A Physical Strength Measurement and Analysis System for Elderly People Using Motion Sensors. - Akira Kawai; Shinichi Taniguchi; Hui Li LI; Shizue Izumi (UEMCON, 2019)

4-Dimensional IQ Characteristic Estimation for Polarization-multiplexed Coherent Transceivers. - Akira Kawai; Masanori Nakamura; Takayuki Kobayashi; Yutaka Miyamoto (OFC, 2022)

Resolution-aware Smoothing and Backward Filter Convergence for Accurate Optical Performance Monitoring. - Akira Kawai; Takayuki Kobayashi; Masanori Nakamura; Yutaka Miyamoto (OECC/PSC, 2022)

Remote Digital Holographic Characterization of a 75.2 km Few-Mode Fiber without Reference Wave Transfer. - Akira Kawai; Shimpei Shimizu; Kohki Shibahara; Takayuki Kobayashi; Yutaka Miyamoto (OFC, 2023)

103-ch. 132-Gbaud PS-QAM Signal Inline-amplified Transmission with 14.1-THz Bandwidth Lumped PPLN-based OPAs over 400-km G.652.D SMF. - Takayuki Kobayashi; Shimpei Shimizu; Masanori Nakamura; Takushi Kazama; Masashi Abe; Takeshi Umeki; Akira Kawai; Fukutaro Hamaoka; Munehiko Nagatani; Hiroshi Yamazaki; Yutaka Miyamoto (OFC, 2023)

38.4-Tbps Inline-amplified Transmission Using PPLN-based Optical Parametric Amplifier over 6 THz within L- and U-bands. - Shimpei Shimizu; Takayuki Kobayashi; Akira Kawai; Takushi Kazama; Masanori Nakamura; Koji Enbutsu; Takahiro Kashiwazaki; Masashi Abe; Takeshi Umeki; Yutaka Miyamoto; Tomoyuki Kato; Yu Tanaka; et al. (OFC, 2023)

Spatio-Temporal Graph Convolutional Networks via View Fusion for Trajectory Data Analytics. - Wenya Hu; Weimin Li 001; Xiaokang Zhou; Akira Kawai; Kaoru Fueda; Quan Qian; Jianjia Wang (IEEE Trans. Intell. Transp. Syst., 2023)

Graph Attention Network With Spatial-Temporal Clustering for Traffic Flow Forecasting in Intelligent Transportation System. - Yan Chen; Tian Shu; Xiaokang Zhou; Xuzhe Zheng; Akira Kawai; Kaoru Fueda; Zheng Yan 002; Wei Liang 006; Kevin I-Kai Wang (IEEE Trans. Intell. Transp. Syst., 2023)

Low-Complexity 4D×D MIMO Equalizer Enabling 2.6-Tb/s/λ SDM Signal Reception over Dynamic Four-Coupled-Core Cabled Transmission Line. - Akira Kawai; Kohki Shibahara; Masanori Nakamura; Takayuki Kobayashi; Takayoshi Mori; Ryota Imada; Taiji Sakamoto; Yusuke Yamada; Kazuhide Nakajima; Yutaka Miyamoto (OFC, 2024)

C+L+U-Band 14.85-THz WDM Transmission Over 80-km-Span G.654.E Fiber with Hybrid PPLN-OPA/EDFA U-Band Lumped Repeater Using 144-Gbaud PCS-QAM Signals. - Takayuki Kobayashi; Shimpei Shimizu; Akira Kawai; Masanori Nakamura; Masashi Abe; Takushi Kazama; Takeshi Umeki; Munehiko Nagatani; Kosuke Kimura; Hitoshi Wakita; Yuta Shiratori; Fukutaro Hamaoka; et al. (OFC, 2024)

Adaptive Segmentation Enhanced Asynchronous Federated Learning for Sustainable Intelligent Transportation Systems. - Xiaokang Zhou; Wei Liang 006; Akira Kawai; Kaoru Fueda; Jinhua She; Kevin I-Kai Wang (IEEE Trans. Intell. Transp. Syst., 2024)

Full C-band 3317-km 12-Coupled-Core-Fiber Transmission with 266.2-Tbps Capacity Using Field-Installed Fiber-Optic Cable. - Kohki Shibahara; Akira Kawai; Megumi Hoshi; Masanori Nakamura; Takayuki Kobayashi; Ryota Imada; Takayoshi Mori; Taiji Sakamoto; Yusuke Yamada; Kazuhide Nakajima; Munehiko Nagatani; Hitoshi Wakita; et al. (OFC, 2025)

27-THz ISRS-Supported Transmission Over 1040 km in S+C+L+U and Extreme Longer-Wavelength Band. - Shimpei Shimizu; Kosuke Kimura; Akira Kawai; Masashi Abe; Shunya Konno; Takushi Kazama; Masanori Nakamura; Fukutaro Hamaoka; Koji Enbutsu; Takahiro Kashiwazaki; Munehiko Nagatani; Hitoshi Wakita; et al. (OFC, 2025)

Poster: A Proposal to Detect Driving Danger Signs Using Probe Data. - Akira Kawai; Asuya Sakioka; Yoshihiro Niimi (VNC, 2025)

Programmable Photonic Unitary Processor Enables Parametrized Differentiable Long-Haul Spatial Division Multiplexed Transmission. - Mitsumasa Nakajima; Kohki Shibahara; Kohei Ikeda; Akira Kawai; Masaya Notomi; Yutaka Miyamoto; Toshikazu Hashimoto (CoRR, 2025)