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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SR, SRW (Joint) |
2024-03-13 13:50 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
Performance Improvement for Differential OFDM in Shallow Sea Experiments of Underwater Acoustic Communications Taichi Fujita, Takaaki Shimomura, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.)  RCS2023-261 |
The authors have been evaluating differential orthogonal frequency division multiplexing (OFDM) by means of the experime... [more] | RCS2023-261 pp.42-47 |
| RCS, SR, SRW (Joint) |
2024-03-13 14:15 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
A Simple Channel Simulator and a Simple Channel Parameter Evaluation Scheme for Shalloiw Sea Environment of Underwater Acoustic Communications Kouichi Hashimoto, Eiji Arita, Takaaki Shimomura, Ayano Kunimatsu, Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.) RCS2023-262 |
This paper proposes a simple pass-band channel simulator and a simple channel parameter evaluation scheme for underwater... [more] | RCS2023-262 pp.48-53 |
| UWT (2nd) |
2024-01-29 13:00 |
Tokyo | Tokai University Shinagawa Campus (Primary: On-site, Secondary: Online) |
Underwater Acoustic Channel Environment Evaluation Employing a Simple Doubly-Selective Shallow Sea Channel Model Ayano Kunimatsu, Takaaki Shimomura, Kouichi Hashimoto, Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.) |
This paper derives channel parameters in severe doubly-selective underwater acoustic channel environments, assuming hori... [more] | |
| UWT (2nd) |
2024-01-29 13:25 |
Tokyo | Tokai University Shinagawa Campus (Primary: On-site, Secondary: Online) |
Wideband Differential OFDM for Acoustic Communications on Wideband Acoustic Channel Measurement Takaaki Shimomura, Kouichi Hashimoto, Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.) |
Acoustic communications, e.g., underwater acoustic communications and terrestrial acoustic communications, generally use... [more] | |
| UWT (2nd) |
2024-01-29 14:15 |
Tokyo | Tokai University Shinagawa Campus (Primary: On-site, Secondary: Online) |
Shallow-Water Experimental Evaluation of Differential OFDM Software MODEMs for Underwater Acoustic Communications Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) |
It is well-known that underwater acoustic communications (UWACs) play an important role in underwater mobile communicati... [more] | |
| SIP, IT, RCS | 2024-01-19 10:20 |
Miyagi | (Primary: On-site, Secondary: Online) |
Experimental Results of a Channel Sounder for Underwater Acoustic Communications in Sharrow Sea Environment Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) IT2023-58 SIP2023-91 RCS2023-233 |
Doubly-selectivity of underwater acoustic communications (UWACs) can be measured by channel sounders, which estimate tim... [more] | IT2023-58 SIP2023-91 RCS2023-233 pp.151-156 |
| SIP, IT, RCS | 2024-01-19 10:55 |
Miyagi | (Primary: On-site, Secondary: Online) |
Experimental Results of Differential OFDM for Underwater Acoustic Communications in Sharrow Sea Environment Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) IT2023-59 SIP2023-92 RCS2023-234 |
It is well known that wireless transmission technologies employing spatial combining and adaptive equalization and those... [more] | IT2023-59 SIP2023-92 RCS2023-234 pp.157-162 |
| HCGSYMPO (2nd) |
2023-12-11 - 2023-12-13 |
Fukuoka | Asia pacific Import Mart (Kitakyushu) (Primary: On-site, Secondary: Online) |
Study on guided debugging support functions in C programming learning Kohki Hashimoto, Kazuhiro Notomi (Kanagawa Institute of Technology) |
The authors are conducting study on a programming learning support system with the aim of making it easier for beginners... [more] | |
| UWT (2nd) |
2023-11-27 14:50 |
Shiga | Ritsumeikan University Biwako-Kusatsu Campus (BKC) | [Invited Talk]
A Channel Sounder for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.) |
Doubly-selectivity of underwater acoustic communications (UWACs) can be measured by channel sounders, which estimate tim... [more] | |
| AP, RCS (Joint) |
2023-11-17 11:25 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
[Encouragement Talk]
Differential OFDM for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) RCS2023-172 |
