Tomoki Murakami

81 papers A 1B 7C 2Misc 3Journal 32Unranked 36
YearRankTypeTitle / Venue / Authors
2026 — conf
Demo: WiPiCap: Real-time IEEE 802.11ac/ax Compressed Beamforming Report Decoding System.
CCNC
Yusuke Ikemura, Sorachi Kato, Tomoki Murakami, Takeru Fukushima, Takuya Fujihashi, Shunsuke Saruwatari
2026 Misc conf
Indoor Dual-Band Experimental Evaluation of RIS-Aided Wireless Links at 5.2 GHz and 28 GHz under NLoS Conditions.
COMSNETS
Pujitha Mamillapalli, Takumi Yoneda, Yoghitha Ramamoorthi, Abhinav Kumar, Tomoki Murakami, Tomoaki Ogawa, Yasushi Takatori
2026 J jnl
Joint Design of Intelligent Reflecting Surface Partitioning and Scheduling for Multiuser Communications.
IEEE Trans. Netw. Sci. Eng.
Hiroaki Hashida, Taishi Endo, Yishi Zhu, Yuichi Kawamoto, Nei Kato, Takumi Yoneda, Tomoki Murakami
2026 J jnl
Massive Metasurface-Assisted Multidirectional Beam Shaping: Prototyping and Outdoor Experimental Results in Millimeter-Wave Band.
IEEE Access
Takumi Yoneda, Tomoki Murakami, Sho Yoshida, Toshiki Sayama, Osamu Kagaya, Dan Mohri, Satoshi Suyama, Yuyuan Chang, Huiling Jiang, Yasushi Takatori
2026 Misc conf
Unsupervised Neural Network for Joint Optimization of RIS Phase Shift and Resource Allocation in mmWave Network.
COMSNETS
Pujitha Mamillapalli, Yoghitha Ramamoorthi, Abhinav Kumar, Tomoki Murakami, Tomoaki Ogawa, Yasushi Takatori
2025 J jnl
An Open-Source SDR-Based Device-Free Sensing Platform for Integrated Sensing and Communication (ISAC).
IEEE Open J. Commun. Soc.
Hanae Otani, Tomoki Murakami, Kazuya Ohara, Shinya Otsuki, Yasushi Takatori, Tomoaki Ogawa
2025 — conf
CSI Sampling for Room-by-Room Device Grouping in Practical Environments.
CCNC
Shigemi Ishida, Tomoki Murakami, Shinya Otsuki
2025 J jnl
Device-Free AMR Crossing Detection Using LTE Signals for Smart Factory Applications.
IEEE Access
Hanae Otani, Tomoki Murakami, Kazuya Ohara, Yasushi Takatori, Tomoaki Ogawa
2025 — conf
Distributed RIS Control Approach for Real Environments with Dynamic Blockage.
CCNC
Takumi Yoneda, Tomoki Murakami, Yasushi Takatori, Tomoaki Ogawa
2025 — conf
Environment-Aware Beam Selection for Efficient Codebook Design in IRS-Assisted Communications.
ICC
Yugo Tanabu, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Takumi Yoneda, Tomoki Murakami
2025 J jnl
Experimental Evaluation of Distributed Reconfigurable Intelligent Surfaces Control for Green Wireless Networks.
IEEE Open J. Commun. Soc.
Takumi Yoneda, Tomoki Murakami, Yasushi Takatori, Tomoaki Ogawa
2025 — conf
Technical Overview and Trend for Integrated Sensing and Communications (ISAC).
APWCS
Hideya So, Nobuaki Kuno, Shuhei Saito, Tomoki Murakami, Satoshi Suyama
2025 — conf
Trends in Wireless Relay and Reflector Technology.
APWCS
Jin Nakazato, Kazuto Yano, Yuyuan Chang, Takuya Ohto, Tomoki Murakami, Gia Khanh Tran, Yuichi Kawamoto, Kei Sakaguchi
2025 J jnl
Unsupervised Learning based Element Resource Allocation for Reconfigurable Intelligent Surfaces in mmWave Network.
CoRR
Pujitha Mamillapalli, Yoghitha Ramamoorthi, Abhinav Kumar, Tomoki Murakami, Tomoaki Ogawa, Yasushi Takatori
2025 J jnl
Wi-Fi Meets Sound: A Deep Fusion Leap Beyond Single-Modality for Device Localization.
