On normalized belief of Gaussian BP in correlated large MIMO channels. - Takumi Takahashi; Shinsuke Ibi; Takeo Ohgane; Seiichi Sampei (ISITA, 2016)

Natural Language Dialog System Considering Speaker's Emotion Calculated from Acoustic Features. - Takumi Takahashi; Kazuya Mera; Tang Ba Nhat; Yoshiaki Kurosawa; Toshiyuki Takezawa (IWSDS, 2016)

On Normalization of Matched Filter Belief in GaBP for Large MIMO Detection. - Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (VTC Fall, 2016)

Criterion of adaptively scaled belief for PDA in overloaded MIMO channels. - Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (ACSSC, 2017)

Design of adaptively scaled belief in large MIMO detection for higher-order modulation. - Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (APSIPA, 2017)

Iterative Decoding Based on Concatenated Belief Propagation for CRC-Aided Polar Codes. - Satoshi Tajima; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (APSIPA, 2018)

Text and Image Synergy with Feature Cross Technique for Gender Identification: Notebook for PAN at CLEF 2018. - Takumi Takahashi; Takuji Tahara; Koki Nagatani; Yasuhide Miura; Tomoki Taniguchi; Tomoko Ohkuma (CLEF (Working Notes), 2018)

Integrating Entity Linking and Evidence Ranking for Fact Extraction and Verification. - Motoki Taniguchi; Tomoki Taniguchi; Takumi Takahashi; Yasuhide Miura; Tomoko Ohkuma (FEVER@EMNLP, 2018)

Augmented jump: a backpack multirotor system for jumping ability augmentation. - Takumi Takahashi; Keisuke Shiro; Akira Matsuda; Ryo Komiyama; Hayato Nishioka; Kazunori Hori; Yoshio Ishiguro; Takashi Miyaki; Jun Rekimoto (UbiComp, 2018)

Iterative Channel Estimation with Non-Orthogonal Pilot for Large MIMO Detection in PDA. - Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (ICSPCS, 2018)

Instrudive: A Music Visualization System Based on Automatically Recognized Instrumentation. - Takumi Takahashi; Satoru Fukayama; Masataka Goto (ISMIR, 2018)

Structured Random Codebook Design for GABP Iterative Detection in Massive SCMA. - Keisuke Inagaki; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (VTC Spring, 2018)

Design Guideline for Developing Safe Systems that Apply Electricity to the Human Body. - Michinari Kono; Takumi Takahashi; Hiromi Nakamura; Takashi Miyaki; Jun Rekimoto (ACM Trans. Comput. Hum. Interact., 2018)

CLER: Cross-task Learning with Expert Representation to Generalize Reading and Understanding. - Takumi Takahashi; Motoki Taniguchi; Tomoki Taniguchi; Tomoko Ohkuma (MRQA@EMNLP, 2019)

Machine Learning-Aided Indoor Positioning Based on Unified Fingerprints of Wi-Fi and BLE. - Shunsuke Tsuchida; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (APSIPA, 2019)

Low-Complexity Beam-Domain Channel Estimation with Long-Term Statistics for Large MIMO Detection. - Takumi Takahashi; Antti Tölli; Shinsuke Ibi; Seiichi Sampei (GLOBECOM, 2019)

Layered Belief Propagation for Low-Complexity Large MIMO Detection Based on Statistical Beams. - Takumi Takahashi; Antti Tölli; Shinsuke Ibi; Seiichi Sampei (ICC, 2019)

Concatenated Beam- and Antenna-domain Layered Belief Propagation for Large MIMO Detection. - Takumi Takahashi; Antti Tölli; Shinsuke Ibi; Seiichi Sampei (ISWCS, 2019)

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 (VTC Fall, 2019)

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 (VTC Fall, 2019)

Design of Criterion for Adaptively Scaled Belief in Iterative Large MIMO Detection. - Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (IEICE Trans. Commun., 2019)

Design of Adaptively Scaled Belief in Multi-Dimensional Signal Detection for Higher-Order Modulation. - Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (IEEE Trans. Commun., 2019)

3D Convolutional Neural Network-Aided Indoor Positioning Based on Fingerprints of BLE RSSI. - Kodai Tasaki; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (APSIPA, 2020)

Bilinear Gaussian Belief Propagation for Large MIMO Channel and Data Estimation. - Kenta Ito; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (GLOBECOM, 2020)

Deep Unfolding-Aided Gaussian Belief Propagation for Correlated Large MIMO Detection. - Daichi Shirase; Takumi Takahashi; Shinsuke Ibi; Kazushi Muraoka; Naoto Ishii; Seiichi Sampei (GLOBECOM, 2020)

Subspace Marginalized Belief Propagation for mmWave Overloaded MIMO Signal Detection. - Takumi Takahashi; Shinsuke Ibi; Antti Tölli; Seiichi Sampei (ICC, 2020)