It is well-known that underwater acoustic communications (UWACs) play an important role for underwater mobile communicat... [more] | RCS2023-172 pp.101-106 |
| PN, NS, OCS (Joint) |
2023-06-09 14:15 |
Kagawa | (Primary: On-site, Secondary: Online) |
A Nonlinear Compensation Scheme Based on Inverse Scattering Transform in Normal-Dispersion Optical Fiber Transmission System Nanto Hirao, Kohei Hashimoto, Ryuya Hiraga, Akihiro Maruta (Osaka Univ.) PN2023-14 |
In optical fiber transmission, in addition to wavelength dispersion, signal distortion due to the effect of fiber nonlin... [more] | PN2023-14 pp.58-64 |
| SR, UWT (Joint) |
2023-01-26 15:50 |
Tokyo | Takanawa Campus, Tokai Univ. (Primary: On-site, Secondary: Online) |
Differential OFDM Software MODEMs for Underwater Acoustic Communications Taichi Fujita, Kouichi Hashimoto, Hiroshi Kubo (Ritsumeikan Univ.) |
It is well-known that underwater acoustic communications (UWACs) play an important role in underwater mobile communicati... [more] | |
| OCS, CS (Joint) |
2023-01-13 13:45 |
Fukuoka | CANAL CITY HAKATA (Primary: On-site, Secondary: Online) |
Eigenvalue analysis of dispersion-managed solitons in anomalous and normal dispersion fiber Ryuya Hirga, Hiroki Endo, Kohei Hashimoto, Akihiro Maruta (Osaka Univ.) CS2022-71 |
Dispersion management (DM) has been a well-known technique for mitigating the inter-channel nonlinear interactions which... [more] | CS2022-71 pp.41-46 |
| RCS, AP, UWT (Joint) |
2022-11-15 14:30 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
A Channel Sounder for Severe Doubly-Selective Channels of Underwater Acoustic Communications Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-161 |
Doubly-selectivity of underwater acoustic communications (UWAC) can be measured by channel sounders, which estimate time... [more] | RCS2022-161 pp.37-42 |
| RCS, AP, UWT (Joint) |
2022-11-15 14:55 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
Differential OFDM for Severe Doubly-Selective Channels of Underwater Acoustic Communications Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-162 |
It is well known that wireless transmission technologies employing spatial combining and adaptive equalization and those... [more] | RCS2022-162 pp.43-48 |
| RCS, AP, UWT (Joint) |
2022-11-16 11:00 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Wireless Transmission Technologies for Severe Doubly-Selective Channels of Underwater Acoustic Communications Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) AP2022-155 RCS2022-166 |
It is well-known that underwater acoustic communications (UWACs) plays an important role for underwater mobile communica... [more] | AP2022-155 RCS2022-166 pp.45-50(AP), pp.67-72(RCS) |
| ITE-BCT, OCS, IEE-CMN, OFT | 2022-11-10 14:50 |
Miyagi | Forest-Sendai (Primary: On-site, Secondary: Online) |
Eigenvalue of bi-soliton and its dependency on transmission line parameters Kohei Hashimoto, Hiroki Endo, Akihiro Maruta (Osaka Univ) OCS2022-43 |
Dispersion management (DM) has been a well-known technique for mitigating the inter-channel nonlinear interactions which... [more] | OCS2022-43 pp.18-23 |
| AP | 2022-02-18 13:55 |
Online | Online | [Invited Lecture]
Cross-polarization reduction of a Ku-band phased array with a rotatable polarization plane Makoto Sano, Koh Hashimoto, Kentaro Wada (Toshiba) AP2021-175 |
The authors have been developing a Ku-band phased array that can change the main-beam direction and the polarization pla... [more] | AP2021-175 pp.93-98 |
| MW, AP (Joint) |
2020-09-25 09:50 |
Online | Online | A 6-port power divider for the feeding of a compact dual linearly polarized patch antenna Makoto Sano, Koh Hashimoto (Toshiba) AP2020-61 |
The isolation and the cross-polarization discrimination of a patch antenna can be enhanced by feeding the antenna differ... [more] | AP2020-61 pp.127-132 |
| PRMU, CNR | 2019-03-01 09:30 |
Tokushima | Point cloud deep learning for estimating 3-D rigid body transformation Yukihiro Toda, Naoya Chiba, Koichi Hashimoto (Tohoku Univ.) PRMU2018-123 CNR2018-46 |
6D pose estimation is an important task in the research field of robot vision. Pose estimation is used in picking task i... [more] | PRMU2018-123 CNR2018-46 pp.49-52 |
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