keyword Statistical signal processing，Wireless communication systems
Osaka University Graduate School of Engineering Division of Electrical, Electronic and Informations Engineering, Ph.D. degree
2017/04 - 2019/03
Osaka University Graduate School of Engineering Division of Electrical, Electronic and Informations Engineering, M.S. degree
2016/04 - 2017/03
Osaka University School of Engineering Electronic and Information Engineering
2012/04 - 2016/03
Technical Committee on Signal Processing (SIP), IEICE Expert member Academic society
2025/04 - Present
Technical Committee on Radio Communication Systems (RCS), Basics WS Committee, IEICE Secretary Academic society
2024/09 - Present
IEICE, Transactions on Communications Editorial Committee Editor Academic society
2024/04 - Present
Technical Committee on Wideband System (WBS), IEICE Secretary Academic society
2024/04 - Present
Technical Committee on Information Theory (IT), IEICE Expert member Academic society
2022/04 - Present
IEICE, Transactions on Communications Editorial Committee Reviewer Academic society
2019/04 - Present
Technical Committee on Radio Communication Systems (RCS), IEICE Expert member Academic society
2019/04 - Present
IEEE
IEICE
Informatics / Information networks /
The 40th Telecommunications Advancement Foundation Award
Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi The Telecommunications Advancement Foundation 2025/03
The 40th Telecommunications Advancement Foundation Award (Student Paper Award)
Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei The Telecommunications Advancement Foundation 2025/03
IEEE Wireless Communications Letters Exemplary Reviewers (2023)
Takumi Takahashi IEEE Communications Society 2024/06
IEICE Communications Society Best Paper Award (2023)
Yuki Hayama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai IEICE Communication Society 2024/05
IEICE Best Paper Award (2023)
Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi IEICE 2024/04
Signal Processing Special Achievement Award
Takumi Takahashi IEICE Technical Committee on Signal Processing 2023/11
Communications Society Activities Achievement Award
Takumi Takahashi IEICE Communication Society 2023/09
Young Professionals Award
Takumi Takahashi IEEE Kansai Section 2023/03
Communications Society Activities Achievement Award
Takumi Takahashi IEICE Communication Society 2021/09
IEICE Communications Society Best Paper Award (2019)
Takumi Takahashi, Shinsuke Ibi, Sampei Seiichi Communication Society 2020/05
Young Researcher's Award
Takumi Takahashi IEICE 2020/03
学生研究奨励賞
Takumi Takahashi IEEE Kansai Section 2020/02
Young Author Best Paper Award
Takumi Takahashi IEICE, Symposium on Information Theory and its Applications Subsociety 2017/12
Radio Communication Systems Active Research Award
Takumi Takahashi IEICE Technical Committee 2017/05
Young Researcher’s Encouragement Award
Takumi Takahashi IEEE VTS Japan chapter 2016/09
Cross-Domain Joint Channel and Data Estimation for mmWave MIMO-OFDM Systems With Low-Resolution ADCs
Kenta Ito, Takumi Takahashi, Koji Ishibashi, Shinsuke Ibi, Hideki Ochiai
IEEE Journal of Selected Topics in Signal Processing Vol. Early Access p. 1-16 2025/07 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Physics-Aware Decoding for Communication Channels Governed by Partial Differential Equations
Tadashi Wadayama, Koji Igarashi, Takumi Takahashi
Proc. of IEEE ISIT '25 2025/07 Research paper (international conference proceedings)
Quaternion Domain Super MDS for 3D Localization
Masuoka, Keigo, Takahashi, Takumi, Abreu, Giuseppe, Ochiai, Hideki
Proc. of IEEE SPAWC '25 2025/07 Research paper (international conference proceedings)
Turbo Equalization and EP: A Comparative Analysis of Extrinsic Value Exchange Mechanisms
Kobayashi, Fuga, Takahashi, Takumi, Ibi, Shinsuke, Ochiai, Hideki
Proc. of IEEE SPAWC '25 2025/07 Research paper (international conference proceedings)
Complexity Reduction of Soft-decision FEC Decoder Using Polar Coding with CRC-aided Successive Cancellation List Decoding
Zhiyuan Song, Gakuto Kanematsu, Takumi Takahashi, Yohei Koganei, Koji Igarashi
Proc. of OECC '25 2025/07 Research paper (international conference proceedings)
Physics-informed Machine Learning for Modeling Dual-polarization Single-mode Fiber Transmission with Statistical Polarization Rotations
Keisho Yamamoto, Takashi Taniguchi, Takumi Takahashi, Tadashi Wadayama, Koji Igarashi
Proc. of OECC '25 2025/07 Research paper (international conference proceedings)
EXIT Chart Analysis of Expectation Propagation-Based Iterative Detection and Decoding
Fuga Kobayashi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
IEEE Open Journal of the Communications Society Vol. 6 p. 5249-5268 2025/06 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Enabling Massive Index Modulation Systems via Combinatorics-Free Detection
Hyeon Seok Rou, Giuseppe Thadeu Freitas De Abreu, Takumi Takahashi, David González G., Osvaldo Gonsa
IEEE Transactions on Wireless Communications Vol. Early Access p. 1-1 2025/05 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Bayesian Iterative Demodulation and Decoding for LoRa Modulation in Fast Rayleigh Fading Channels
Shinsuke Ibi, Takuya Mihara, Takumi Takahashi, Hisato Iwai
IEICE Transactions on Communications Vol. E108-B No. 4 p. 509-519 2025/04 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Learning Stabilization in Deep Unfolding of Generalized Approximate Message Passing
Tomoharu Furudoi, Takumi Takahashi, Shinsuke Ibi, and Hideki Ochiai
Proc. of IEEE WCNC '25 p. 1-6 2025/03/24 Research paper (international conference proceedings)
Publisher: IEEE
Vector Similarity Search-Based MCS Selection for Iterative Signal Detection in Massive Multi-User MIMO-OFDM Systems
Fuga Kobayashi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai, Kazushi Muraoka, Takanobu Doi, Naoto Ishii
Proc. of IEEE WCNC '25 p. 1-6 2025/03/24 Research paper (international conference proceedings)
Publisher: IEEE
Joint Channel, CFO, and Data Estimation via Bayesian Inference for Multi-User MIMO-OFDM Systems
Kenta Ito, Takumi Takahashi, Koji Ishibashi, Koji Igarashi, Shinsuke Ibi
IEEE Transactions on Wireless Communications Vol. 24 No. 3 p. 1898-1915 2025/03 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Joint Channel, Data, and Radar Parameter Estimation for AFDM Systems in Doubly-Dispersive Channels
Kuranage Roche Rayan Ranasinghe, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Takumi Takahashi, Kenta Ito
IEEE Transactions on Wireless Communications Vol. 24 No. 2 p. 1602-1619 2025/02 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Data-Driven Tuning for Weighted Least Squares of BLE-AoA-based Indoor Localization
Ginji Ohashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of APSIPA ASC '24 2024/12/03 Research paper (international conference proceedings)
Publisher: IEEE
Blind Self-Interference Analog Canceller with Differential Delay for Backscatter Communications
Koichi Nishikawa, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of APSIPA ASC '24 p. 1-6 2024/12/03 Research paper (international conference proceedings)
Publisher: IEEE
Receive Beamforming Designed for Massive Multi-user MIMO Detection via Gaussian Belief Propagation
Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi
Proc. of IEICE ICETC '24 2024/11 Research paper (international conference proceedings)
Model-Based Tuning of Machine Learning-Aided GNSS Positioning
Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of IEICE ICETC '24 2024/11 Research paper (international conference proceedings)
Sparse Bayesian Learning Using Complex t-Prior for Massive Multi-User MIMO Channel Estimation
Kengo Furuta, Takumi Takahashi, Hideki Ochiai
Proc. of IEEE VTC '24-Fall 2024/10 Research paper (international conference proceedings)
Pilotless Self-Interference Canceller of IBFD for BLE in the Presence of Fractional Delay Paths
Koichi Nishikawa, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of IEEE VTC '24-Fall 2024/10 Research paper (international conference proceedings)
Point Cloud Geometry and Attribute Transmission over MIMO Channels
Naruto Miyata, Takuya Fujihashi, Takumi Takahashi, Shunsuke Saruwatari, Takashi Watanabe
Proc. of IEEE VTC '24-Fall 2024/10 Research paper (international conference proceedings)
Precoder Design for Time-Varying mmWave MIMO Detection Based on Expectation Propagation
Tomoharu Furudoi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
Proc. of IEEE VTC '24-Fall 2024/10 Research paper (international conference proceedings)
IRS-Aided Over-the-Air Image Processing: Single Antenna Imaging
Sora Tahira, Takuya Fujihashi, Takumi Takahashi, Shunsuke Saruwatari, Takashi Watanabe
Proc. of IEEE PIMRC '24 2024/09/02 Research paper (international conference proceedings)
Publisher: IEEE
Joint Channel and Data Estimation via Parametric Bilinear Inference for OTFS Demodulation
