Akira Kawai

According to our database, Akira Kawai authored at least 29 papers between 2019 and 2026.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2026

LLMs Capture Emotion Labels, Not Emotion Uncertainty: Distributional Analysis and Calibration of Human-LLM Judgment Gaps.

Keito Inoshita, Xiaokang Zhou, Akira Kawai, Katsutoshi Yada

CoRR, April, 2026

Multi-Stage Evolutionary Model Merging with Meta Data Driven Curriculum Learning for Sentiment-Specialized Large Language Modeling.

Keito Inoshita, Xiaokang Zhou, Akira Kawai

CoRR, January, 2026

Mode-Resolved Longitudinal Power and MDL Monitoring in Multi-Mode Fiber Transmission.

Minami Takahashi, Takeo Sasai, Megumi Hoshi, Masanori Nakamura, Akira Kawai, Kohki Shibahara, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Crosstalk Reduction in Bidirectional Transceiver Using Phase-Sensitive Parametric Amplifier.

Shimpei Shimizu, Takushi Kazama, Akira Kawai, Katsuaki Higashimori, Masanori Nakamura, Masashi Abe, Koji Enbutsu, Kazumitsu Sakamoto, Yosuke Fujino, Takeshi Umeki, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Multiband Transmission Supported by Wavelength Conversion and Parametric Amplification.

Shimpei Shimizu, Kosuke Kimura, Akira Kawai, Masashi Abe, Shunya Konno, Takushi Kazama, Koji Enbutsu, Takahiro Kashiwazaki, Megumi Hoshi, Masanori Nakamura, Fukutaro Hamaoka, Takeshi Umeki, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

QR-Decomposition Based Recursive Least Squares Low-Complexity MDL-Tolerant MIMO Equalization for High-Symbol-Rate Coupled SDM Channel Transmissions.

Kohki Shibahara, Akira Kawai, Megumi Hoshi, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Numerical and Experimental Investigation of Multiband WDM transmission Employing Backward Raman Pumping over Hybrid SMF-MCF Links.

Kosuke Kimura, Shimpei Shimizu, Megumi Hoshi, Kohki Shibahara, Akira Kawai, Masanori Nakamura, Fukutaro Hamaoka, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Over-3-Tb/s/λ Free-Space MIMO Transmission Under Diffraction with Geometric Mode-Division Multiplexing.

Akira Kawai, Shimpei Shimizu, Katsuaki Higashimori, Kohki Shibahara, Megumi Hoshi, Masanori Nakamura, Kazumitsu Sakamoto, Yosuke Fujino, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

2025

CIEGAD: Cluster-Conditioned Interpolative and Extrapolative Framework for Geometry-Aware and Domain-Aligned Data Augmentation.

Keito Inoshita, Xiaokang Zhou, Akira Kawai, Katsutoshi Yada

CoRR, December, 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, May, 2025

Poster: A Proposal to Detect Driving Danger Signs Using Probe Data.

Akira Kawai, Asuya Sakioka, Yoshihiro Niimi

Proceedings of the IEEE Vehicular Networking Conference, 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, Yuta Shiratori, Hiroshi Yamazaki, Hiroyuki Takahashi, Takeshi Umeki, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

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, Yuta Shiratori, Hiroshi Yamazaki, Hiroyuki Takahashi, Soichi Endo, Takemi Hasegawa, Koichi Maeda, Shigehiro Takasaka, Ryo Nagase, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

Real-Time SDM-MIMO Transmission with 12-Coupled SDM Channels Over Field-Installed Fibre Cable.

Kohki Shibahara, Akira Kawai, Megumi Hoshi, Manabu Arikawa, Kohei Hosokawa, Takaya Maeda, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Yusuke Yamada, Kazuhide Nakajima, Soichi Endo, Takemi Hasegawa, Koichi Maeda, Shigehiro Takasaka, Ryo Nagase, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

Inter-Core Crosstalk Estimation in Uni- and Bi-Directional Multiband WDM Transmissions.

Kosuke Kimura, Shimpei Shimizu, Megumi Hoshi, Kohki Shibahara, Akira Kawai, Masanori Nakamura, Fukutaro Hamaoka, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

Vertically Coded Probabilistic Shaping Enabling MDL-Tolerant Over-14.5- Tb/S/λ Spatial MIMO Transmission.

Akira Kawai, Kohki Shibahara, Masanori Nakamura, Megumi Hoshi, Takayuki Kobayashi, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Yusuke Yamada, Kazuhide Nakajima, Munehiko Nagatani, Hitoshi Wakita, Yuta Shiratori, Hiroshi Yamazaki, Hiroyuki Takahashi, Soichi Endo, Takemi Hasegawa, Ryo Nagase, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

SDM Transmission Technologies Enabling Over-10-Tb/S SDM-MIMO Signals.

Akira Kawai, Kohki Shibahara, Masanori Nakamura, Megumi Hoshi, Takayuki Kobayashi, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Yusuke Yamada, Kazuhide Nakajima, Munehiko Nagatani, Hitoshi Wakita, Yuta Shiratori, Hiroshi Yamazaki, Hiroyuki Takahashi, Soichi Endo, Takemi Hasegawa, Koichi Maeda, Shigehiro Takasaka, Ryo Nagase, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

Evaluation Method of Adaptive SDM-MIMO Equaliser Based on the Quantitative Coupled Channel Dynamics.

Megumi Hoshi, Kohki Shibahara, Akira Kawai, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Kazuhide Nakajima, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

2024

Adaptive Segmentation Enhanced Asynchronous Federated Learning for Sustainable Intelligent Transportation Systems.

Xiaokang Zhou, Wei Liang, Akira Kawai, Kaoru Fueda, Jinhua She, Kevin I-Kai Wang

IEEE Trans. Intell. Transp. Syst., July, 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, Hiroshi Yamazaki, Hiroyuki Takahashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

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, Wei Liang, Kevin I-Kai Wang

IEEE Trans. Intell. Transp. Syst., August, 2023

Spatio-Temporal Graph Convolutional Networks via View Fusion for Trajectory Data Analytics.

Wenya Hu, Weimin Li, Xiaokang Zhou, Akira Kawai, Kaoru Fueda, Quan Qian, Jianjia Wang

IEEE Trans. Intell. Transp. Syst., April, 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, Takeshi Hoshida

Proceedings of the Optical Fiber Communications Conference and Exhibition, 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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

2022

Resolution-aware Smoothing and Backward Filter Convergence for Accurate Optical Performance Monitoring.

Akira Kawai, Takayuki Kobayashi, Masanori Nakamura, Yutaka Miyamoto

Proceedings of the 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), 2022

4-Dimensional IQ Characteristic Estimation for Polarization-multiplexed Coherent Transceivers.

Akira Kawai, Masanori Nakamura, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

2019

A Physical Strength Measurement and Analysis System for Elderly People Using Motion Sensors.

Akira Kawai, Shinichi Taniguchi, Hui Li LI, Shizue Izumi

Proceedings of the 10th IEEE Annual Ubiquitous Computing, 2019