Low Latency Interference Cancellation for Uplink URLLC Repetition Transmission. - Osamu Nakamura; Yasuhiro Hamaguchi; Takumi Takahashi; Seiichi Sampei (VTC Spring, 2020)

Information-Optimum Approximate Message Passing for Quantized Massive MIMO Detection. - Liwen Wang; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (IEEE Access, 2020)

A Study on Conversion of NLoS to LoS conditions using Sidelink in Smart Factory Environments. - Akihiro Kubota; Seiichi Sampei; Takumi Takahashi (APWCS, 2021)

Iterative Demodulation and Decoding with Blind Channel Estimator for LoRa Modulation. - Takuya Mihara; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai (APWCS, 2021)

Quantifying Appropriateness of Summarization Data for Curriculum Learning. - Ryuji Kano; Takumi Takahashi; Toru Nishino; Motoki Taniguchi; Tomoki Taniguchi; Tomoko Ohkuma (EACL, 2021)

Multi-span Extractive Reading Comprehension Without Multi-span Supervision. - Takumi Takahashi; Motoki Taniguchi; Tomoki Taniguchi; Tomoko Ohkuma (ECIR (2), 2021)

Negentropy-Aware Loss Function for Trainable Belief Propagation in Coded MIMO Detection. - Daichi Shirase; Takumi Takahashi; Shinsuke Ibi; Kazushi Muraoka; Naoto Ishii; Seiichi Sampei (GLOBECOM, 2021)

Bayesian Joint Channel and Data Estimation for Correlated Large MIMO with Non-orthogonal Pilots. - Kenta Ito; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (ICC, 2021)

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, 2021)

Iterative Carrier Frequency Offset Estimation with Independent Component Analysis in BLE Systems. - Masahiro Takigawa; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (IEICE Trans. Commun., 2021)

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 001 (IEEE Trans. Wirel. Commun., 2021)

An Efficient Vector-valued Belief Propagation Decoder for Quadrature Spatial Modulation. - Hyeon Seok Rou; Giuseppe Thadeu Freitas de Abreu; Takumi Takahashi (IEEECONF, 2022)

Referential Approximate Message Passing for Quantized Large MIMO Detection. - Atsunori Shimamura; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (GLOBECOM, 2022)

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 González G.; Osvaldo Gonsa (ICC, 2022)

Suppression of Self-Noise Feedback in GAMP for Highly Correlated Large MIMO Detection. - Ryota Tamaki; Kenta Ito; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (ICC, 2022)

Low-Complexity Large MIMO Detection Based on Beam-Domain Local LMMSE Filters. - Takumi Yoshida; Daichi Shirase; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (ICC, 2022)

Soft-decision FEc Designed for Optically Preamplified PAM4 Direct Detection. - Koji Igarashi; Takumi Takahashi; Seiichi Sampei; Kyo Inoue (OECC/PSC, 2022)

Gaussian Belief Propagation for mmWave Large MIMO Detection with Low-Resolution ADCs. - Itsuki Watanabe; Takumi Takahashi; Shinsuke Ibi; Antti Tölli; Seiichi Sampei (SPAWC, 2022)

Phase-Noise-Aware LLR Calculation for mmWave MIMO Systems with High-Order Modulation. - Daiki Wakumoto; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (VTC Spring, 2022)

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 (WCNC, 2022)

Joint Activity and Channel Estimation for Extra-Large MIMO Systems. - Hiroki Iimori; Takumi Takahashi; Koji Ishibashi; Giuseppe Thadeu Freitas de Abreu; David González G.; Osvaldo Gonsa (IEEE Trans. Wirel. Commun., 2022)

Low-Complexity Large MIMO Detection via Layered Belief Propagation in Beam Domain. - Takumi Takahashi; Antti Tölli; Shinsuke Ibi; Seiichi Sampei (IEEE Trans. Wirel. Commun., 2022)

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 (ICASSP, 2023)

AoA Estimation-Aided Bayesian Receiver Design via Bilinear Inference for mmWave Massive MIMO. - Kenta Ito; Takumi Takahashi; Koji Igarashi; Shinsuke Ibi; Seiichi Sampei (ICC, 2023)

Few-shot Named Entity Recognition with Supported and Dependent Label Representations. - Yasuhide Miura; Takumi Takahashi (IJCNLP (Findings), 2023)

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 (VTC Fall, 2023)

Uplink Signal Detection via Look-Up Table-Based AMP for Massive MIMO Systems. - Atsunori Shimamura; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (IEEE Access, 2023)

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 Trans. Wirel. Commun., 2023)

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 Trans. Commun., 2023)

Blind Self-Interference Analog Canceller with Differential Delay for Backscatter Communications. - Koichi Nishikawa; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai (APSIPA, 2024)

