null-Steering for Millimeter-Wave V2I Multiuser MIMO” 

  • D. Hu, J. Nakazato, E. Javanmardi, M. Asad, K. Maruta, M. Tsukada, “A Research of Kalman Filter enabled Beam Tracking for Multiple Vehicles”

2024/01/20

Journal paper has been accepted on  MDPI Drones.  

• • H. Kakeru, T. Hiraguri, T. Kimura, T. Matsuda, T. Imai, J. Hirokawa, K. Maruta, S. Ujigawa, “Study on Drone Handover Methods Suitable for Multipath Interference Due to Obstacles” Drones, vol. 8, no. 2: 32, January 2024. 

2024/01/16

Conference paper has been accepted on IEEE International Symposium on Circuits & Systems (ISCAS 2024).

• • Y. Furukawa, Y. Sasaki, D. Hisano, Y. Nakayama, K. Maruta, “Selective Diversity Reception in Underwater Optical Camera Communication”

2023/12/26

Conference papers have been accepted on International Conference on AI in information and communication (ICAIIC 2024).

• • K. Maruta, J. Nakazato, K. Suzuki, H.Dou, R. Iwaki, S. Ozawa, Y. Sasaki, H. So, M. Tsukada, “Millimeter-Wave Fast Beam Tracking Enabled by RAN/V2X Cooperation” 

  • H. So, K. Maruta, T. Kaho, “Concept of Joint Fast Beam Search and Synchronization Scheme using Fast Beam Steering” 

2023/11/23

Conference papers have been accepted on IEEE Consumer Communications & Networking Conference (CCNC2024).

• • Y. Sasaki, S. Ozawa, K. Arai, J. Nakazato, M. Tsukada, K. Maruta, “Location-Based Broad-Range Null-Steering in V2X Multiuser MIMO Transmission” 

  • R. Iwaki, J. Nakazato, A. Muhammad, E. Javanmardi, K. Maruta, M. Tsukada, H. Ochiai, H. Esaki, “Optimizing mmWave Beamforming for High-Speed Connected Autonomous Vehicles: An Adaptive Approach” 

2023/09/07

Conference paper has been accepted on 2023 28th IEEE Asia-Pacific Conference on Communications (APCC).

• • Y. Sawada, S. Shiraki, T. Matsuda, T. Hiraguri, K. Maruta, T. Kimura, “TDM Scheduling Based on Receiver Grouping for Indoor Wireless Power Transfer,” 

2023/09/01

Conference paper has been accepted on IEEE 98th Vehicular Technology Conference (VTC2023-Fall).

• • K. Matsumoto, Y. Inoue, Y. Hara-Azumi, K. Maruta, Y. Nakayama, Y. Shinohara, H. Ikeda, D. Hisano, “Implementation of Deep Joint Source-Channel Coding on 5G Systems for Image Transmission” 

2023/08/28

Journal paper has been accepted on  IEEE Access (IF: 3.9).  

• • T. Hiraguri, H. Shimizu, T. Kimura, T. Matsuda, K. Maruta, Y. Takemura, T. Ohya, T. Takanashi, “Autonomous Drone-Based Pollination System using AI Classifier to Replace Bees for Greenhouse Tomato Cultivation”

2023/08/25

Conference papers have been accepted on 2023 International Conference On Advanced Technologies For Communications (ATC 2023).

• • H. Ueno, K. Tamura, H. Nakano, R. Takemoto, K. Maruta, C-J. Ahn, “Adaptive Modulation and Coding for Uplink Massive MIMO with Semi-Blind Interference Suppression Under Multicell Environment” 

  • T. Ikuta, K. Maruta, D. Hisano, Y. Nakayama, “Imaging Parameter Optimization for Nonlinear Crosstalk Cancellation in Optical Camera Communication”

  • H. Ikeda, K. Maruta, D. Hisano, Y. Nakayama, “Interference Suppression Performance of CMA Using Time-Domain Inter-Symbol Spreading in Time-Varying Channel Environment”

  • Y. Sasaki, K. Maruta, “Receiver Maximum Eigenmode Beamforming-Based Null-Space Expansion for Multiuser Massive MIMO” 

  • T. Suzuki, K. Maruta, S. Berra, O. Muta, “Multiuser Scheduling to Improve Iterative Interference Replica Subtraction with Partial Zeroization for Massive MIMO Systems” 

2023/07/30

Journal paper has been accepted on  IEEE Access (IF: 3.9).  