IEEE Access
Takeru Fukushima, Takuma Matsukawa, Yusuke Ikemura, Hayato Terasoma, Sorachi Kato, Takuya Fujihashi, Tomoki Murakami, Yusuke Asai, Shunsuke Saruwatari
2024 J jnl
AoA-net: Estimating Angle-of-arrival Using Wi-Fi Channel State Information Based on Deep Neural Networks with Subcarrier Selection.
J. Inf. Process.
Teerawat Kumrai, Zesheng Cai, Takuya Maekawa, Takahiro Hara, Kazuya Ohara, Tomoki Murakami, Hirantha Abeysekera
2024 — conf
CSI2PC: 3D Point Cloud Reconstruction Using CSI.
CCNC
Natsuki Ikuo, Sorachi Kato, Takuma Matsukawa, Tomoki Murakami, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari
2024 J jnl
Device-Free Indoor WLAN Localization With Distributed Antenna Placement Optimization and Spatially Localized Regression.
IEEE Trans. Wirel. Commun.
Osamu Muta, Kazuki Noguchi, Junsuke Izumi, Shunsuke Shimizu, Tomoki Murakami, Shinya Otsuki
2024 — conf
Dividing Control Scheme for Intelligent Reflecting Surfaces Towards the Realization of Multiple Simultaneous Connections.
ICC Workshops
Taishi Endo, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Tomoki Murakami, Yoghitha Ramamoorthi
2024 J jnl
Experimental Evaluation of Device-Free Indoor Localization Using Channel State Information in WLAN Systems with Distributed Antennas.
IEICE Trans. Commun.
Osamu Muta, Junsuke Izumi, Shunsuke Shimizu, Tomoki Murakami, Shinya Otsuki
2024 — conf
Experimental Evaluation of WLAN-based Object Detection Using CSI in Outdoor and Large-scale Indoor Environments.
VTC Fall
Shunsuke Shimizu, Osamu Muta, Tomoki Murakami, Shinya Otsuki, Ranae Otani
2024 — conf
Frequency Resource Allocation for IRS-Aided Communication Using Beam Squint Approach.
CCNC
Ei Tanaka, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Riku Ohmiya, Tomoki Murakami
2024 A conf
Poster: Activity Recognition Using CSI Backscatter with Commodity Wi-Fi.
MobiSys
Viktor Erdélyi, Kazuki Miyao, Akira Uchiyama, Tomoki Murakami
2024 — conf
Poster: α Fair Resource Allocation for RIS-Assisted NOMA V2X Systems with Imperfect Phase Compensation.
VNC
Swaraj Srivastava, Yoghitha Ramamoorthi, Abhinav Kumar, Tomoki Murakami, Tomoaki Ogawa, Yasushi Takatori
2024 — conf
Recent Activities on New Radio Network Topology for 5G Evolution and 6G.
APWCS
Satoshi Suyama, Masashi Iwabuchi, Kenta Goto, Kiichi Tateishi, Tomoki Murakami
2024 Misc conf
Resource Allocation in Reconfigurable Intelligent Surfaces with Imperfect Phase Compensation.
COMSNETS
Swaraj Srivastava, Yoghitha Ramamoorthi, Abhinav Kumar, Tomoki Murakami, Tomoki Ogawa, Yasushi Takatori
2024 J jnl
Simultaneous Multiple Connections and Increased Frequency Efficiency Using Beam Squint Approach for IRS-Based Communication.
IEEE Trans. Veh. Technol.
Yuichi Kawamoto, Ei Tanaka, Shikhar Verma, Nei Kato, Masashi Iwabuchi, Riku Ohmiya, Yoghitha Ramamoorthi, Tomoki Murakami
2024 C conf
Smartphone Contact-Object Estimation by Acoustic Sensing Focusing on Abstraction Level.
MobiQuitous
Haruya Nishi, Shigemi Ishida, Tomoki Murakami, Shinya Otsuki
2024 — conf
V2I Blockage Modeling and Performance Evaluation for Connected Autonomous Vehicle.
VTC Spring
Weiqi Chi, Jin Nakazato, Tomoki Murakami, Manabu Tsukada
2023 J jnl
Automated construction of Wi-Fi-based indoor logical location predictor using crowd-sourced photos with Wi-Fi signals.
Pervasive Mob. Comput.