Kenta Ito, Takumi Takahashi, Kengo Furuta, Shinsuke Ibi, Giuseppe Thadeu Freitas de Abreu
IEEE Open Journal of the Communications Society Vol. 5 p. 6090-6105 2024/09 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Sparse Bayesian Learning Using Complex t-Prior for Beam-Domain Massive MIMO Channel Estimation
Kengo Furuta, Takumi Takahashi, Hideki Ochiai
IEEE Open Journal of the Communications Society Vol. 5 p. 5905-5920 2024/09 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Bayesian Bilinear Inference for Joint Channel Tracking and Data Detection in Millimeter-Wave MIMO Systems
Takumi Takahashi, Hiroki Iimori, Koji Ishibashi, Shinsuke Ibi, Giuseppe Thadeu Freitas de Abreu
IEEE Transactions on Wireless Communications Vol. 23 No. 9 p. 11136-11153 2024/09 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Differential Active Self-Interference Cancellation for Asynchronous In-Band Full-Duplex GFSK
Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Transactions on Communications Vol. E107-B No. 8 p. 552-563 2024/08 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Low-Complexity Cross-Domain Iterative Detection Based on Local LMMSE Filters for OTFS
Takumi Yoshida, Takumi Takahashi, Koji Ishibashi
Proc. of IEEE ICC '24 WS 2024/06 Research paper (international conference proceedings)
Outer Loop Link Adaptation Based on User Multiplexing for Generalized Approximate Message Passing in Massive MIMO
Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi
Proc. of IEEE WCNC '24 p. 1-6 2024/04/21 Research paper (international conference proceedings)
Publisher: IEEE
Bilinear Gaussian Belief Propagation for Massive MIMO Detection With Non-Orthogonal Pilots
Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEEE Transactions on Communications Vol. 72 No. 2 p. 1045-1061 2024/02 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Joint Channel and Data Estimation via Bayesian Parametric Bilinear Inference for OTFS Transmission
Kengo Furuta, Takumi Takahashi, Kenta Ito, Shinsuke Ibi
Proc. of IEEE CCNC '24 2024/01/06 Research paper (international conference proceedings)
Publisher: IEEE
Concatenated Structure of EP and Turbo Equalizer for Overloaded Massive MIMO Detection
Takuma Kobayashi, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE CCNC '24 2024/01/06 Research paper (international conference proceedings)
Publisher: IEEE
Data-Driven Tuning of Deep Unfolding-Aided Blind Signal Separation for Short Data Length
Taisuke Nogami, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of IEEE CCNC '24 2024/01/06 Research paper (international conference proceedings)
Publisher: IEEE
Blind Self-Interference Canceller with Adaptive Differential Delay for IBFD in the Presence of Fractional Delay Path
Koichi Nishikawa, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of IEEE VTC '23-Fall 2023/10 Research paper (international conference proceedings)
Publisher: IEEE
Receive Beamforming Designed for Massive Multi-User MIMO Detection via Gaussian Belief Propagation
Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi
IEICE Transactions on Communications Vol. E106.B No. 9 p. 758-767 2023/09 Research paper (scientific journal)
Publisher: Institute of Electronics, Information and Communications Engineers (IEICE)
Bayesian Receiver Design via Bilinear Inference for Cell-Free Massive MIMO with Low-Resolution ADCs
Takumi Takahashi, Hiroki Iimori, Kengo Ando, Koji Ishibashi, Shinsuke Ibi, Giuseppe Thadeu Freitas De Abreu
IEEE Transactions on Wireless Communications Vol. 22 No. 7 p. 4756-4772 2023/07 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Wireless Location Tracking via Complex-Domain Super MDS with Time Series Self-Localization Information
Yuya Nishi, Takumi Takahashi, Hiroki Iimori, Giuseppe Abreu, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICASSP '23 2023/06 Research paper (international conference proceedings)
Publisher: IEEE
AoA Estimation-Aided Bayesian Receiver Design via Bilinear Inference for mmWave Massive MIMO
Kenta Ito, Takumi Takahashi, Koji Igarashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICC '23 2023/05 Research paper (international conference proceedings)
Publisher: IEEE
Signal Detection Based on Belief Propagation for FTN and Its Data-Driven Tuning
Yuki Hayama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Transactions on Communications Vol. J106-B No. 3 p. 187-197 2023/03 Research paper (scientific journal)
Data-Driven Tuning of Deep Unfolding-Aided GNSS Positioning
Yuki Hayama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Transactions on Communications Vol. J106-B No. 3 p. 248-259 2023/03 Research paper (scientific journal)
Uplink Signal Detection via Look-Up Table-Based AMP for Massive MIMO Systems
Atsunori Shimamura, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEEE Access Vol. 11 p. 113044-13057 2023/02 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Referential Approximate Message Passing for Quantized Large MIMO Detection
Atsunori Shimamura, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE GLOBECOM '22 2022/12/04 Research paper (international conference proceedings)
Publisher: IEEE
Deep Unfolding-Aided Sum-Product Algorithm for Error Correction of CRC Coded Short Message
Qilin Zhang, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of APSIPA ASC '22 2022/11 Research paper (international conference proceedings)
Publisher: IEEE
An Efficient Vector-valued Belief Propagation Decoder for Quadrature Spatial Modulation
Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Takumi Takahashi
Proc. Asilomar Conference on Signals, Systems, and Computers '22 p. 27-31 2022/10/31 Research paper (international conference proceedings)
Publisher: IEEE
Joint Activity and Channel Estimation for Extra-Large MIMO Systems
Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David Gonzalez G., Osvaldo Gonsa
IEEE Transactions on Wireless Communications Vol. 21 No. 9 p. 7253-7270 2022/09 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Soft-decision FEC Designed for Optically Preamplified PAM4 Direct Detection
Koji Igarashi, Takumi Takahashi, Seiichi Sampei, Kyo Inoue
Proc. OECC/PSC '22 2022/07 Research paper (international conference proceedings)
Gaussian Belief Propagation for mmWave Large MIMO Detection with Low-Resolution ADCs
Itsuki Watanabe, Takumi Takahashi, Shinsuke Ibi, Antti Tölli, Seiichi Sampei
Proc. of IEEE SPAWC '22 2022/07 Research paper (international conference proceedings)
Phase-Noise-Aware LLR Calculation for mmWave MIMO Systems with High-Order Modulation
Daiki Wakumoto, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE VTC '22-Spring 2022/06 Research paper (international conference proceedings)
Publisher: IEEE
Suppression of Self-Noise Feedback in GAMP for Highly Correlated Large MIMO Detection
Ryota Tamaki, Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICC '22 2022/05/16 Research paper (international conference proceedings)
Publisher: IEEE
Grant-Free Access for Extra-Large MIMO Systems Subject to Spatial Non-Stationarity
Hiroki Iimori, Takumi Takahashi, Hyeon Seok Rou, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David Gonzalez G., Osvaldo Gonsa
Proc. of IEEE ICC '22 p. 1758-1762 2022/05/16 Research paper (international conference proceedings)
Publisher: IEEE
Low-Complexity Large MIMO Detection Based on Beam-Domain Local LMMSE Filters
Takumi Yoshida, Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICC '22 2022/05 Research paper (international conference proceedings)
Publisher: IEEE
Receive Beamforming for Gaussian Belief Propagation in Massive Multi-user MIMO for Reducing Fronthaul Bandwidth
Takanobu Doi, Jun Shikida, Kazushi Muraoka, Naoto Ishii, Daichi Shirase, Takumi Takahashi, Shinsuke Ibi
Proc. of IEEE WCNC '22 2022/04 Research paper (international conference proceedings)
Low-Complexity Large MIMO Detection via Layered Belief Propagation in Beam Domain
Takumi Takahashi, Antti Tolli, Shinsuke Ibi, Seiichi Sampei
IEEE Transactions on Wireless Communications Vol. 21 No. 1 p. 234-249 2022/01 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Negentropy-Aware Loss Function for Trainable Belief Propagation in Coded MIMO Detection
Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Kazushi Muraoka, Naoto Ishii, Seiichi Sampei
Proc. of IEEE GLOBECOM '21 2021/12 Research paper (international conference proceedings)
Publisher: IEEE
Grant-Free Access via Bilinear Inference for Cell-Free MIMO With Low-Coherence Pilots
Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, Wei Yu
IEEE Transactions on Wireless Communications Vol. 20 No. 11 p. 7694-7710 2021/11 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Iterative Demodulation and Decoding with Blind Channel Estimator for LoRa Modulation
Takuya Mihara, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Proc. of IEEE VTS APWCS '21 2021/08 Research paper (international conference proceedings)