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

2023/07/25

Conference papers have been accepted on 2023 IEEE 12th Global Conference on Consumer Electronics (GCCE 2023).

• • H. Matsushita, Y. Ida, K. Maruta, Y. Ohira, S. Kuroda, T. Matsumoto, “2D Mesh Image Subcarrier Assignment for MUDiv/OFDMA With Convolutional Neural Networks” 

  • R. Yoshimura, Y. Ida, K. Maruta, Y. Ohira, S. Kuroda, T. Matsumoto, “Deep Neural Networks Based on QRM-MLD for SD-SM-MIMO” 

2023/06/13

Journal paper has been accepted on IEEE Transactions on Communications. (IF: 8.3). 

• • Y. Inoue, Y. Nakayama, K. Maruta, “Reliable Wireless Networking in Highly Dynamic Environments: Do Partial Link Statistics Suffice?” 

2023/05/19

戦略的情報通信研究開発推進事業（SCOPE）令和5年度電波有効利用促進型研究開発に採択されました． 

• • “RAN/V2X協調連携による高周波数帯超高速ビーム追従の研究開発” （代表）

2023/05/19

Journal paper has been accepted on IEEE Transactions on Cognitive Communications and Networking. (IF: 8.6). 

• • S. Kojima, Y. Goto, K. Maruta, S. Sugiura and C-J. Ahn, “Timing Synchronization Based on Supervised Learning of Spectrogram for OFDM Systems” 

2023/04/16

Conference paper has been accepted on IEEE 97th Vehicular Technology Conference (VTC2023-Spring) TPoC6G 2023 Workshop.

• • K. Maruta, “Improving Semi-Blind Interference Suppression on Multi-Cell Massive MIMO Systems by Multi-Antenna Users” 

2023/03/12

Conference paper has been accepted on IEEE 97th Vehicular Technology Conference (VTC2023-Spring). 

• • Y. Sasaki, K. Maruta, S. Kojima, D. Hisano, Y. Nakayama, “Light Source Tracking System for A-QL based Display-Camera Communication” 

2023/03/08

GMOインターネット財団 GMO研究助成制度に採択されました．

• • “移動環境に耐性のある光カメラ通信の研究”

2023/03/04

Journal paper has been accepted on MDPI Drones (IF: 5.532). 

• • Y. Tajima, T. Hiraguri, T. Matsuda, T. Imai, J. Hirokawa, H. Shimizu, T. Kimura, K. Maruta, “Analysis of wind effect on drone relay communications” 

2023/03/03

電気通信普及財団 研究調査助成に採択されました．

• • “多様なアンテナ配置形態におけるMassive MIMO伝送技術の開拓”

2023/02/28

日本学術振興会 科学研究費助成事業に採択されました．

• • 基盤研究(A)（分担），“エネルギー効率改善と通信性能向上を両立する端末連携通信技術”

  • 基盤研究(C)（分担），“時間-周波数チャネル学習による多段階協調中継通信の信号構築” 

2023/02/06

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

• • H. He, J. Wang, S. Kojima, K. Maruta, C-J. Ahn,“Regression CNN based Fast Fading Channel Tracking using Decision Feedback Channel Estimation” 

2022/12/07

Conference paper has been accepted on Optical Fiber Communication Conference (OFC). 