Teerawat Kumrai, Joseph Korpela, Yizhe Zhang, Kazuya Ohara, Tomoki Murakami, Hirantha Abeysekera, Takuya Maekawa
2023 J jnl
Device-Free WLAN Based Indoor Localization Scheme With Spatially Concatenated CSI and Distributed Antennas.
IEEE Trans. Veh. Technol.
Osamu Muta, Keisuke Takata, Kazuki Noguchi, Tomoki Murakami, Shinya Otsuki
2023 — conf
Experimental Evaluation of MIMO-WLAN-based Object Detection with Reflectors.
VTC Fall
Shunsuke Shimizu, Osamu Muta, Kazuki Noguchi, Junsake Izumi, Tomoki Murakami, Shinya Otsuki
2023 — conf
Exploiting Reflection Direction Variation for Phase Control in Multiple Simultaneous IRS Links.
VTC2023-Spring
Ei Tanaka, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Riku Ohmiya, Tomoki Murakami
2023 B conf
Multi-User MIMO Based on Millimeter Wave Massive Analog Relay Stations.
PIMRC
Suwen Ke, Kei Sakaguchi, Gia Khanh Tran, Masashi Iwabuchi, Tomoki Murakami
2023 — conf
Performance of WLAN-based Object Detection with Distributed Antenna and Spatially Concatenated CSI.
VTC Fall
Shunsuke Shimizu, Osamu Muta, Kazuki Noguchi, Tomoki Murakami, Shinya Otsuki
2023 — conf
Robot-Network Co-optimization Using Deep Reinforcement Learning.
CCNC
Hiroaki Shinmiya, Takato Motoo, Takuya Fujihashi, Riichi Kudo, Kahoko Takahashi, Tomoki Murakami, Takashi Watanabe, Shunsuke Saruwatari
2023 — conf
Smartphone Cover-State Classification via Acoustic Sensing for Smartphone Search in Indoor Environments.
GCCE
Haruya Nishi, Shigemi Ishida, Tomoki Murakami, Shinya Otsuki
2023 — conf
Towards Activity Recognition Using Wi-Fi CSI from Backscatter Tags.
PerCom Workshops
Viktor Erdélyi, Kazuki Miyao, Akira Uchiyama, Tomoki Murakami
2022 J jnl
CBR-ACE: Counting Human Exercise using Wi-Fi Beamforming Reports.
J. Inf. Process.
Sorachi Kato, Tomoki Murakami, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari
2022 J jnl
Centralized Control Method of Multi-Radio and Terminal Connection for 802.11 Wireless LAN Mixed Environment.
IEICE Trans. Commun.
Toshiro Nakahira, Koichi Ishihara, Motoharu Sasaki, Hirantha Abeysekera, Tomoki Murakami, Takatsune Moriyama, Yasushi Takatori
2022 J jnl
Efficient Zero-Knowledge Proofs of Graph Signature for Connectivity and Isolation Using Bilinear-Map Accumulator.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Toru Nakanishi, Hiromi Yoshino, Tomoki Murakami, Guru-Vamsi Policharla
2022 J jnl
Feasibility Study of Practical AoA Estimation Using Compressed CSI on Commercial WLAN Devices.
IEEE Access
Takeru Fukushima, Tomoki Murakami, Hirantha Abeysekera, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari
2022 — conf
Fundamental Investigation of Wi-Fi Beamforming Report Properties on Wireless Sensing.
SAM
Sorachi Kato, Takuma Matsukawa, Tomoki Murakami, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari
2022 B conf
IRS-aided Communications Without Channel State Information Relying on Deep Reinforcement Learning.
GLOBECOM
Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Tomoki Murakami
2022 J jnl
Mobility-Aware User Association Strategy for IRS-Aided mm-Wave Multibeam Transmission Towards 6G.
IEEE J. Sel. Areas Commun.
Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Tomoki Murakami
2022 J jnl
Performance Evaluation of Uplink Multiuser MIMO-OFDM System With Single RF Chain Receiver.
IEEE Access
Tomoki Murakami, Ryoutaro Taniguchi, Tomoaki Ogawa, Yasushi Takatori
2022 J jnl
Resource Allocation for Reconfigurable Intelligent Surface Assisted Dual Connectivity.
Sensors
Yoghitha Ramamoorthi, Masashi Iwabuchi, Tomoki Murakami, Tomoaki Ogawa, Yasushi Takatori
2022 B conf
Room-by-Room Device Grouping for Put-and-Play IoT System.