Publisher: IEEE
A Study on Conversion of NLoS to LoS conditions using Sidelink in Smart Factory Environments
Akihiro Kubota, Seiichi Sampei, Takumi Takahashi
Proc. of IEEE VTS APWCS '21 2021/08 Research paper (international conference proceedings)
Publisher: IEEE
Uplink Signal Detection for Scalable Cell-Free Massive MIMO Systems With Robustness to Rate-Limited Fronthaul
Kengo Ando, Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas De Abreu
IEEE Access Vol. 9 p. 102770-102782 2021/07 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Bayesian Joint Channel and Data Estimation for Correlated Large MIMO with Non-orthogonal Pilots
Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICC '21 2021/06 Research paper (international conference proceedings)
Publisher: IEEE
Iterative Carrier Frequency Offset Estimation with Independent Component Analysis in BLE Systems
Masahiro Takigawa, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Transactions on Communications Vol. E104.B No. 1 p. 88-98 2021/01/01 Research paper (scientific journal)
Publisher: Institute of Electronics, Information and Communications Engineers (IEICE)
Low-complexity Large MIMO Detection via Gaussian Belief Propagation
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEICE ICETC '20 2020/12 Research paper (international conference proceedings)
Deep Unfolding-Aided Gaussian Belief Propagation for Correlated Large MIMO Detection
Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Kazushi Muraoka, Naoto Ishii, Seiichi Sampei
Proc. of IEEE GLOBECOM '20 2020/12 Research paper (international conference proceedings)
Publisher: IEEE
Bilinear Gaussian Belief Propagation for Large MIMO Channel and Data Estimation
Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE GLOBECOM '20 2020/12 Research paper (international conference proceedings)
3D Convolutional Neural Network-Aided Indoor Positioning Based on Fingerprints of BLE RSSI
Kodai Tasaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of APSIPA ASC '20 2020/12 Research paper (international conference proceedings)
Subspace Marginalized Belief Propagation for mmWave Overloaded MIMO Signal Detection
Takumi Takahashi, Shinsuke Ibi, Antti Tolli, Seiichi Sampei
Proc. of IEEE ICC '20 2020/06 Research paper (international conference proceedings)
Publisher: IEEE
Low Latency Interference Cancellation for Uplink URLLC Repetition Transmission
Osamu Nakamura, Yasuhiro Hamaguchi, Takumi Takahashi, Seiichi Sampei
Proc. of VTC '20-Spring 2020/05 Research paper (international conference proceedings)
Publisher: IEEE
Information-Optimum Approximate Message Passing for Quantized Massive MIMO Detection
Liwen Wang, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEEE Access Vol. 8 p. 200383-200394 2020 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Low-Complexity Beam-Domain Channel Estimation with Long-Term Statistics for Large MIMO Detection
Takumi Takahashi, Antti Tolli, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE GLOBECOM '19 2019/12 Research paper (international conference proceedings)
Publisher: IEEE
Machine Learning-Aided Indoor Positioning Based on Unified Fingerprints of Wi-Fi and BLE
Shunsuke Tsuchida, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of APSIPA ASC '19 2019/11 Research paper (international conference proceedings)
Publisher: IEEE
Channel Compensation and CPR for PDM System Based on Channel Hardening Effect
Seiji Tanaka, Takumi Takahashi, Shinsuke Ibi, Koji Igarashi, Seiichi Sampei
Proc. of ACP '19 2019/11 Research paper (international conference proceedings)
Uplink Multi-User Massive MIMO Using Gaussian BP in Highly Correlated Actual Environments
Tatsuki Okuyama, Kazushi Muraoka, Shinsuke Ibi, Takumi Takahashi, Satoshi Suyama, Jun Mashino, Seiichi Sampei, Yukihiko Okumura
Proc. of IEEE VTC '19-Fall 2019/09 Research paper (international conference proceedings)
Publisher: IEEE
A Study on Replica Generation Using LUT Based on Information Bottleneck for MF-GaBP in Massive MIMO Detection
Liwen Wang, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE VTC '19-Fall 2019/09 Research paper (international conference proceedings)
Publisher: IEEE
Concatenated Beam- and Antenna-domain Layered Belief Propagation for Large MIMO Detection
Takumi Takahashi, Antti Tolli, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ISWCS '19 2019/08 Research paper (international conference proceedings)
Publisher: IEEE
Layered Belief Propagation for Low-Complexity Large MIMO Detection Based on Statistical Beams
Takumi Takahashi, Antti Tolli, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICC '19 2019/05 Research paper (international conference proceedings)
Publisher: IEEE
Design of Adaptively Scaled Belief in Multi-Dimensional Signal Detection for Higher-Order Modulation
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEEE Transactions on Communications Vol. 67 No. 3 p. 1986-2001 2019/03 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Design of Criterion for Adaptively Scaled Belief in Iterative Large MIMO Detection
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Transactions on Communications Vol. E102.B No. 2 p. 285-297 2019/02/01 Research paper (scientific journal)
Publisher: Institute of Electronics, Information and Communications Engineers (IEICE)
Iterative Channel Estimation with Non-Orthogonal Pilot for Large MIMO Detection in PDA
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE ICSPCS '18 2018/12 Research paper (international conference proceedings)
Publisher: IEEE
Iterative Decoding Based on Concatenated Belief Propagation for CRC-Aided Polar Codes
Satoshi Tajima, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of APSIPA ASC '18 2018/11 Research paper (international conference proceedings)
Publisher: IEEE
Structured Random Codebook Design for GABP Iterative Detection in Massive SCMA
Keisuke Inagaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE VTC '18-Spring 2018/06 Research paper (international conference proceedings)
Publisher: IEEE
Design of adaptively scaled belief in large MIMO detection for higher-order modulation
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of APSIPA ASC '17 2017/12 Research paper (international conference proceedings)
Criterion of Adaptively Scaled Belief for PDA in Overloaded MIMO Channels
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of Asilomar Conference on Signals, Systems, and Computers '17 2017/10 Research paper (international conference proceedings)
On Normalization of Matched Filter Belief in GaBP for Large MIMO Detection
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of IEEE VTC '16-fall 2016/11 Research paper (international conference proceedings)
On Normalized Belief of Gaussian BP in Correlated MIMO Channels
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Proc. of ISITA '16 2016/11 Research paper (international conference proceedings)
A Study on Low-Complexity Mutual Information Prediction Using Vector Similarity Search for Multi-User MIMO Systems
Koji Hashimoto, Fuga Kobayashi, Takumi Takahashi, Shinsuke Ibi, Kazushi Muraoka, Takanobu Doi, Hideki Ochiai
IEICE Tech. Rep. Vol. 125 No. 88 p. 38-43 2925/06 Internal/External technical report, pre-print, etc.
A Study on Rate Control of Polar Codes in Multi-User MIMO Systems
Hiroaki Otsuka, Takumi Takahashi, Hideki Ochiai
IEICE Tech. Rep. Vol. 125 No. 88 p. 44-49 2025/06 Internal/External technical report, pre-print, etc.
A Study on Adaptive Code Rate Selection in Polar Coded OFDM for Highly Reliable Communications
Ginga Hashimoto, Takumi Takahashi, Hideki Ochiai
IEICE Tech. Rep. Vol. 125 No. 88 p. 50-55 2025/06 Internal/External technical report, pre-print, etc.
A Study on Millimeter-Wave MIMO-OFDM Channel Estimation Based on Tensor Decomposition with Deep Unfolding
Shoma Hara, Takumi Takahashi, Hideki Ochiai
IEICE Tech. Rep. Vol. 125 No. 88 p. 88-93 2025/06 Internal/External technical report, pre-print, etc.
A Study on Learning SNR Design for Generalized Approximate Message Passing with Deep Unfolding
Taiki Hirata, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
IEICE Tech. Rep. Vol. 125 No. 88 p. 94-99 2025/06 Internal/External technical report, pre-print, etc.
Polar coding with CRC-aided successive cancelation list decoder for complexity reduction of soft-decision forward error correction
Zhiyuan Song, Gakuto Kanematsu, Takumi Takahashi, Yohei Koganei, Koji Igarashi
IEICE Tech. Rep. Vol. 125 No. 59 p. 1-6 2025/06 Internal/External technical report, pre-print, etc.
Physics-informed Machine Learning for Statistics of Polarization-Dependent Nonlinear Effects in Optical Fiber Transmission Systems
Keisho Yamamoto, Takashi Taniguchi, Takumi Takahashi, Tadashi Wadayama, Koji Igarashi
IEICE Tech. Rep. Vol. 125 No. 59 p. 12-17 2025/06 Internal/External technical report, pre-print, etc.