• • Y. Onodera, D. Hisano, K. Maruta, Y. Nakayama, “First Demonstration of 512-Color Shift Keying Signal Demodulation Using Neural Equalization for Optical Camera Communication” 

2022/12/06

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

• • H. He, J. Wang, S. Kojima, K. Maruta, C-J. Ahn, “Data-aided weight with Subcarrier Grouping for Adaptive Array Interference Suppression” 

2022/10/29

Conference papers have been accepted on IEEE Consumer Communications & Networking Conference (CCNC2023) Poster Track. 

• • Y. Sasaki, K. Maruta, S. Kojima, D. Hisano, Y. Nakayama, “Deep Learning based 2D Symbol Detection for Display-Camera Communication”  

  • T. Suzuki, K. Maruta, S. Berra, O. Muta, “Improving Iterative Interference Replica Subtraction based Precoding for Massive MIMO Systems by Partial Zeroization”

2022/10/27

Following paper received best paper award on IEEE/IEIE International Conference on Consumer Electronics Asia 2022 (ICCE-Asia 2022). 

• • H. He, J. Wang, S. Kojima, K. Maruta, C-J. Ahn, “Data-aided weight with subcarrier grouping for Adaptive Array Interference Suppression” 

2022/10/01

Conference paper has been accepted on IEEE Consumer Communications & Networking Conference (CCNC2023). 

• • K. Matsumoto, Y. Inoue, Y. Hara-Azumi, K. Maruta, Y. Nakayama, D. Hisano, “Impact of Quantization Noise on CNN-based Joint Source-Channel Coding and Modulation”  

2022/09/24

Conference paper has been accepted on IEEE/IEIE International Conference on Consumer Electronics Asia 2022 (ICCE-Asia 2022). 

• • H. He, J. Wang, S. Kojima, K. Maruta, C-J. Ahn, “Data-aided weight with subcarrier grouping for Adaptive Array Interference Suppression” 

2022/09/21

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

• • H. He, S. Kojima, K. Maruta, C-J. Ahn, “Adaptive Zero-Padding with Impulsive Training Signal MMSE-SMI Adaptive Array Interference Suppression” 

2022/09/08

Journal paper has been accepted on MDPI Sensors (IF: 3.847).

• • K. Maruta, H. Nishiuchi, J. Nakazato, G. K. Tran, K. Sakaguchi, “5G/B5G mmWave Cellular Networks with MEC Prefetching based on User Context Information”   

2022/08/22

Journal paper has been accepted on IEEE Access (IF: 3.476). 

• • M. Nakahara, M. Nishimura, Y. Ushiku, T. Nishio, K. Maruta, Y. Nakayama, D. Hisano, “Edge Computing-assisted DNN Image Recognition System with Progressive Image Retransmission”   

2022/08/03

Conference paper has been accepted on IEEE Global Communications Conference 2022 (GLOBECOM2022).

• • S. Fujimaki, Y. Inoue, D. Hisano, K. Maruta, Y. Nakayama, Y. Hara-Azumi, “A Self-Attention Network for Deep JSCCM: The Design and FPGA Implementation”  

2022/07/28

Journal paper has been accepted on IEEE Access (IF: 3.476).

• • Y. Nakayama, H. So, E. Takeshita, K. Maruta, “Gamified Participatory D2D Communication for Encouraging User Participation Toward Future Mobile Communication” IEEE Access.  

2022/07/03

Journal paper has been accepted on MDPI Sensors (IF: 3.847).

• • J. Nakazato, Z. Li, K. Maruta, K. Kubota, T. Yu, G. K. Tran, K. Sakaguchi, S. Masuko, “MEC/Cloud Orchestrator to facilitate Private/Local Beyond 5G with MEC and Proof-of-Concept Implementation” 

2022/06/16

Conference papers have been accepted on IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC2022).