GLOBECOM
Shigemi Ishida, Tomoki Murakami, Shinya Otsuki
2021 — conf
A CSI-based Object Detection Scheme using Interleaved Subcarrier Selection in Wireless LAN Systems with Distributed Antennas.
VTC Fall
Kazuki Noguchi, Osamu Muta, Tomoki Murakami, Shinya Otsuki
2021 J jnl
An Actual Stadium Verification of WLAN Using a Distributed Smart Antenna System (D-SAS).
IEICE Trans. Commun.
Tomoki Murakami, Koichi Ishihara, Hirantha Abeysekera, Yasushi Takatori
2021 J jnl
CSI2Image: Image Reconstruction From Channel State Information Using Generative Adversarial Networks.
IEEE Access
Sorachi Kato, Takeru Fukushima, Tomoki Murakami, Hirantha Abeysekera, Yusuke Iwasaki, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari
2021 J jnl
Dynamic Terminal Connection Control Using Multi-Radio Unlicensed Access for 5G Evolution and Beyond.
IEICE Trans. Commun.
Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Motoharu Sasaki, Takatsune Moriyama, Yasushi Takatori
2020 J jnl
CSI2Image: Image Reconstruction from Channel State Information Using Generative Adversarial Networks.
CoRR
Sorachi Kato, Takeru Fukushima, Tomoki Murakami, Hirantha Abeysekera, Yusuke Iwasaki, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari
2020 — conf
Efficient Zero-Knowledge Proofs of Graph Signature for Connectivity and Isolation Using Bilinear-Map Accumulator.
APKC@AsiaCCS
Toru Nakanishi, Hiromi Yoshino, Tomoki Murakami, Guru-Vamsi Policharla
2020 — conf
Performance Evaluation of Object Detection Utilizing Channel State Information in Wireless LAN Systems with Distributed Antennas.
WPMC
Keisuke Takata, Osamu Muta, Tomoki Murakami, Shinya Otsuki
2020 — conf
Towards People Counting Using Wi-Fi CSI of Mobile Devices.
PerCom Workshops
Masahide Mizutani, Akira Uchiyama, Tomoki Murakami, Hirantha Abeysekera, Teruo Higashino
2019 — conf
Centralized Resource Allocation Method for Multiuser MIMO Capable Wireless LANs.
WPMC
Soma Yamashita, Hirofumi Suganuma, Tomoki Murakami, Yasushi Takatori, Fumiaki Maehara
2019 — conf
DNN-based Outdoor NLOS Human Detection Using IEEE 802.11ac WLAN Signal.
IEEE SENSORS
Ryo Takahashi, Shigemi Ishida, Akira Fukuda, Tomoki Murakami, Shinya Otsuki
2019 — conf
Evaluating Indoor Localization Performance on an IEEE 802.11ac Explicit-Feedback-Based CSI Learning System.
VTC Spring
Takeru Fukushima, Tomoki Murakami, Hirantha Abeysekera, Shunsuke Saruwatari, Takashi Watanabe
2019 B conf
Initial Attempt on Outdoor Human Detection using IEEE 802.11ac WLAN Signal.
SAS
Masahiko Miyazaki, Shigemi Ishida, Akira Fukuda, Tomoki Murakami, Shinya Otsuki
2019 — conf
VLC/RF Channel Switching Process Adapting to User Mobility in Coexistence Architecture.
OECC/PSC
Ryota Shiina, Kazutaka Hara, Tomohiro Taniguchi, Toshiro Nakahira, Tomoki Murakami, Satoshi Ikeda
2018 J jnl
CSI Feedback Reduction Method for Downlink Multiuser MIMO Transmission Using Dense Distributed Antenna Selection.
IEICE Trans. Commun.
Tomoki Murakami, Koichi Ishihara, Yasushi Takatori, Masato Mizoguchi, Kentaro Nishimori
2018 J jnl
Dynamic Group-Based Antenna Selection for Uplink Multi-User MIMO in Distributed Antenna System.
IEICE Trans. Commun.
Sho Yoshida, Kentaro Nishimori, Soichi Ito, Tomoki Murakami, Koichi Ishihara, Yasushi Takatori
2018 J jnl
On the Feasibility of an Adaptive Movable Access Point System in a Static Indoor WLAN Environment.
IEICE Trans. Commun.