Carrier Frequency Offset Calibration Method for Initial Access in Cell-Free Massive MIMO
Ryoji Kanzaki, Kohei Ueda, Takumi Takahashi, Koji Ishibashi
IEICE Tech. Rep. Vol. 125 No. 20 p. 24-29 2025/05 Internal/External technical report, pre-print, etc.
A Study on Three-Dimensional Wireless Indoor Localization Based on Quaternion-Domain Super MDS
Keigo Masuoka, Takumi Takahashi, Giuseppe Abreu, Hideki Ochiai
IEICE Tech. Rep. Vol. 124 No. 398 p. 68-73 2025/03 Internal/External technical report, pre-print, etc.
A Study on Extrinsic Value Generation of Iterative Signal Detection for Coded MIMO Systems With High-Order QAM
Fuga Kobayashi, Takahashi Takumi, Shinsuke Ibi, Ochiai Hideki
IEICE Tech. Rep. Vol. 124 No. 398 p. 62-67 2025/03 Internal/External technical report, pre-print, etc.
MCS Selection Based on Mutual Information Using Vector Similarity Search in Massive Multi-User MIMO-OFDM Systems
Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai, Kazushi Muraoka, Takanobu Doi
IEICE Tech. Rep. Vol. 124 No. 410 p. 193-193 2025/03 Internal/External technical report, pre-print, etc.
A Study on parallel LSTM-Aided GNSS Positioning with LTE Signal as Auxiliary Information
Kotaro Oda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 366 p. 104-109 2025/01 Internal/External technical report, pre-print, etc.
Blind Self-Interference Analog Canceller with Differential Delay for Backscatter Communications in the Presence of Frequency Selective Interference
Koichi Nishikawa, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 366 p. 174-179 2025/01 Internal/External technical report, pre-print, etc.
A Study on Model-Based Deep Learning of EP-Aided Turbo Equalization for Overloaded MIMO Detection
Haruki Sekiguchi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 366 p. 98-103 2025/01 Internal/External technical report, pre-print, etc.
Experimental Evaluation of Data-Driven Tuning for Weighted Least Squares of BLE-AoA-Based Indoor Localization
Ginji Ohashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 366 p. 43-48 2025/01 Internal/External technical report, pre-print, etc.
Bayesian Bilinear Inference-based Receiver Design for Time-Varying Millimeter-Wave MIMO Detection
Takumi Takahashi, Hiroki Iimori, Koji Ishibashi, Shinsuke Ibi, Giuseppe Abreu
IEICE Tech. Rep. Vol. 124 No. 311 p. 145-145 2024/12 Internal/External technical report, pre-print, etc.
A Study on Learning Stabilization in Deep Unfolding of Generalized Approximate Message Passing
Furudoi Tomoharu, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
SITA2024 2024/12 Internal/External technical report, pre-print, etc.
A Study on Autoencoder-Aided Data-Driven Tuning for Differential Linear Dispersion Code
Arata Kameda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 166 p. 78-83 2024/10 Internal/External technical report, pre-print, etc.
Blind Self-Interference Canceller with Differential Delay for Backscatter Communications
Koichi Nishikawa, Koichi Nishikawa, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 166 p. 84-89 2024/08 Internal/External technical report, pre-print, etc.
A study on data-driven tuning for sparse superposition code in massive NOMA
Shinya Oishi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
The Harris science review of Doshisha University Vol. 65 No. 2 p. 74-82 2024/07 Internal/External technical report, pre-print, etc.
A study on neural network with environment classification for GNSS positioning
Shugo Maruyama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
The Harris science review of Doshisha University Vol. 65 No. 2 p. 64-73 2024/07 Internal/External technical report, pre-print, etc.
A Study on Precoder Design in Time-Varying mmWave MIMO Detection via Expectation Propagation
Tomoharu Furudoi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
IEICE Tech. Rep. Vol. 124 No. 84 p. 162-167 2024/06 Internal/External technical report, pre-print, etc.
A Study on Mutual Information Prediction after Iterative Signal Detection for MCS Selection in Massive Multi-User MIMO-OFDM
Fuga Kobayashi, Takumi Takahashi, Sinsuke Ibi, Kazushi Muraoka, Takanobu Doi, Naoto Ishii, Hideki Ochiai
IEICE Tech. Rep. Vol. 124 No. 84 p. 168-173 2024/06 Internal/External technical report, pre-print, etc.
A Study on Low-Complexity LLR Calculation Based on Bilinear Inference for MIllimeter-Wave MIMO Systems Using DA-QSMmmWave MIMO Detection via Belief Propagation for DA-QSM
Keigo Masuoka, Takumi Takahashi, Shinkuke Ibi, Hideki Ochiai
IEICE Tech. Rep. Vol. 124 No. 84 p. 174-179 2024/06 Internal/External technical report, pre-print, etc.
A Study on Sparse Bayesian Learning Using Complex t-Prior for Beam-domain Channel Estimation in Massive Multi-User MIMO
Kengo Furuta, Takumi Takahashi, Hideki Ochiai
IEICE Tech. Rep. Vol. 124 No. 84 p. 235-240 2024/06 Internal/External technical report, pre-print, etc.
A Study on LSTM-Aided GNSS Positioning with LTE Signal as Auxiliary Information
Kotaro Oda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 84 p. 248-253 2024/06 Internal/External technical report, pre-print, etc.
A Study on Deep Unfolding of Successive Approximation Method in Indoor Positioning Based on BLE Angle of Arrival
Tomohiro Toyoda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 84 p. 254-259 2024/06 Internal/External technical report, pre-print, etc.
A Study on Deep Unfolding of Turbo Equalization in Overloaded MIMO Channels
Haruki Sekiguchi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 84 p. 260-265 2024/06 Internal/External technical report, pre-print, etc.
A Study on Wireless AutoEncoder for Coded MIMO Systems
Yuto Imahori, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 124 No. 84 p. 266-270 2024/06 Internal/External technical report, pre-print, etc.
A Study on Massive MIMO Channel Estimation Based on Sparse Bayesian Learning Using Hierarchical Model
Kengo Furuta, Takumi Takahashi, Kenta Ito, Shinsuke Ibi
IEICE Tech. Rep. Vol. 123 No. 340 p. 25-30 2024/01 Internal/External technical report, pre-print, etc.
A Study on EXIT Analysis of Expectation Propagation-Based IDD for Coded Large MIMO Detection
Takahide Saiki, Takumi Takahashi, Kenta Ito, Shinsuke Ibi
IEICE Tech. Rep. Vol. 123 No. 340 p. 13-18 2024/01 Internal/External technical report, pre-print, etc.
A Study on Autoencoder for Iterative Signal Detection in MIMO Channels
Yoshinori Ichihashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 340 p. 115-120 2024/01 Internal/External technical report, pre-print, etc.
Iterative Detection and Decoding of Blind Self-Interference Cancellation with Adaptive Differential Delay for IBFD
Koichi Nishikawa, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 340 p. 19-24 2024/01 Internal/External technical report, pre-print, etc.
A Study on Autoencoder-aided Data-Driven Tuning for Linear Dispersion Code
Arata Kameda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 340 p. 7-12 2024/01 Internal/External technical report, pre-print, etc.
A Study on Digital RF Aided Blind Self Interference Canceller with Adaptive Differential Delay for In-Band Full-Duplex
Nana Shimomura, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 308 p. 58-63 2023/12 Internal/External technical report, pre-print, etc.
Precoder Design for Time-Varying mmWave MIMO Detection via Expectation Propagation
Tomoharu Furudoi, Takumi Takahashi, Shinsuke Ibi
SITA2023 2023/11 Internal/External technical report, pre-print, etc.
Bayesian Receiver Design via Bilinear Inference for MU-MIMO Systems with Carrier Frequency Offsets under Frequency-Selective Fading
Kenta Ito, Takumi Takahashi, Koji Igarashi, Koji Ishibashi, Shinsuke Ibi
SITA2023 2023/11 Internal/External technical report, pre-print, etc.
A Study on Neural Network-Aided Prediction of Pseudo-Range Correction in GNSS Differential Positioning
Kohei Nishioka, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
The Harris science review of Doshisha University Vol. 64 No. 3 p. 145-154 2023/10
A Study on Bayesian Receiver Design for Uplink MU-MIMO Systems with Carrier Frequency Offsets
Kenta Ito, Takumi Takahashi, Koji Igarashi, Koji Ishibashi, Shinsuke Ibi
IEICE Tech. Rep. Vol. 123 No. 108 p. 70-75 2023/06 Internal/External technical report, pre-print, etc.
A Study on Blind Self-Interference Canceller with Adaptive Differential Delay for IBFD in Frequency-Selective Fading Channels
Koichi Nishikawa, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 76 p. 229-234 2023/06 Internal/External technical report, pre-print, etc.
