Asia-Pacific Conference on Communications (APCC) 2025
November 26th - 28th, 2025 | I-site Namba, Osaka Metropolitan University, Osaka, Japan
Osaka - Japan
November 26th - 28th, 2025 | I-site Namba, Osaka Metropolitan University, Osaka, Japan
Tutorials
Multishape Radio: Harnessing Physical Properties of Electromagnetic Waves for 6G and Beyond Wireless Communications
Abstract
As 6G networks evolve towards higher frequency bands including sub-terahertz (sub-THz) and centimeter-wave spectrum, the shortened wavelengths enable exploitation of physical properties of electromagnetic waves that have remained largely underutilized in conventional wireless systems. This tutorial introduces the revolutionary concept of “multishape radio,” which leverages unique electromagnetic wave characteristics such as non-diffracting propagation, orbital angular momentum (OAM), and curved main lobe propagation to enhance wireless communication performance beyond the limitations of tradi-tional plane-wave beamforming. The manipulation of sub-THz electromagnetic waves using reconfigurable intelligent sur-faces (RIS) enables more customized beam control and the application of Airy and Bessel beams, which have not been ex-tensively utilized until now. This tutorial provides comprehensive coverage of three key multishape radio technologies: Bessel beams for non-diffracting and self-healing transmission, OAM beams for high-capacity spatial multiplexing, and Airy beams for interference-free communications with curved main lobe propagation characteristics. The tutorial bridges theoretical foundations with experimental validation, featuring real-world demonstrations in sub-THz bands that showcase breakthrough achievements including terabit-class wireless transmission (1.58 Tb/s OAM multiplexing), enhanced coverage through self-healing propagation (15.9 dB power improvement with Bessel beams), and interference-free multi-stream communications (949.34 Gb/s with 8 Airy beams). Attendees will gain practical insights into lens design, beam generation techniques, and system implementation strategies that enable next-generation wireless networks to harness the full potential of electromagnetic wave physics. This tutorial will provide the audience with an integrated understanding of the latest sub-THz experimental systems, practical beam generation strategies, and pathways for deployment in 6G network architecture.
Biography
Doohwan Lee, NTT, Inc., Yokosuka, Kanagawa Japan: Dr. Doohwan Lee is a Senior Distinguished Researcher at NTT Network Innovation Laboratories. From 2012 to 2014, he was a full-time lecturer at the University of Tokyo. From 2016 to 2018, he was a part-time lecturer at Kanagawa University. He received the Best Paper Award and Best Technical Exhibi-tion Award from the IEICE Software Radio in 2011, the IEICE Communications Society Excellent Paper Award in 2012, the IEICE SRW Young Researcher’s Award in 2016, the Best Technical Exhibition Award from SmartCom 2014, the Best Paper Award from SmartCom 2016, the Best Paper Award and Special Technical Award in Smart Radio from IEICE Smart Radio in 2017, the Distinguished Contributions Award from the IEICE Communications Society in 2021, the ComEX Best Letter Award in 2023, the Radio Achievement Award from the Ministry of Internal Affairs and Communica-tions in Japan in 2024, the ARIB Telecom System Technology Award in 2025, and the Maejima Hisoka Award in 2025. He has served as general co-chair of many workshops held at the IEEE ICC, GLOBECOM, PIMRC, and VTC. He was a co-chair of the Membership Development Committee (MDC) of the IEEE ComSoC APB in 2022 and 2023.
Hirofumi Sasaki, NTT, Inc., Yokosuka, Kanagawa, Japan: Dr. Hirofumi is a Distinguished Researcher at NTT Net-work Innovation Laboratories. He has been engaged in research on high capacity wireless communications in millimeter-wave regions. His research interests include mm-Wave, THz, and optical communications, electromagnetic information theory, THz waveguide design, and digital signal processing for wireless communications. He received the Best Paper Award from the Institute of Electronics, Information and Communication Engineers (IEICE) SmartCom 2016, the Best Paper Award and Special Technical Award in Smart Radio from the IEICE Smart Radio in 2017, the IEICE Young Re-searcher's Award in 2017, and the ARIB Telecom System Technology Award in 2025. He served as the secretary in IEEE GLOBECOM 2019 Workshop on High Capacity Point-to-Point Wireless Communications (HCPtP) and in IEEE GLOBECOM 2020, 2022 and 2023 Workshops on High Capacity Wireless Communications (HCWC).
Yasunori Yagi, NTT, Inc., Yokosuka, Kanagawa, Japan: Mr. Yasunori Yagi is a researcher engineer at NTT Network Innovation Laboratories. He received B.E. and M.E. degrees in electrical engineering from the Tokyo University of Science in 2015 and 2017, respectively. Since joining NTT in 2017, he has engaged in research on high-capacity and terahertz wire-less communication. His research interests include wireless communications, microwave, millimeter-wave, terahertz-wave circuits, and digital signal processing. He received the Communication Express (ComEx) Best Letter Award from the IE-ICE in 2022, the Young Researcher's Award from the IEICE in 2024, and the ARIB Telecom System Technology Award in 2025. He was secretary of the IEEE PIMRC 2022 Workshop on Electromagnetic Information Theory (EMIT 2022) and served as Technical Program Committee Member for IEEE PIMRC 2023 Workshop on Electromagnetic Information Theo-ry and IEEE VTC2023-Fall. His expertise includes advanced antenna design and experimental validation of novel beam manipulation techniques in sub-THz bands.
Important Dates
Special Session Proposal Submission: |
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May. 7th, 2025 (Extended) |
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Manuscript Submission: |
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Jul. 31st, 2025 (FIRM) |
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Tutorial Proposal Submission: |
Jul. 31st, 2025 |
Notification of Acceptance: |
Sep. 10th, 2025 |
Camera-ready Submission: |
Oct. 15th, 2025 |
Conference Date: |
Nov. 26th-28th, 2025 |
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