• • R. Nojima, O. Muta, T. Makita, K. Maruta, “Joint Peak Cancellation and In-Band Distortion Compensation Scheme for Precoded Massive MIMO-OFDM With Uniform Planar Array”  

  • K. Tokugawa, K. Maruta, K. Sakaguchi, J. Nakazato, S. Masuko, “Design of mmW Digital Twin Platform Toward B5G/6G -High-Precision Measurement System and Relay Station Deployment-”  

2022/06/01

電子情報通信学会誌に解説記事が掲載されました．

• • 丸田一輝, 井田悠太, 實松豊, 牟田修, 岡田啓, 西村寿彦, 岡本英二, 眞田幸俊, 村田英一, 田野哲, “機械学習・数理最適化の無線通信への応用に向けた共有データセット構想”

2022/04/30

Conference papers have been accepted on The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring) Workshops.

• • A. Higuchi, E. Takeshita, D. Hisano, Y. Inoue, K. Maruta, T. Nishio, Y. Hara-Azumi, Y. Nakayama, “Aquatic Fronthaul for Underwater-Ground Communication in 6G Mobile Communications”  

  • E. Takeshita, A. Sakaguchi, D. Hisano, Y. Inoue, K. Maruta, T. Nishio, Y. Hara-Azumi, Y. Nakayama, “Stochastic Image Transmission with CoAP for Extreme Environments”  

  • S. Kojima, Y. Feng, K. Maruta, K. Ootsu, T. Yokota, C-J. Ahn, V. Tarokh, “Towards Deep Learning-Guided Multiuser SNR and Doppler Shift Detection for Next-Generation Wireless Systems”  

  • G. Cho, Y. Shinyama, J. Nakazato, K. Maruta, K. Sakaguchi, “Object Recognition Network using Continuous Roadside Cameras”  

  • J. Nakazato, M. Kuchitsu, A. Pawar, S. Masuko, K. Tokugawa, K. Kubota, K. Maruta, K. Sakaguchi, “Proof-of-Concept of Distributed Optimization of Micro-Services on Edge Computing for Beyond 5G” 

2022/04/02

Conference paper has been accepted on 2022 EuCNC & 6G Summit.

• • J. Nakazato, Z. Li, K. Kubota, K. Maruta, K. Sakaguchi, S. Masuko, "Fully Virtualization Edge Cloud Towards B5G/6G"  

2022/04/01

東京理科大学 工学部 電気工学科（准教授）に着任しました． 

• • Joined Tokyo University of Science as Associate Professor. 

2022/03/18

Journal paper has been accepted on IEICE Transactions on Communications,
This paper is dedicated to the memory of Prof. Kentaro Nishimori.

• • K. Nishimori, K. Maruta, T. Hiraguri, H. Shiomi, “Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO” 

2022/03/05

Conference paper has been accepted on The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring).

• • A. Shigenawa, Y. Onodera, E. Takeshita, D. Hisano, K. Maruta, Y. Nakayama, "Predictive Equalization for Underwater Optical Camera Communication"  

2022/02/28

日本学術振興会 科学研究費助成事業に採択されました．

• • 基盤研究(C)（代表），“超多端末収容のため多次元信号処理による多チャネル推定” 

2022/02/08

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

• • D. Hisano, H. Takano, M. Nakahara, K. Maruta, Y. Nakayama, “Capacity Enhancement on Optical Camera Communication with Clock Divider-mounted Multi-Cameras” 

2022/01/03

Journal paper has been accepted on IEEE Access (IF: 3.367).

• • H. So, K. Maruta, “Sector Design Using Multiband Antenna with Metamaterial Reflector for Cellular UAV System”

2021/12/27

Elevated to IEICE Senior Member.

2021/12/21

Journal paper (letter) has been accepted on Elsevier ICT Express (IF: 4.317).

• • H. Kobayashi, S. Kojima, K. Maruta, T. Sugiyama, C-J. Ahn, “CNN-based Blind SIR Classification Framework for STPA-BAA Spectrum Superposing” 

2021/12/20

Journal paper has been accepted on MDPI Sensors (IF: 3.576).