A Study on Autoencoder for ICA-Aided MIMO Blind Signal Separation
Arata Kameda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 76 p. 235-240 2023/06 Internal/External technical report, pre-print, etc.
A Study on Neural Network-Aided Fine Tuning for Indoor Positioning based on BLE Angle of Arrival
Ginji Ohashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 76 p. 241-246 2023/06 Internal/External technical report, pre-print, etc.
A Study on Neural Network Aided Correction of Differential GNSS Positioning Using Auxiliary Base Station
Yuki Higashino, Yuki Higashino, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 76 p. 253-258 2023/06 Internal/External technical report, pre-print, etc.
A Study on Adaptively Scaled Belief of PDA Iterative Receiver for QAM-FTN Signaling
Rei Kajita, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 123 No. 76 p. 259-263 2023/06 Internal/External technical report, pre-print, etc.
A Study on Received Power Improvement in Indoor NLoS Region for 28-GHz Band Wireless System Using RIS
Jun Shirasaka, Seiichi Sampei, Takumi Takahashi
IEICE Tech. Rep. Vol. 122 No. 399 p. 167-172 2023/03 Internal/External technical report, pre-print, etc.
Machine Learning and Deep Learning-Aided Wireless Physical Layer Techniques
Shinsuke Ibi, Takumi Takahashi, Daichi Shirase, Takanobu Doi, Kazushi Muraoka, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 357 p. 72-77 2023/01 Internal/External technical report, pre-print, etc.
A Study on Evaluation of Non-Gaussianity in Two-Stage ICA-Aided Blind Signal Separation
Taisuke Nogami, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 357 p. 148-153 2023/01 Internal/External technical report, pre-print, etc.
A Study on Wireless Autoencoder for Data-Aided Channel Estimation
Yoshinori Ichihashi, Shinsuke Ibi, Takumi Takahashi, Takanobu Doi, Kazushi Muraoka, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 357 p. 154-159 2023/01 Internal/External technical report, pre-print, etc.
Deep Unfolding for Sparse Signal Recovery with Multiple Regularizers
Ryo Hayakawa, Takumi Takahashi
SIP Symposium 2022 2022/12 Internal/External technical report, pre-print, etc.
A Study on Outer Loop Link Adaptation in Massive MIMO with Multi-user Detection via Generalized Approximate Message Passing
Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi
IEICE Tech. Rep. Vol. 122 No. 311 p. 57-62 2022/12 Internal/External technical report, pre-print, etc.
A Study on Likelihood Information Combining for Beam-Domain Local LMMSE in Coded Massive MIMO Detection
Takumi Yoshida, Takumi Takahashi, Koji Ishibashi, Shinsuke Ibi, Seiichi Sampei
SITA2022 2022/12 Internal/External technical report, pre-print, etc.
Design of t-Distribution-based Denoiser for Discrete Vector Reconstruction
Daiki Wakumoto, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
SITA2022 2022/12 Internal/External technical report, pre-print, etc.
Parametric Bilinear Inference via Bernoulli-Gaussian Belief Propagation
Jaewoo Lee, Takumi Takahashi, Kenta Ito, Shinsuke Ibi, Seiichi Sampei
SITA2022 2022/12 Internal/External technical report, pre-print, etc.
A study on extended DLDC-aided blind signal detection in unified optical and wireless channels
Yoshikatsu Wakabayashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
The Harris science review of Doshisha University Vol. 63 No. 2 p. 113-122 2022/07 Internal/External technical report, pre-print, etc.
A Study on Indoor Location Estimation Based on Complex-Domain Super MDS Method Using Time Series Information
Yuya Nishi, Takumi Takahashi, Hiroki Iimori, Giuseppe Abreu, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 122 No. 73 p. 182-187 2022/06 Internal/External technical report, pre-print, etc.
A Study on LLR Synthesis Method for Beam-Domain Local LMMSE Detection in mmWave Large MIMO
Takumi Yoshida, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 122 No. 73 p. 162-167 2022/06 Internal/External technical report, pre-print, etc.
A study on Joint Channel and Data Estimation via Parametric Bilinear Inference for OTFS Transmission
Kengo Furuta, Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 122 No. 73 p. 188-193 2022/06 Internal/External technical report, pre-print, etc.
A Study on Expectation Propagation-based Iterative Detection for Overloaded MIMO in Coded Systems
Takuma Kobayashi, Takumi Takahashi, Kenta Ito, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 122 No. 73 p. 194-199 2022/06 Internal/External technical report, pre-print, etc.
A Study on Irregular Sparse Superposition Code for Massive NOMA Detection
Shinya Oishi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 73 p. 200-205 2022/06 Internal/External technical report, pre-print, etc.
A Study on Digital RF Aided Blind Self Interference Canceller for In-Band Full-Duplex
Nana Shimomura, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 73 p. 206-211 2022/06 Internal/External technical report, pre-print, etc.
A Study on Support Vector Classification-Aided Regression with Ensemble Learning for GNSS Positioning
Shugo Maruyama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 73 p. 212-217 2022/06 Internal/External technical report, pre-print, etc.
A Study on Data-Driven Fine-Tuning for ICA-Aided Blind Signal Separation
Taisuke Nogami, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 73 p. 218-223 2022/06 Internal/External technical report, pre-print, etc.
A Study on Self-Interference Canceller Based on Differential Coding in IBFD for Wireless IoT Communications
Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 122 No. 6 p. 24-29 2022/04 Internal/External technical report, pre-print, etc.
A Study on Parametric Bilinear Inference via Gaussian Belief Propagation
Kenta Ito, Takumi Takahashi, Koji Igarashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 122 No. 6 p. 35-40 2022/04 Internal/External technical report, pre-print, etc.
A Study on Received Power Improvement in NLoS Region for 28-GHz Band Indoor Wireless System Using Metal Reflector
Jun Shirasaka, Seiichi Sampei, Takumi Takahashi
IEICE Tech. Rep. Vol. 121 No. 391 p. 108-113 2022/03 Internal/External technical report, pre-print, etc.
A Study on Detecting Object Location Information in Indoor Environment Using Fixed 3D LiDAR
Mizuki Tanaka, Seiichi Sampei, Takumi Takahashi
IEICE Tech. Rep. Vol. 121 No. 391 p. 218-222 2022/03 Internal/External technical report, pre-print, etc.
A Study on Extended DLDC-Aided Joint Signal Processing in Unified Optical and Wireless Channels
Yoshikatsu Wakabayashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 121 No. 329 p. 81-86 2022/01 Internal/External technical report, pre-print, etc.
A Study on Deep Unfolding-Aided GNSS Positioning
Yuki Hayama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 121 No. 329 p. 87-92 2022/01 Internal/External technical report, pre-print, etc.
A Study on AoA Estimation-Aided Bayesian Receiver Design via Bilinear Inference for mmWave Large MIMO
Kenta Ito, Takumi Takahashi, Koji Igarashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 329 p. 167-172 2022/01 Internal/External technical report, pre-print, etc.
A Study on Bayesian Receiver Design via Deep Unfolding-Aided Bilinear Inference for Correlated Large MIMO
Ryota Tamaki, Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 329 p. 207-212 2022/01 Internal/External technical report, pre-print, etc.
A Study on Robust Referential AMP via Discrete Distribution Tracking for Correlated Large MIMO Signal Detection
Atsunori Shimamura, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 329 p. 213-218 2022/01 Internal/External technical report, pre-print, etc.
Deep Learning-Aided Belief Propagation for Large Multiuser MIMO Detection
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 327 p. 289-294 2022/01 Internal/External technical report, pre-print, etc.
Application of Soft-Decision FEC to Pre-Amplified Direct Detection with Four-Level Pulse Amplitude Modulation
Koji Igarashi, Takumi Takahashi
IEICE Tech. Rep. Vol. 121 No. 251 p. 9-14 2021/11 Internal/External technical report, pre-print, etc.
A Study on Receive Beamforming for Multi-User Detection with Trainable Gaussian Belief Propagation
Takanobu Doi, Jun Shikida, Kazushi Muraoka, Naoto Ishii, Daichi Shirase, Takumi Takahashi, Shinsuke Ibi
IEICE Tech. Rep. Vol. 121 No. 234 p. 86-91 2021/11 Internal/External technical report, pre-print, etc.
A study on secret key agreement scheme with mutual information-maximized vector quantization
Tomoyuki Higashide, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
The Harris science review of Doshisha University Vol. 62 No. 3 p. 157-166 2021/10 Internal/External technical report, pre-print, etc.
A study on large-scaled signal processing with multiple receivers for diversity receptions in GNSS positioning
Kousuke Kiyama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
The Harris science review of Doshisha University Vol. 62 No. 3 p. 167-174 2021/10 Internal/External technical report, pre-print, etc.