Data-Driven Tuning for Weighted Least Squares of BLE-AoA-based Indoor Localization. - Ginji Ohashi; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai (APSIPA, 2024)

Joint Channel and Data Estimation via Bayesian Parametric Bilinear Inference for OTFS Transmission. - Kengo Furuta; Takumi Takahashi; Kenta Ito; Shinsuke Ibi (CCNC, 2024)

Concatenated Structure of EP and Turbo Equalizer for Overloaded Massive MIMO Detection. - Takuma Kobayashi; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (CCNC, 2024)

Data-Driven Tuning of Deep Unfolding-Aided Blind Signal Separation for Short Data Length. - Taisuke Nogami; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai (CCNC, 2024)

Low-Complexity Cross-Domain Iterative Detection Based on Local LMMSE Filters for OTFS. - Takumi Yoshida; Takumi Takahashi; Koji Ishibashi (ICC Workshops, 2024)

IRS-Aided Over-the-Air Image Processing: Single Antenna Imaging. - Sora Tahira; Takuya Fujihashi; Takumi Takahashi; Shunsuke Saruwatari; Takashi Watanabe 001 (PIMRC, 2024)

Precoder Design for Time-Varying mmWave MIMO Detection Based on Expectation Propagation. - Tomoharu Furudoi; Takumi Takahashi; Shinsuke Ibi; Hideki Ochiai (VTC Fall, 2024)

Sparse Bayesian Learning Using Complex t-Prior for Massive Multi-User MIMO Channel Estimation. - Kengo Furuta; Takumi Takahashi; Hideki Ochiai (VTC Fall, 2024)

Point Cloud Geometry and Attribute Transmission over MIMO Channels. - Naruto Miyata; Takuya Fujihashi; Takumi Takahashi; Shunsuke Saruwatari; Takashi Watanabe 001 (VTC Fall, 2024)

Pilotless Self-Interference Canceller of IBFD for BLE in the Presence of Fractional Delay Paths. - Koichi Nishikawa; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai (VTC Fall, 2024)

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 (WCNC, 2024)

Discrete-Valued Signal Estimation via Low-Complexity Message Passing Algorithm for Highly Correlated Measurements. - Tomoharu Furudoi; Takumi Takahashi; Shinsuke Ibi; Hideki Ochiai (CoRR, 2024)

Differential Active Self-Interference Cancellation for Asynchronous In-Band Full-Duplex GFSK. - Shinsuke Ibi; Takumi Takahashi; Hisato Iwai (IEICE Trans. Commun., 2024)

Sparse Bayesian Learning Using Complex t-Prior for Beam-Domain Massive MIMO Channel Estimation. - Kengo Furuta; Takumi Takahashi; Hideki Ochiai (IEEE Open J. Commun. Soc., 2024)

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 J. Commun. Soc., 2024)

Bilinear Gaussian Belief Propagation for Massive MIMO Detection With Non-Orthogonal Pilots. - Kenta Ito; Takumi Takahashi; Shinsuke Ibi; Seiichi Sampei (IEEE Trans. Commun., 2024)

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 Trans. Wirel. Commun., 2024)

Kiite World: Socializing Map-Based Music Exploration Through Playlist Sharing and Synchronized Listening. - Kosetsu Tsukuda; Takumi Takahashi; Keisuke Ishida; Masahiro Hamasaki; Masataka Goto (MMM (2), 2025)

Learning Stabilization in Deep Unfolding of Generalized Approximate Message Passing. - Tomoharu Furudoi; Takumi Takahashi; Shinsuke Ibi; Hideki Ochiai (WCNC, 2025)

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 (WCNC, 2025)

Bayesian Iterative Demodulation and Decoding for LoRa Modulation in Fast Rayleigh Fading Channels. - Shinsuke Ibi; Takuya Mihara; Takumi Takahashi; Hisato Iwai (IEICE Trans. Commun., 2025)

EXIT Chart Analysis of Expectation Propagation-Based Iterative Detection and Decoding. - Fuga Kobayashi; Takumi Takahashi; Shinsuke Ibi; Hideki Ochiai (IEEE Open J. Commun. Soc., 2025)

Physics-Aware Sparse Signal Recovery Through PDE-Governed Measurement Systems. - Tadashi Wadayama; Koji Igarashi; Takumi Takahashi (CoRR, 2025)

Physics-Aware Decoding for Communication Channels Governed by Partial Differential Equations. - Tadashi Wadayama; Koji Igarashi; Takumi Takahashi (CoRR, 2025)

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 Trans. Wirel. Commun., 2025)

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 Trans. Wirel. Commun., 2025)

Quaternion Domain Super MDS for 3D Localization. - Keigo Masuoka; Takumi Takahashi; Giuseppe Thadeu Freitas de Abreu; Hideki Ochiai (CoRR, 2025)