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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 241  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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)
 [more]
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
RCS 2023-06-14
10:10
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
A Study on performance improvement of uplink multi user radio encypted MIMO transmission scheme using accurate probability calculation
Seiya Yamashita, Yuki Mori, Ryo Tozawa, Eiji Okamoto (NITech), Tetsuya Yamamoto (Panasonic) RCS2023-32
Multi-user MIMO (MU-MIMO) is known as an effective multiple access method, and we have previously proposed a multi-user ... [more] RCS2023-32
pp.25-30
RCS 2023-06-14
15:35
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
A Study on Accurate Beam Tracking Method Using Vehicle Location Information in 5G Millimeter Wave Vehicle Communication System
Takumi Eboshita, Eiji Okamoto (NIT) RCS2023-41
Millimeter-wave band having a wide bandwidth is being used in 5G, and is expected to be an important means of communicat... [more] RCS2023-41
pp.75-80
ITS, IEE-ITS 2023-03-13
15:05
Chiba Nihon Univ., Funabashi Campus
(Primary: On-site, Secondary: Online)
A Study on Reducing Transmission Waiting Time Using Non-Orthogonal Multiple Access in UAV Uplink Communication System
Daiki Ikeda, Eiji Okamoto (NITech) ITS2022-80
Recently, a multi-stage relay transmission system using unmanned aerial vehicles (UAV) has been proposed to efficiently ... [more] ITS2022-80
pp.6-11
ITS, IEE-ITS 2023-03-13
15:30
Chiba Nihon Univ., Funabashi Campus
(Primary: On-site, Secondary: Online)
A Study on Coverage Extension Using Cooperative Relay Transmission in Uplink V2N Communication
Akihiro Sonoda, Eiji Okamoto (NITech) ITS2022-81
Recently, cooperative relay transmission has been considered as a technology to extend the coverage of vehicular to netw... [more] ITS2022-81
pp.12-17
IT, RCS, SIP 2023-01-24
10:25
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
A Study on Bit Error Rate Improvement of Chaos Modulation By Bit Assignment Using Nonlinear Optimization Algorithm
Ryo Tozawa, Keisuke Asano, Takumi Abe, Kenta Kato, Eiji Okamoto (NIT) IT2022-30 SIP2022-81 RCS2022-209
In recent years, the number of Internet of things (IoT) devices has increased and they are used in industrial and medica... [more] IT2022-30 SIP2022-81 RCS2022-209
pp.7-12
RCS, AP, UWT
(Joint)
2022-11-15
10:20
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
A Study on Performance Improvement of Uplink Multi-User Chaos MIMO Transmission Scheme
Kenta Kato, Keisuke Asano, Takumi Abe, Yuki Mori, Eiji Okamoto (NIT), Tetsuya Yamamoto (Panasonic) RCS2022-157
Internet of things (IoT) terminals have spread rapidly in recent years, and multi-user multiple-input multiple-output (M... [more] RCS2022-157
pp.13-18
RCS, AP, UWT
(Joint)
2022-11-15
11:00
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
[Encouragement Talk] A Study on Performance Improvement of Chaos Modulation-Concatenated Polar Codes with Multi-purpose Frozen Bits by Turbo Decoding
Keisuke Asano, Takumi Abe, Kenta Kato, Yuki Mori, Eiji Okamoto (NIT), Tetsuya Yamamoto (Panasonic) RCS2022-158
The number of Internet of things (IoT) has been rapidly increasing and is expected to revolutionize industries and peopl... [more] RCS2022-158
pp.19-24
RCS 2022-10-28
13:50
Ehime Ehime University, and online
(Primary: On-site, Secondary: Online)
[Invited Lecture] Novel wireless communication system realized by mobile terminal collaboration -- Recent results and application to uplink transmission --
Hidekazu Murata, Yuta Ida (Yamaguchi Univ.), Kazuki Maruta (Tokyo Univ. of Science), Yutaka Jitsumatsu (Tokyo Tech), Osamu Muta (Kyushu Univ.), Hiraku Okada (Nagoya Univ.), Eiji Okamoto (NITech), Yukitoshi Sanada (Keio Univ.), Toshihiko Nishimura (Hakkaido Univ.), Satoshi Denno (Okayama Univ.) RCS2022-149
If nearby wireless terminals cooperate using high-frequency bands, a large number of antennas can be used at the termina... [more] RCS2022-149
p.107
AP, SANE, SAT
(Joint)
2022-07-29
14:30
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
Study on efficient channel coding method for next-generation optical satellite data relay system
Eiji Okamoto, Yuma Yamashita (NITech), Yohei Satoh, Mitsuhiro Nakadai, Takamasa Itahashi, Shiro Yamakawa (JAXA) SAT2022-27
High-capacity satellite communications are continuously demanded, and one of the challenges is to realize a high-capacit... [more] SAT2022-27
pp.57-62
NS, SR, RCS, SeMI, RCC
(Joint)
2022-07-15
11:05
Ishikawa The Kanazawa Theatre + Online
(Primary: On-site, Secondary: Online)
Study on Extended Ranging and Improved Accuracy of Indoor Positioning Using 5G D2D Communications
Takeshi Yamamoto, Eiji Okamoto (NITech) SeMI2022-40
In indoor locations where the global navigation satellite system (GNSS) cannot be used, alternative positioning methods ... [more] SeMI2022-40
pp.87-92
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