• • Y. Yin, T. Yu, K. Maruta, K. Sakaguchi, “Distributed and Scalable Radio Resource Management for mmWave V2V Relays towards Safe Automated Driving” 

2021/11/18

Conference paper has been accepted on The 36th International Conference on Information Networking (ICOIN 2022).

• • M. Mizuto, H. So, K. Maruta, Y. Nakayama, “Penalized Approach for Wide Coverage in Gamified Participatory D2D Communication” 

2021/11/02

Conference paper has been accepted on IEICE International Conference on Emerging Technologies for Communications (ICETC 2021).

• • T. Kozuno, D. Hisano, Y. Nakayama, K. Maruta, “Deep Reinforcement Learning for Optimization of Autonomous 5G Base Station System” 

2021/10/21

Conference paper has been accepted on IEEE Consumer Communications & Networking Conference (CCNC 2022).

• • W. Yuan, K. Maruta, Y. Nakayama, D. Hisano, K. Sakaguchi, “Image Size Reduction by Road-Side Edge Computing for Wireless Relay Transmission and Object Detection” 

2021/10/18

Journal paper has been accepted on IEEE Access (IF: 3.367).

• • S. Kojima, H. He, T. Omura, K. Maruta, C-J. Ahn, “Generalized Regression Neural Network based Fast Fading Channel Tracking using Frequency-Domain CSI Smoothing” 

2021/10/07

Elevated to IEEE Senior Member.

2021/10/05

Journal paper has been accepted on Radioengineering (IF: 0.951).

• • H. He, S. Kojima, T. Omura, K. Maruta, C-J. Ahn, “Generalized Regression Neural Network based Channel Identification and Compensation Using Scattered Pilot” 

2021/08/24

Conference paper has been accepted on The 2021 26th IEEE Asia-Pacific Conference on Communications (APCC2021).

• • Y. Ida, K. Maruta, T. Matsumoto, “Phase Rotation and ASK Combination for SD-SM-MIMO” 

2021/08/17

Conference paper has been accepted on IEEE Global Communications Conference 2021 (GLOBECOM2021).

• • Y. Inoue, D. Hisano, K. Maruta, Y. Hara-Azumi, Y. Nakayama, “Deep Joint Source-Channel Coding and Modulation for Underwater Acoustic Communication” 

2021/08/16

Conference paper has been accepted on The 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall).

• • K. Maruta, M. Takizawa, R. Fukatsu, Y. Wang, Z. Li, K. Sakaguchi, “Blind-Spot Visualization via AR Glasses using Millimeter-Wave V2X for Safe Driving” 

2021/08/12

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

• • K. Shimada, S. Kojima, K. Maruta, C-J. Ahn, “Adaptive Spreading Factor Assignment for VLC-OFDM-IDMA with PIC” 

2021/08/06

Conference paper has been accepted on The 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall).

• • H. He, S. Kojima, K. Yonei, K. Maruta, C-J. Ahn, “Variable Frame Splitting for Polar Coded MIMO E-SDM in Fast Fading Channel” 

2021/07/29

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

• N. Funaki, K. Maruta, C-J. Ahn, “Mobility-Aware Null-Space Expansion for Multiuser Massive MIMO,” IEICE Communications Express, Vol. 10, Issue 6, p. 324-330, June 2021.    

2021/07/13

Conference papers have been accepted on The 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall).

• • S. Kojima, Y. Feng, K. Maruta, K. Ootsu, T. Yokota, C-J. Ahn, V. Tarokh, “Investigation of Input Signal Representation to CNN for Improving SNR Classification Accuracy” 

  • K. Suzuoki, D. Hisano, K. Maruta, Y. Inoue, Y. Hara-Azumi, Y. Nakayama, “Space-Time-Domain Adaptive Equalizer Employed Successive Interference Cancellation for Underwater Acoustic Communication” 

  • M. Nakahara, D. Hisano, M. Niahimura, Y. Ushiku, K. Maruta, Y. Nakayama, “Retransmission Edge Computing System Conducting Adaptive Image Compression Based on Image Recognition Accuracy” 

2021/07/06

Journal paper has been accepted on IEEE/OSA Journal of Lightwave Technology (IF: 4.288).

