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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SIP, IT | 2025-01-29 16:35 |
Yamaguchi | Kaikyou-messe (Primary: On-site, Secondary: Online) |
Study on adaptability improvement of early HARQ retransmission control method for low-latency communications Eiji Okamoto (NITech), Manabu Mikami, Hitoshi Yoshino (SoftBank) |
[more] | |
| IN, NS, CS, NV (Joint) |
2024-09-05 12:40 |
Miyagi | Tohoku University | [Special Invited Talk]
Overview of non-terrestrial networks and application of optical satellite data relay system Eiji Okamoto (NITech)  CS2024-38 |
Non-terrestrial networks (NTNs) are wireless networks that transmit and receive data via communication devices installed... [more] | CS2024-38 p.1 |
| OCS, OFT, LSJ (Joint) [detail] |
2024-08-23 11:35 |
Hokkaido | Real-Time Demonstration of Automatic Laser Frequency Adjustments for Intra-Data Center Coherent Transmissions Yukinobu Nakajima, Akira Masuda, Hiroki Taniguchi, Shuto Yamamoto, Yoshiaki Sone, Seiji Okamoto, Takeo Sasai, Etsushi Yamazaki (NTT) OCS2024-23 |
For intra-data center coherent transmission, it is effective to use lasers without wavelength lockers in order to reduce... [more] | OCS2024-23 pp.28-31 |
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| RCC, RCS, SeMI, NS, SR, RISING (Joint) |
2024-07-17 10:00 |
Hokkaido | Hokkaido Citizens Activities Promotion Center (Primary: On-site, Secondary: Online) |
Study on IEEE 802.15.3e Application in Multiple-Spot Millimeter-Wave High-Capacity Transport Transmission System Using Gazebo Simulator Haruki Shimizu (NITech), Keitarou Kondou, Yozo Shoji (NICT), Eiji Okamoto (NITech) RCS2024-84 |
To realize an ultra-coverage expansion that Beyond 5G aims for at low cost, the construction of a data-carrying relay ne... [more] | RCS2024-84 pp.1-6 |
| RCC, RCS, SeMI, NS, SR, RISING (Joint) |
2024-07-18 13:05 |
Hokkaido | Hokkaido Citizens Activities Promotion Center (Primary: On-site, Secondary: Online) |
[Invited Talk]
Research and Standardization Trends in In-Vehicle Networks Toward the Era of Advanced Autonomous Driving Manabu Kagami, Atsushi Kanno, Eiji Okamoto (NIT) |
[more] | |
| CS | 2024-07-11 13:28 |
Nagasaki | Center for Tsushima engagement | Study on high-efficiency information reconciliation for continuous-variable quantum key distribution using raptor code Ryuto Terada, Takumi Kamiya (nitech), Hiroyuki Endo (NICT), Eiji Okamoto (nitech), Masahide Sasaki, Mikio Hujiwara (NICT) CS2024-18 |
Quantum key distribution can establish cryptographic keys securely against all physically possible attacks, but it is re... [more] | CS2024-18 pp.43-48 |
| CS | 2024-07-11 13:30 |
Nagasaki | Center for Tsushima engagement | Study on improvement of polar code-based information reconciliation for continuous-variable quantum key distribution by revealing received soft values Takumi Kamiya, Ryuto Terada (nitech), Hiroyuki Endo (NICT), Eiji Okamoto (nitech), Masahide Sasaki, Mikio Fujiwara (NICT) CS2024-19 |
Quantum key distribution is attracting attention because it enables secure establishment of random numbers between trans... [more] | CS2024-19 pp.49-54 |
| RCS | 2024-06-19 10:00 |
Okinawa | (Primary: On-site, Secondary: Online) |
Study on Machine Learning-based Dangerous Objects Detection in 300GHz Sub-THz Imaging Using Optical Image Training Data Shoma Shibata, Eiji Okamoto (nitech) RCS2024-28 |
Sub-THz waves are expected to be introduced in Beyond 5G/6G, which is currently under research and development. Sub-THz ... [more] | RCS2024-28 pp.1-6 |
| RCS | 2024-06-19 10:10 |
Okinawa | (Primary: On-site, Secondary: Online) |
Study on Image Quality Enhancement Using Two-Step Adaptive Gamma Correction Method in 300 GHz Sub-THz Imaging Tsubasa Kato, Eiji Okamoto (Nitech) RCS2024-29 |
The 300 GHz wave in the sub-THz band has a wavelength of approximately 1 mm, enabling imaging with a high resolution of ... [more] | RCS2024-29 pp.7-12 |
| RCS | 2024-06-20 14:15 |
Okinawa | (Primary: On-site, Secondary: Online) |
Study on Physical-Layer Encrypted Relay Transmission Method Using Group Key for Distributed Terminal Cooperative Communication Keita Ito, Eiji Okamoto (NITech) RCS2024-62 |
Multiple-input multiple-output (MIMO) techniques are commonly used to improve frequency efficiency and channel capacity.... [more] | RCS2024-62 pp.203-208 |
| RCS | 2024-04-25 14:20 |
Hiroshima | (Primary: On-site, Secondary: Online) |
A Study on Adaptive Beamwidth Control Method Using Vehicular Sensor and Map Information in 5G Millimeter-Wave Vehicle Communication System Tatkumi Eboshita, Eiji Okamoto (NITech) RCS2024-2 |