A Study on Bayesian Receiver Design via Bilinear Inference for Scalable Cell-Free Massive MIMO
Takumi Takahashi, Hiroki Iimori, Kengo Ando, Koji Ishibashi, Shinsuke Ibi, Giuseppe Abreu
IEICE Tech. Rep. Vol. 121 No. 210 p. 57-62 2021/10 Internal/External technical report, pre-print, etc.
Antenna Configuration and Robust Receiver Design for Scalable Cell-Free Massive MIMO with Capacity Limited Fronthaul
Kengo Ando, Hiroki Iimori, Giuseppe Abreu, Takumi Takahashi, Koji Ishibashi
IEICE Tech. Rep. Vol. 121 No. 153 p. 79-84 2021/08 Internal/External technical report, pre-print, etc.
A Study on Negentropy-Aware Deep Unfolding for Coded MIMO Detection via Gaussian Belief Propagation
Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Kazushi Muraoka, Takanobu Doi, Naoto Ishii, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 103 p. 86-91 2021/07 Internal/External technical report, pre-print, etc.
A Study on Low-Complexity Large MIMO Detection Based on Beam-Domain Local LMMSE Filters
Takumi Yoshida, Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 72 p. 127-132 2021/06 Internal/External technical report, pre-print, etc.
A Study on Recurrent Neural Network Aided GNSS Positioning
Kohei Nishioka, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 121 No. 72 p. 145-150 2021/06 Internal/External technical report, pre-print, etc.
A Study on Gaussian Belief Propagation Detector for High-Dimensional OTFS Modulation
Yuya Ito, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai, Noboru Osawa, Kosuke Yamazaki, Yoji Kishi
IEICE Tech. Rep. Vol. 121 No. 72 p. 151-156 2021/06 Internal/External technical report, pre-print, etc.
A Study on Deep Unfolding-Aided Belief Propagation for Error Correction Decoding of CRC Code
Qilin Zhang, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Tech. Rep. Vol. 121 No. 72 p. 157-162 2021/06 Internal/External technical report, pre-print, etc.
A Study on Phase-Noise-Aware LLR Calculation for Millimeter-wave MIMO Systems with High-Order Modulation
Daiki Wakumoto, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 72 p. 214-219 2021/06 Internal/External technical report, pre-print, etc.
A Study on Suppression of Self-noise Propagation in Gaussian BP and GAMP for Correlated MIMO Detection
Ryota Tamaki, Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sanpei
IEICE Tech. Rep. Vol. 121 No. 72 p. 220-225 2021/06 Internal/External technical report, pre-print, etc.
A Study on Deep Unfolding-Aided Quantized AMP for High-Dimensional Signal Detection
Atsunori Shimamura, Takumi Takahashi, Shinsuke Ibi, Seiichi Smapei
IEICE Tech. Rep. Vol. 121 No. 72 p. 226-231 2021/06 Internal/External technical report, pre-print, etc.
A Study on Quantization Noise-Aware Gaussian Belief Propagation for Large MIMO Detection with Low-Resolution ADCs
Itsuki Watanabe, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 121 No. 72 p. 232-237 2021/06 Internal/External technical report, pre-print, etc.
A Study on Trainable Gaussian Belief Propagation Using Deep Unfolding for Large NOMA Detection
R. Kume, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep. Vol. 120 No. 404 p. 240-245 2021/03
A Study on Gaussian Belief Propagation with Whitening Filter for Faster-than-Nyquist Transmissions
N. Yanai, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep. Vol. 120 No. 404 p. 13-18 2021/03
A Study on Conversion of NLoS conditions to LoS conditions using Sidelink in Smart Factory Environments
A, Kubota, S. Sampei, T. Takahashi
IEICE Tech. Rep. Vol. 120 No. 404 p. 88-93 2021/01
A Study on Self-Interference Canceller Based In-Band Full-Duplex using Software Defined Radio in Pilot Contamination Environments
K. Tomita, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep. Vol. 120 No. 322 p. 164-169 2021/01
A Study of Pilot Assignment Optimization Based on Statistical Beam Selection for Large Multi-User MIMO
Y. Ochi, T. Takahashi, S. Ibi, S. Sampei
IEICE Tech. Rep. Vol. 120 No. 322 p. 87-92 2021/01
A Study on Secret Key Agreement Scheme by Vector Quantization of Correlated MIMO Channel Matrix
T. Higashide, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep. Vol. 120 No. 322 p. 34-39 2021/01
A Study on Log Likelihood Ratio for Iterative Detection and Decoding of LoRa Modulation
T. Mihara, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep. Vol. 120 No. 322 p. 28-33 2021/01
A Study on Large-Scaled Signal Processing for Diversity Receptions in GNSS Positioning
K. Kiyama, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep. Vol. 120 No. 322 p. 17-22 2021/01
A Study on Higher-Order Large MIMO Detection via Concatenated Beam- and Antenna- Domain Layered BP
T. Takahashi, S. Ibi, S. Sampei
IEICE Tech. Rep. Vol. 120 No. 198 p. 79-84 2020/12
A Study on Joint Channel and Data Estimation via Belief Propagation for Correlated Large MIMO Systems
K. Ito, T. Takahashi, S. Ibi, S. Sampei
IEICE Tech. Rep Vol. 120 No. 249 p. 7-12 2020/11
A Study on Self-Interference Canceller Based on Differential Coding in In-Band Full-Duplex Communication in Pilot Contamination Environments
K. Tomita, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep Vol. 120 No. 130 p. 43-48 2020/08
A Study on Deep Unfolding-aided Gaussian Belief Propagation for Correlated Large MIMO Signal Detection
D. Shirase, T. Takahashi, S. Ibi, K. Muraoka, N. Ishii, S. Sampei
IEICE Tech. Rep Vol. 120 No. 89 p. 67-72 2020/07
A Study on Gaussian Belief Propagation for Sparse Superposition Code in Massive NOMA Detection
R. Kume, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep Vol. 120 No. 74 p. 133-138 2020/06
A Study on Iterative Detection and Decoding for LoRa Modulation
T. Mihara, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep Vol. 120 No. 74 p. 127-132 2020/06
A Study on GNSS Positioning using Neural Network
Y. Hayama, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep Vol. 120 No. 74 p. 121-126 2020/06
A Study on Trainable Gaussian Belief Propagation Using Deep Unfolding for Large MIMO Signal Detection
D. Shirase, T. Takahashi, S. Ibi, K. Muraoka, N. Ishii, S. Sampei
IEICE Tech. Rep Vol. 120 No. 74 p. 109-114 2020/06
A Study on Bilinear Gaussian Belief Propagation for Iterative Channel and Data Estimation in Large MIMO Systems
K. Ito, T. Takahashi, S. Ibi, S. Sampei
IEICE Tech. Rep Vol. 120 No. 74 p. 103-108 2020/06
A Study on DLDC-Aided Joint Signal Processing for Unified Optical and Wireless Channels
Y. Wakabayashi, S. Ibi, T. Takahashi, H. Iwai
IEICE Tech. Rep Vol. 120 No. 74 p. 73-77 2020/06
Effect of Interference Cancellation Considering Processing Delay for URLLC Repetition Transmission
Osamu Nakamura, Yasuhiro Hamaguchi, Takumi Takahashi, Seiichi Sampei
IEICE Tech. Rep Vol. 119 No. 448 p. 359-364 2020/03
LUT-based Approximate Message Passing Using Information Bottleneck for Massive MIMO Detection
Liwen Wang, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 119 No. 448 p. 81-86 2020/03
A Study on Indoor Localization for a Multiuser Environment based on Unified Fingerprint of Wi-Fi and Bluetooth Low Energy using Machine Learning
Shunsuke Tsuchida, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 119 No. 448 p. 177-182 2020/03
A Study on CNN based Indoor Localization with BLE with Compass Sensor
Kodai Tasaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 119 No. 378 p. 117-122 2020/01
A Study on Subspace Marginalized Belief Propagation for Overloaded MIMO Detection in LOS Channels
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
SITA2019 2019/11
A Study on Concatenated Beam- and Antenna- domain Layered BP for Large MIMO Detection
T. Takahashi, A. Tölli, S. Ibi, S. Sampei
IEICE Tech. Rep. Vol. 119 No. 108 p. 25-30 2019/07
A Study on Indoor Localization Based on Machine Learning with BLE with Compass Sensor
Kodai Tasaki, Takumi Takahashi, Shinsuke Ibi, Seiich Sampei