• • K. Suzuoki, D. Hisano, S. Shibita, K. Maruta, A. Maruta, “Nonlinear Quantization for Power-Domain Non-orthogonal Multiple Access Passive Optical Network”

2021/06/23

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

• K. Arai, K. Maruta, C-J. Ahn, “Prediction-Aided Precoding for Multiuser Massive MIMO Null-Space Expansion,” IEICE Communications Express, Vol. 10 Issue 5, p. 212-218, May 2021.    

2021/06/15

Journal paper has been accepted on IEEE Access (IF: 3.745).

• • K. Maruta, K. Senoo, D. Hisano, Y. Nakayama, K. Nishimori, “Interference Gaussianization: Time-Domain Inter-Symbol Spreading for Blind Adaptive Array Signal Source Identification”

2021/05/24

Journal paper has been accepted on IEEE Access (IF: 3.745).

• • H. So, K. Maruta, “Directional Antenna with Lightweight Metamaterial Reflector for UAV-Based Networks”

2021/04/28

Journal paper has been accepted on IEEE Transactions on Communications (IF: 5.646).

• • S. Kojima, K. Maruta, Y. Feng, C-J. Ahn, V. Tarokh, “CNN based Joint SNR and Doppler Shift Classification using Spectrogram Images for Adaptive Modulation and Coding” 

2021/04/12

Journal paper has been accepted on Elsevier Digital Signal Processing (IF: 3.381).

• • N. Funaki, K. Maruta, C-J. Ahn, “Dimensionality Reduction of Interference Subspace for Multiuser Massive MIMO Null-Space Expansion” 

Journal paper has been accepted on IEEE Systems Journal (IF: 3.987).

• • K. Maruta, “Imperfect CSI Muting with Time-Domain Thresholding for Cooperative Inter-Cell Interference Cancellation” 

2021/03/16

Journal papers (letters) have been accepted on IEICE Communications Express.

• • N. Funaki, K. Maruta, C-J. Ahn, “Mobility-Aware Null-Space Expansion for Multiuser Massive MIMO” 

2021/03/13

Journal paper has been accepted on IEEE Access (IF: 3.745). 

• • J. Nakazato, M. Nakamura, T. Yu, Z. Li, K. Maruta, G. K. Tran, K. Sakaguchi, “Market Analysis of MEC-Assisted Beyond 5G Ecosystem” 

2021/03/10

Conference paper has been accepted on Optical Networking and Communication Conference  (OFC2021). 

• • K. Suzuoki, D. Hisano, K. Mishina, K. Maruta, A. Maruta, “Demonstration of Successive Interference Canceller for Uplink PD-NOMA-PON System” 

2021/03/10

Journal papers (letters) have been accepted on IEICE Communications Express.

• • N. Tanuma, Y. Goto, K. Maruta, C-J. Ahn, “Codeword Extension for Polar Decoding and CNN-aided Adaptation” 

  • N. Tanuma, Y. Goto, K. Maruta, C-J. Ahn, “Known Bits Puncturing for Systematic Polar Coded OFDM Systems” 

2021/03/01

Received paper award from Research Institute of Signal Processing (RISP).

• • S. Kojima, K. Watanabe, K. Maruta, C-J. Ahn, “Joint Adaptive Modulation and Transmit Power Control on Frequency Symbol Spreading OFDM Mobile Relay System,” RISP Journal of Signal Processing, Volume 23, Issue 3, pp. 83-93, May 2019. 

2021/02/12

Journal paper (letter) has been accepted on IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences.