Tomoki Murakami, Shingo Oka, Yasushi Takatori, Masato Mizoguchi, Fumiaki Maehara
2018 — conf
WiSMA: strategy management architecture for wireless resource optimization.
ISPACS
Tomoki Murakami, Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Hiroyuki Nakamura
2017 — conf
A study of bus location system using LoRa: Bus location system for community bus "Notty".
GCCE
Mikiko Sode Tanaka, Yosuke Miyanishi, Masaharu Toyota, Tomoki Murakami, Ryotaro Hirazakura, Takao Itou
2017 J jnl
Cooperative Inter-cell Interference Mitigation Scheme with Downlink MU-MIMO Beamforming for Dense Wireless LAN Environment.
Wirel. Pers. Commun.
Koichi Ishihara, Tomoki Murakami, Yusuke Asai, Yasushi Takatori, Masato Mizoguchi
2017 — conf
Performance of adaptive movable access point system in the presence of positioning error.
RWS
Shingo Oka, Tomoki Murakami, Yasushi Takatori, Masato Mizoguchi, Fumiaki Maehara
2015 J jnl
Weighted-Combining Calibration on Multiuser MIMO Systems with Implicit Feedback.
IEICE Trans. Commun.
Hayato Fukuzono, Tomoki Murakami, Riichi Kudo, Yasushi Takatori, Masato Mizoguchi
2014 B conf
Combining calibration schemes on a real-time multiuser MIMO-OFDM system with implicit feedback.
PIMRC
Hayato Fukuzono, Tomoki Murakami, Riichi Kudo, Shoko Shinohara, Yasushi Takatori, Masato Mizoguchi
2013 J jnl
Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems.
IEICE Trans. Commun.
Tomoki Murakami, Koichi Ishihara, Riichi Kudo, Yusuke Asai, Takeo Ichikawa, Masato Mizoguchi
2013 J jnl
Performance Evaluation of Interference-Aware Multi-Cell Beamforming for an Overlapping Cells Environment.
IEICE Trans. Commun.
Tomoki Murakami, Riichi Kudo, Takeo Ichikawa, Naoki Honma, Masato Mizoguchi
2013 — conf
Selective beamforming for inter-cell interference mitigation in coordinated wireless LANs.
WPMC
Koichi Ishihara, Tomoki Murakami, Yusuke Asai, Masato Mizoguchi
2013 B conf
Weighted-combining calibration for implicit feedback beamforming on downlink multiuser MIMO systems.
PIMRC
Hayato Fukuzono, Tomoki Murakami, Riichi Kudo, Yasushi Takatori, Masato Mizoguchi
2012 C conf
Experimental evaluation of distributed ZF beamforming in an indoor multi-cell environment.
APCC
Tomoki Murakami, Koichi Ishihara, Riichi Kudo, Yusuke Asai, Takeo Ichikawa, Masato Mizoguchi
2012 — conf
Self-interference canceller for full-duplex radio relay station using virtual coupling wave paths.
APSIPA
Kazunori Hayashi, Yasuo Fujishima, Megumi Kaneko, Hideaki Sakai, Riichi Kudo, Tomoki Murakami
2012 — conf
Successive Optimization Transmission for High and Low SNR Stations in Wireless LAN Systems.
VTC Fall
Riichi Kudo, Koichi Ishihara, Tomoki Murakami, B. Hirantha Sithira Abeysekera, Yusuke Asai, Masato Mizoguchi
2011 — conf
Performance evaluation of distributed multi-cell beamforming for MU-MIMO systems.
ISWCS
Tomoki Murakami, Riichi Kudo, Yusuke Asai, Tomoaki Kumagai, Masato Mizoguchi
2011 — conf
User Selection for Multiuser MIMO Systems Based on Block Diagonalization in Wide-Range SNR Environment.
ICC
Riichi Kudo, Yasushi Takatori, Tomoki Murakami, Masato Mizoguchi
2010 J jnl
Spatial Domain Resource Sharing for Overlapping Cells in Indoor Environment.
Int. J. Digit. Multim. Broadcast.
Riichi Kudo, Yasushi Takatori, Kentaro Nishimori, Takeo Ichikawa, Tomoki Murakami, Masato Mizoguchi, Masahiro Morikura
2009 B conf
Multi site MIMO channel analysis at 4.85GHz in outdoor environment.
PIMRC
Tomoki Murakami, Naoki Honma, Kentaro Nishimori, Riichi Kudo, Yasushi Takatori, Masato Mizoguchi