IEICE Tech. Rep Vol. 119 No. 108 p. 115-120 2019/07
Channel Estimation Using Long-term Channel Statistics for BP-based Large MIMO Detection
Takumi Takahashi, Antti Tolli, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 119 No. 8 p. 67-72 2019/04
A Study on Criterion of Adaptively Scaled Belief for GaBP in Massive SCMA
Keisuke Inagaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 118 No. 474 p. 19-24 2019/03
A Study on Layered Belief Propagation for Large MIMO Detection based on Statistical Beams
Takumi Takahashi, Antti Tolli, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 118 No. 474 p. 25-30 2019/03
A Study on Replica Generation Using Multi-layer LUT based on Information Bottleneck for MF-GaBP in Massive MIMO Detection
Liwen Wang, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 118 No. 435 p. 7-12 2019/01
A Study on GaBP IDD Structure for Massive SCMA
Keisuke Inagaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
SITA2018 2018/12
Gaussian Belief Propagation
Shinsuke Ibi, Takumi Takahashi
SITA2018 2018/12
A Study on Iterative Decoding Based on Belief Propagation for CRC Concatenated Polar Code
Satoshi Tajima, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 118 No. 101 p. 79-84 2018/06
A Study on Iterative Channel Estimation with Non-Orthogonal Pilot Sequence in Large MIMO Detection
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 118 No. 12 p. 31-36 2018/04
A Study on Adaptively Scaled Belief in Gaussian BP Detection for Higher-Order Higher-Dimensional MIMO Systems
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 117 No. 456 p. 271-276 2018/03
A Study on Criterion of Adaptively Scaled Belief for Large MIMO Detection Based on Belief Propagation
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep. Vol. 117 No. 396 p. 25-30 2018/01
Design of Adaptively Scaled Belief for Gaussian BP in Multi-Dimensional Signal Detection for Higher-Order Modulation
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
SITA2017 2017/11
A Study on Belief Propagation of Multi-Dimensional Signal Detection for Higher-Order Modulation
Shinsuke Ibi, Takumi Takahashi, Seiichi Sampei
IEICE Tech. Rep Vol. 117 No. 175 p. 61-66 2017/08
Study on Random codebook Design and its constraint for Massive SCMA Detection
Keisuke Inagaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 117 No. 103 p. 185-190 2017/06
A Study on Criterion of Adaptively Scaled Belief for PDA in Overloaded MIMO Channels
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Tech. Rep Vol. 117 No. 11 p. 5-10 2017/04
Design of Criterion for Adaptively Scaled Belief in Iterative MIMO Detection
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
SITA2016 2016/12
A Study on Normalization of A-priori Information for Belief Propagation in Correlated Large MIMO Channels
Takumi Takahashi, Shinsuke Ibi, Takeo Ohgane, Seiichi Sampei
IEICE Tech. Rep Vol. 116 No. 110 p. 53-58 2016/06
User Activity, Channel, CFO, and Data Estimation for Initial Access of Cell-Free MIMO Systems,
R. Kanzaki, K. Ueda, T. Takahashi, K. Ishibashi
IEEE Communication Theory Workshop (IEEE CTW) 2025/05
Joint Channel, CFO, and Data Estimation Based on Bayesian Bilinear Inference for MU-MIMO-OFDM Systems
Kenta Ito, Takumi Takahashi, Koji Ishibashi, Shinsuke Ibi, Hideki Ochiai
IEICE Soc. Conf. 2025/03
A Study on Deep Unfolding of Tensor Decomposition and its Loss Function Design for Millimeter-Wave MIMO-OFDM Channel Estimation
Shoma Hara, Takumi Takahashi, Hideki Ochiai
IEICE Soc. Conf. 2025/03
Development of Ultimate Wireless Systems Beyond Classical Design
Koji Ishibashi, Koya Sato, Naoki Ishikawa, Takumi Takahashi
IEICE Gen. Conf. 2025/03
A Study on Autoencoder for Multi-Dimensional Signal Detection Based on Expectation Propagation
Shinsuke Ibi, Takumi Takahashi, Kazushi Muraoka, Takanobu Doi
IEICE Gen. Conf. 2025/03
A Study on Expectation Propagation-Based IDD for Coded MIMO Systems with High-Order Modulation
Fuga Kobayashi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
MIKA 2024/10
A Study on Performance Comparison of Spatial Multiplexing and Spatial Modulation When Using Suboptimal Demodulation
Keigo Masuoka, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
MIKA 2024/10
A Comparative Study on Suppression Mechanism of Self-Noise Propagation in Gaussian Belief Propagation and Expectation Propagation
Tomoharu Furudoi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai
MIKA 2024/10
A Study on Autoencoder for Iterative Signal Detection
Shinsuke Ibi, Takumi Takahashi, Muraoka Kazushi, Takanobu Doi
IEICE Soc. Conf. 2024/09
A Study on Low-Complexity OTFS Signal Detection Based on Local LMMSE Output Combining
Takumi Yoshida, Takumi Takahashi, Koji Ishibashi
IEICE Gen. Conf. 2024/03
A Study on Low-Complexity Detection via Gaussian Belief Propagation for Diversity Achieving-QSM
Keigo Masuoka, Takumi Takahashi, Shinsuke Ibi
IEICE Gen. Conf. 2024/03
A Study on Low-Complexity Time-Varying mmWave MIMO Detection via Vector Approximate Message Passing
Tomoharu Furudoi, Takumi Takahashi, Shinsuke Ibi
IEICE Gen. Conf. 2024/03
A Study on Data-Driven Tuning for Weighted Least Square in Indoor Positioning Based on BLE Angle of Arrival
Ginji Ohashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2024/03
A Study on GNSS Positioning with LTE Signal as Auxiliary Information via LSTM
Kotaro Oda, Yuki Higashino, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2024/03
A Study on Successive Approximation Method in Indoor Position Estimation Based on BLE Angle of Arrival
Tomohiro Toyoda, Ginji Ohashi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2024/03
A Study on the Design of Wireless AutoEncoder for Coded MIMO Communications
Yuto Imahori, Arata Kameda, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2024/03
A Study on Deep Unfolding for Turbo Equalization-based MIMO Signal Detection
Haruki Sekiguchi, Rei Kajita, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2024/03
Tutorial Session "Frontiers of Probabilistic Inference for Communications"
Takumi Takahashi, Hiroki Iimori, Koya Sato
The 38th SIP Symposium 2023/11/06
Multi-user Detection via Non-iterative MF-PIC for Uplink Multi-user Massive MIMO
Takanobu Doi, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi
IEICE Soc. Conf. 2023/09
A Study on Sparse Superposition Code in OTFS transmissions
Shinya Oishi, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2023/03
A Study on Deep Unfolding for PDA-Based Signal Detector in FTN Transmissions
Rei Kajita, Qilin Zhang, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2023/03
A Study on Neural Network-Aided Indoor Positioning based on BLE Angle of Arrival Information
Ginji Ohashi, Kousei Ono, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2023/03
A Study on Two-Stage Blind Self-Interference Canceller for IBFD in Frequency-Selective Fading Channels
Koichi Nishikawa, Nana Shimomura, Shinsuke Ibi Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2023/03
Multi-Dimentional Signal Processing Based on Message Passing Algorithm
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Kansai-section Joint Convention of Institues of Electorical Engineering 2022/11
System Level Evaluation of Generalized Approximate Massage Passing in Multi-User Massive MIMO
Takanobu Doi, Jun Shikida, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi
IEICE Soc. Conf. 2022/09
Study on Propagation Path Control in Indoor Environment using Beam Splitting in Intelligent Reflecting Surfaces
Kohei Aotsuka, Seiichi Sampei, Takumi Takahashi
IEICE Gen. Conf. 2022/03
A Study on Deep Unfolding-Aided Gaussian Belief Propagation for Correlated MIMO Detection with Low-Resolution ADCs
Yuka Tamura, Atsunori Shimamura, Itsuki Watanabe, Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2022/03
A Study on Spreading Matrix of Sparse Superposition Code for Massive NOMA Detection