Millimeter-wave bands are considered for use in 5G because of its wide bandwidth, and it is expected to become an import... [more] | RCS2024-2 pp.7-12 |
| RCS, SR, SRW (Joint) |
2024-03-15 09:45 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Consideration of Space Network Utilization in 6G Eiji Okamoto (NITech) RCS2023-282 SR2023-105 SRW2023-69 |
Non-terrestrial networks (NTNs) are expected to be an effective means of “super coverage extension” to remote areas on t... [more] | RCS2023-282 SR2023-105 SRW2023-69 p.131(RCS), p.63(SR), p.96(SRW) |
| SS | 2024-03-07 11:25 |
Okinawa | (Primary: On-site, Secondary: Online) |
Development of a Framework for Implementing OTP Applications with Rust Reiji Okamoto, Yoshiaki Takata (KUT) SS2023-51 |
Concurrent programming with the green threads in the programming language Rust is very costly for reasons such as the po... [more] | SS2023-51 pp.13-18 |
| SIP, IT, RCS | 2024-01-18 17:35 |
Miyagi | (Primary: On-site, Secondary: Online) |
A Study on Decoding Performance Improvement by Using Non-binary LDPC Codes in Outer Channel Coding-Concatenated Chaos Coded Modulation Ryo Tozawa, Seiya Yamashita, Eiji Okamoto (NITech), Horiike Naoto, Tetsuya Yamamoto (Panasonic) IT2023-55 SIP2023-88 RCS2023-230 |
With the rapid expansion of the Internet of Things (IoT) in recent years, the need to improve the confidentiality of wir... [more] | IT2023-55 SIP2023-88 RCS2023-230 pp.133-138 |
| NS, RCS (Joint) |
2023-12-15 10:55 |
Fukuoka | Kyushu Institute of Technology Tobata campus, and Online (Primary: On-site, Secondary: Online) |
A Study on Complexity Reduction of Signal Processing for Object Detection Using Sub-Terahertz Waves Taisei Kurahashi, Eiji Okamoto (NITech) RCS2023-196 |
Terahertz waves, which are expected to be used in 6G, have both a wide bandwidth and object transparency, and are expect... [more] | RCS2023-196 pp.100-105 |
| RCS, SAT (Joint) |
2023-08-31 16:20 |
Nagano | Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
[Encouragement Talk]
Comparative study of channel coding methods for performance improvement in next-generation optical satellite data relay system Eiji Okamoto, Yuma Yamashita (NITech), Yohei Satoh, Mitsuhiro Nakadai, Takamasa Itahashi, Shiro Yamakawa (JAXA) SAT2023-42 |
Optical satellite data relay systems which send high-capacity data observed by low-orbit user satellites to geostationar... [more] | SAT2023-42 pp.41-45 |
| SeMI, RCS, RCC, NS, SR (Joint) |
2023-07-12 10:50 |
Osaka | Osaka University Nakanoshima Center + Online (Primary: On-site, Secondary: Online) |
A study on the application of Raptor codes in a relay transmission model for large-capacity data utilizing V2X Haruki Shimizu (NITech), Keitarou Kondou, Yozo Shoji (NICT), Eiji Okamoto (NITech) RCS2023-81 |
High-frequency radio waves, such as millimeter waves, which enable high-speed, large-capacity communications between rad... [more] | RCS2023-81 pp.13-18 |
| AP, SANE, SAT (Joint) |
2023-07-12 14:20 |
Hokkaido | The Citizen Activity Center (Primary: On-site, Secondary: Online) |
Construction of high-efficient information reconciliation method using fixed bit polar codes for continuous-variable quantum key distribution Kensuke Yamaura (Nitech), Hiroyuki Endo (NICT), Eiji Okamoto (Nitech), Morio Toyoshima, Mikio Fujiwara, Masahide Sasaki (NICT) SAT2023-11 |
Continuous Variable Quantum Key Distribution (CV-QKD) is being studied for various applications, including satellite-to-... [more] | SAT2023-11 pp.7-12 |
| AP, SANE, SAT (Joint) |
2023-07-12 14:40 |
Hokkaido | The Citizen Activity Center (Primary: On-site, Secondary: Online) |
Improvement of key generation efficiency of free-space optical physical layer cryptography using polar code Ryuto Terada (Nitech), Hiroyuki Endo (NICT), Kensuke Yamaura, Eiji Okamoto (Nitech), Mitsuo Kitamura (NICT), Ryosuke Shimizu (UEC), Morio Toyoshima, Mikio Hujiwara, Masahide Sasaki (NICT) SAT2023-12 |
Quantum key distribution is known as a secure key sharing technology against all physically possible attacks. However, t... [more] | SAT2023-12 pp.13-18 |
| SeMI, RCS, RCC, NS, SR (Joint) |
2023-07-13 09:25 |
Osaka | Osaka University Nakanoshima Center + Online (Primary: On-site, Secondary: Online) |
A Study on Complexity Reduction of Bit Assignment and Performance Improvement by Channel Code Concatenation in Chaos Modulation Ryo Tozawa, Yuuki Mori, Seiya Yamashita, Eiji Okamoto (NITech), Tetsuya Yamamoto (Panasonic) RCS2023-86 |
In recent years, with the rapid increase of Internet of Things (IoT) devices in industries, healthcare, and other fields... [more] | RCS2023-86 pp.33-38 |
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