• • K. Matsubara, S. Kuroki, K. Ito, K. Shimada, K. Maruta, C-J. Ahn, “Pilot De-contamination by Modified HTRCI with Time-Domain CSI Separation for Two-cell MIMO Downlink” 

2021/02/01

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

• • K. Arai, K. Maruta, C-J. Ahn, “Prediction-Aided Precoding for Multiuser Massive MIMO Null-Space Expansion” 

2021/01/25

Journal papers (letters) have been accepted on IEICE Communications Express.

• • K. Ito, K. Matsubara, K. Shimada, Y. Goto, K. Maruta, C-J. Ahn, “Precise Analytical Model for MRT precoded Massive MIMO” 

  • K. Matsubara, Y. Goto, K. Ito, K. Shimada, K. Maruta, C-J. Ahn, “Cell partitioned M-QAM for Semi-Blind Uplink Interference Suppression on Multicell Massive MIMO Systems” 

2021/01/20

Journal paper has been accepted on IEEE Access (IF: 3.745). 

• • K. Shima, S. Kojima, K. Ito, K. Maruta, C-J. Ahn, “Adaptive Subcarrier Grouping for MMSE-SMI Adaptive Array Interference Suppression” 

2021/01/12

Received IEEE ICCE 2021 Excellent Paper Award. 

• • K. Maruta, D. Hisano, Y. Nakayama, “Fast Beam Tracking Algorithm for Wireless Backhaul in Adaptive Vehicular Cell Networks” 

2020/12/12

Journal paper has been accepted on IEEE Photonics Journal (IF: 2.833). 

• • S. Shibita, D. Hisano, K. Maruta, Y. Nakayama, K. Mishina, A. Maruta, “Optical Reflection Interference Equalization for Single-Wavelength Bidirectional WDM-PON Transmission System” 

2020/12/10

Conference paper has been accepted on the IEEE 93rd Vehicular Technology Conference (VTC2021-Spring). 

• • H. Takano D. Hisano, M. Nakahara, K. Suzuoki, K. Maruta, Y. Onodera, R. Yaegashi, Y. Nakayama, “Visible Light Communication on LED-equipped Drone and Object-Detecting Camera for Post-Disaster Monitoring” 

2020/12/09

Journal paper has been accepted on IEEE Access (IF: 3.745). 

• • K. Arai, K. Maruta, C-J. Ahn, “Uplink Null-Space Expansion for Multiuser Massive MIMO in Time-Varying Channels Under Unknown Interference” 

2020/12/03

Received awards on International Conference on Emerging Technologies for Communications (ICETC2020). 

• Outstanding contribution award

• Student presentation award (Co-authored student's paper presentation)

2020/12/01

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

• • K. Maruta, D. Hisano, Y. Nakayama, “Fast Beam Tracking Algorithm for Wireless Backhaul in Adaptive Vehicular Cell Networks” 

2020/11/19

Journal 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

Journal 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.

• • K. Maruta, F. Falcone, “Massive MIMO Systems”  

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． 

• • Joined Tokyo Tech Academy for Super Smart Society as Specially Appointed Associate Professor. 

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.

• • 安永遼真, 中山悠, 丸田一輝, "TCP技術入門 ――進化を続ける基本プロトコル", 技術評論社, 2019年7月. 

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. 

• • Y. Nakayama, K. Maruta, “Analysis of Nonlinear Bypass Route Computation for Wired and Wireless Network Cooperation Recovery System,” 

2018/08/18

Journal paper has been accepted on Entropy. 

• • K. Maruta, “Dynamic Clustering and Coordinated User Scheduling for Cooperative Interference Cancellation on Ultra-High Density Distributed Antenna Systems,”

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. 

• • K. Maruta, C-J. Ahn, "Uplink Interference Suppression by Semi-Blind Adaptive Array with Decision Feedback Channel Estimation on Multicell Massive MIMO Systems," 

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,”