Shinya Oishi, Ryuichi Kume, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2022/03
A Study on Self-Interference Canceller Based on Digital RF for In-Band Full-Duplex
Nana Shimomura, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2022/03
A Study on Deep Unfolding-Aided Independent Component Analysis for MIMO Blind Signal Separation
Taisuke Nogami, Qilin Zhang, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2022/03
A Study on Ensemble Learning-Aided GNSS Positioning
Shugo Maruyama, Yuki Hayama, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
IEICE Gen. Conf. 2022/03
Fundamentals of Deep Unfolding-aided Belief Propagation
Shinsuke Ibi, Takumi Takahashi, Hisato Iwai
Kansai-section Joint Convention of Institues of Electorical Engineering 2021/12
Trainable Gaussian Belief Propagation Initialized by MMSE Filters
T. Doi, J. Shikida, K. Muraoka, N. Ishii, D. Shirase, T. Takahashi, S. Ibi, S. Sampei
IEICE Soc. Conf. 2021/09
DMRS Generation Schemes for Frequency-Domain Spectrum Shaping with Spectrum Extension
Osamu Nakamura, Yasuhiro Hamaguchi, Seiichi Sampei, Takumi Takahashi
IEICE Soc. Conf. 2021/09
Bilinear Inference for Grant-Free Access in Cell-Free MIMO Systems
H. Iimori, T.Takahashi, K. Ishibashi, G. Abreu
IEICE Gen. Conf. 2021/03
A Study on Deep Unfolding-aided Error Correction Decoding for CRC Code
Q. Zhang, S. Ibi, T. Takahashi, H. Iwai
IEICE Gen. Conf. 2021/03
A Study on Approximated LLR in Presence of Phase Noise for MIMO Systems with High-Order Modulation
D. Wakumoto, T. Takahashi, S. Ibi, S. Sampei
IEICE Gen. Conf. 2021/03
Evaluation of Trainable Gaussian Belief Propagation Using 3GPP CDL Channel Model
T. Doi, J. Shikida, K. Muraoka, N. Ishii, D. Shirase, T. Takahashi, S. Ibi, S. Sampei
IEICE Gen. Conf. 2021/03
A study on Low-complexity mmWave Massive MIMO Detection Based on Beam-domain Local LMMSE filter
T. Yoshida, D. Shirase, T.Takahashi, S. Ibi, S. Sampei
IEICE Gen. Conf. 2021/03
A Study on Bussgang decomposition-based GaBP for Large MIMO Detection with Low-precision ADCs
I. Watanabe, T. Takahashi, S. Ibi, S. Sampei
IEICE Gen. Conf. 2021/03
A Study on Deep Unfolding-Aided Quantized Look-up Table-based AMP for Massive MIMO Detection
A. Shimamura, T. Takahashi, S. Ibi, S. Sampei
IEICE Gen. Conf. 2021/03
A Study on Improved Generalized Approximate Message Passing for Correlated Large MIMO Detection
R. Tamaki, K. Ito, T. Takahashi, S. Ibi, S. Sampei
IEICE Gen. Conf. 2021/03
A Study on Coverage Enhancement for 28 GHz Band in Indoor Environment Using Reflectors
J. Shirasaka, S. Sampei, T. Takahashi
IEICE Gen. Conf. 2021/03
A Study on the Creation of 3D Map in Indoor Environment Using 2D LiDAR
M. Tanaka, S, Sampei, T. Takahashi
IEICE Gen. Conf. 2021/03
A Study on Beam Allocation to Suppress Interference in High Dense Environment
T. Kaino, S.Sampei, T. Takahashi
IEICE Gen. Conf. 2021/03
Fundamentals of Multi-Dimensional Signal Detection of Expectation Propagation
S. Ibi, T. Takahashi, H. Iwai
IEICE Gen. Conf. 2021/03
A Study on Iterative Joint Channel and Data Estimation in Correlated Large MIMO Channels
K. Ito, T. Takahashi, S. Ibi, S. Sampei
IEICE Soc. Conf. 2020/09
A Study on Reference Signal Reduction for DMRS Sharing
O. Nakamura, Y. Hamaguchi, T. Takahashi, S. Sampei
IEICE Soc. Conf. 2020/09
A Study on Mutual Message Initialization in BiGAMP for Large MIMO Detection with Non-orthogonal Pilots
Kenta Ito, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2020/03
A Study on Path Planning for Autonomous Robot using a Spatiotemporal Graph in Indoor Space under Cellular Environment
Koki Imanichi, Seiichi Sampei, Takumi Takahashi
IEICE Gen. Conf. 2020/03
A Study on Prevention of Radio Leakage and Improvement of Area Coverage in Smart Factory
Akihiro Kubota, Seiichi Sampei, Takumi Takahashi
IEICE Gen. Conf. 2020/03
Orthogonal Pilot Assignment Based on Optimal Beam Selection for Large-scale Multi-user MIMO
Yuichi Ochi, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2020/03
Belief Propagation for Large MIMO Signal Detection
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
Kansai-section Joint Convention of Institues of Electorical Engineering 2019/11
ransmission Performance of URLLC Using Interference Cancellation Considering Processing Delay
Osamu Nakamura, Yasuhiro Hamaguchi, Takumi Takahashi, Seiichi Sampei
IEICE Soc. Conf. 2019/09
A Study on Subspace Marginalized Belief Propagation for Overloaded MIMO in LOS Channels
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Soc. Conf. 2019/09
Uplink Multi-User Massive MIMO using Gaussian BP in Highly Correlated Channels
Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Shinsuke. Ibi, Takumi Takahashi, Seiichi Sampei
IEICE Soc. Conf. 2019/09
A Study on EXIT Chart-Aided Design of GaBP IDD Structure for Massive SCMA
Keisuke Inagaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Soc. Conf. 2018/09
A Study on Iterative Channel Estimation for Non-Orthogonal Pilot Sequence in Large MIMO Detection
Shoma Ito, takumi takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2018/03
A Study on CRC-Aided Iterative Decoding Based on Belief Propagation for Polar Code
Satoshi Tajima, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2018/03
A Study on Criterion of Adaptively Scaled Belief for PDA in Correlated MIMO Channels
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2017/03
A Study on Criterion of Codebook Selection for Massive SCMA
Keisuke Inagaki, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2017/03
A Study on Normalization of A-priori Information in Belief Propagation for Large MIMO Detector
Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei
IEICE Gen. Conf. 2016/03
無線受信装置及びその方法
土井 隆暢, 村岡 一志, 石井 直人, 高橋 拓海, 衣斐 信介
出願日:2021/09/03
受信装置および復調のためのパラメータ生成方法
村岡 一志, 土井 隆暢, 石井 直人, 高橋 拓海, 三瓶 政一, 衣斐 信介
出願日:2021/04/14
コンピュータシステム及びそのための方法
村岡 一志, 石井 直人, 高橋 拓海, 衣斐 信介
出願日:2020/04/14
無線受信装置
村岡 一志, 石井 直人, 高橋 拓海, 三瓶 政一, 衣斐 信介
出願日:2020/04/14
データベースに基づくチャネル品質推定
土井 隆暢, 村岡 一志, 石井 直人, 高橋 拓海, 衣斐 信介
出願日:2024/03/28
Vector Similarity Search-Based MCS Selection for Iterative Signal Detection in Massive Multi-User MIMO-OFDM Systems
Kobayashi Fuga, Takahashi Takumi, Ibi Shinsuke, Ochiai Hideki, Muraoka Kazushi, Doi Takanobu, Ishii Naoto
IEEE Wireless Communications and Networking Conference, WCNC 2025/05/09
Learning Stabilization in Deep Unfolding of Generalized Approximate Message Passing
Furudoi Tomoharu, Takahashi Takumi, Ibi Shinsuke, Ochiai Hideki
IEEE Wireless Communications and Networking Conference, WCNC 2025/05/09
Joint Channel, CFO, and Data Estimation via Bayesian Inference for Multi-User MIMO-OFDM Systems
Ito Kenta, Takahashi Takumi, Ishibashi Koji, Igarashi Koji, Ibi Shinsuke
IEEE Transactions on Wireless Communications Vol. 24 No. 3 p. 1898-1915 2025/03
Sparse Bayesian Learning Using Complex t-Prior for Beam-Domain Massive MIMO Channel Estimation
Furuta Kengo, Takahashi Takumi, Ochiai Hideki
IEEE Open Journal of the Communications Society Vol. 5 p. 5905-5920 2024/09/10
Bayesian Bilinear Inference for Joint Channel Tracking and Data Detection in Millimeter-Wave MIMO Systems
Takahashi Takumi, Iimori Hiroki, Ishibashi Koji, Ibi Shinsuke, De Abreu Giuseppe Thadeu Freitas
IEEE Transactions on Wireless Communications Vol. 23 No. 9 p. 11136-11153 2024/09/01
Joint Channel and Data Estimation via Parametric Bilinear Inference for OTFS Demodulation
Ito Kenta, Takahashi Takumi, Furuta Kengo, Ibi Shinsuke, Thadeu Freitas De Abreu Giuseppe
IEEE Open Journal of the Communications Society Vol. 5 p. 6090-6105 2024/09/01
Bilinear Gaussian Belief Propagation for Massive MIMO Detection with Non-Orthogonal Pilots
Ito Kenta, Takahashi Takumi, Ibi Shinsuke, Sampei Seiichi
IEEE Transactions on Communications Vol. 72 No. 2 p. 1045-1061 2023/10/18
A Study on Adaptively Scaled Belief Propagation in Large MIMO Detection
高橋 拓海
