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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SAT, RCS (Joint) |
2020-08-21 09:50 |
Online | Online (Online) | A Study on Robust Beamforming Design for Millimeter-Wave Communications with Stochastic Blockages Ryo Okabe (The Univ. of Electro-Communications), Hiroki Iimori (JUB), Koji Ishibashi (The Univ. of Electro-Communications)  RCS2020-84 |
[more] | RCS2020-84 pp.29-34 |
| RCS | 2019-06-21 10:20 |
Okinawa | Miyakojima Hirara Port Terminal Building (Okinawa) | A Study on Energy-Efficient Design of Irregular Repetition Slotted ALOHA with Stochastic Power Control Ryo Okabe, Masaru Oinaga, Shun Ogata, Koji Ishibashi (The Univ. of Electro-Communications) RCS2019-87 |
Irregular repetition slotted ALOHA based on non-orthogonal multiple acces (IRSA-NOMA) utilizes stochastic power control ... [more] | RCS2019-87 pp.291-296 |
| MBE, BioX, NC | 2016-10-22 16:30 |
Osaka | Osaka Electro-Communication University (Osaka) | A study on improving authentication accuracy for a multifactor authentication system considering usage environment Tomoaki Higashi, Ryo Okabe, Yasushi Yamazaki (Kitakyushu Univ.), Tetsushi Ohki (AIST) BioX2016-29 MBE2016-43 NC2016-28 |
As a means of more secure and convenient user authentication for rapidly spreading smart devices, we have proposed a mul... [more] | BioX2016-29 MBE2016-43 NC2016-28 pp.67-72 |
| OCS, NS, PN (Joint) |
2016-06-23 16:05 |
Hokkaido | Hokkaido University (Hokkaido) | [Invited Talk]
SDN Orchestration of EU-Japan Optical Network Testbeds
-- the STRAUSS Project -- Yuki Yoshida (NICT), Ken-ichi Kitayama (GPI), Noboru Yoshikane, Xiaoyuan Cao, Takahiro Tsuritani, Itsuro Morita (KDDI R&D Labs.), Yutaka Kai, Masato Nishihara, Ryo Okabe, Toshiki Tanaka, Tomoo Takahara, Jens Rasmussen (Fujitsu), Masaki Shiraiwa, Yoshinari Awaji, Naoya Wada (NICT) NS2016-37 OCS2016-13 PN2016-7 |
The framework and technological achievements of the EU-JP project, STRAUSS, are introduced. The STRAUSS project aims to ... [more] | NS2016-37 OCS2016-13 PN2016-7 p.53(NS), p.23(OCS), p.13(PN) |
| PRMU, BioX | 2016-03-24 13:00 |
Tokyo | (Tokyo) | A smart device-based multifactor authentication system based on context awareness Ryo Okabe, Tomoaki Higashi, Yasushi Yamazaki (Kitakyushu Univ.), Tetsushi Ohki (AIST) BioX2015-47 PRMU2015-170 |
In user authentication on smart devices, such as smart-phones and tablet PCs, it is difficult to maintain a usage envi... [more] |
BioX2015-47 PRMU2015-170 pp.37-42 |
| BioX, ITE-ME, ITE-IST | 2015-06-30 09:15 |
Ishikawa | Kanazawa University, Kakuma Campus (Ishikawa) | A study on multimodal biometric authentication using smart devices Ryo Okabe, Yasushi Yamazaki (The Univ. of Kitakyushu) BioX2015-8 |
With the rapid spread of smart devices such as smart phones and tablet PCs, person authentication for the purpose of p... [more] |
BioX2015-8 pp.61-66 |
| AP | 2015-01-23 14:20 |
Ehime | Ehime University (Ehime) | A consideration on beam adjustable planar array antennas with narrow-width microstrip antenna elements Ryo Okabe, Sakuyoshi Saito, Yuichi Kimura (Saitama Univ.) AP2014-182 |
This paper presents beam adjustable microstrip antenna arrays (BA-MSAAs) with narrow-width elements. The BA-MSAA consist... [more] | AP2014-182 pp.121-126 |
| OCS, OPE, LQE | 2014-10-31 15:40 |
Nagasaki | Nagasaki Museum of History and Culture (Nagasaki) | [Invited Talk]
Discrete Multi-Tone Technology for Short Reach Application Ryo Okabe, Toshiki Tanaka, Masato Nishihara, Yutaka Kai, Tomoo Takahara, Jens C. Rasmussen (FUJITSU) OCS2014-81 OPE2014-125 LQE2014-99 |
[more] | OCS2014-81 OPE2014-125 LQE2014-99 pp.205-210 |
| LQE, OCS, OPE | 2013-10-25 17:10 |
Fukuoka | (Fukuoka) | Precisely frequency allocated multiplexing at distributed point using fiber frequency conversion Tomoyuki Kato, Ryo Okabe (Fujitsu Lab.), Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert (HHI), Shigeki Watanabe (Fujitsu Lab.) OCS2013-80 OPE2013-126 LQE2013-96 |
We extend our investigation on a recently proposed concept for distributed optical frequency division multiplexing (CO-O... [more] | OCS2013-80 OPE2013-126 LQE2013-96 pp.153-158 |
| NS, OCS, PN (Joint) |
2012-06-21 15:10 |
Yamagata | Yamagata Univ. (Yamagata) | Frequency Conversion, Synchronization Control, and Multiplexing Using Cross-Phase Modulation Tomoyuki Kato, Ryo Okabe (Fujitsu lab.), Robert Elschner, Thomas Richter, Colja Schubert (HHI), Shigeki Watanabe (Fujitsu lab.) OCS2012-13 |
(Advance abstract in Japanese is available) [more] | OCS2012-13 pp.23-28 |
| PN, OCS, NS (Joint) |
2011-06-23 15:40 |
Wakayama | Wakayama University (Wakayama) | All-optical Data Frequency Multiplexing on Single-Wavelength Carrier Light by Sequentially Provided Cross-Phase Modulation in Fiber Shigeki Watanabe, Tomoyuki Kato, Ryo Okabe (Fujitsu Labs.), Robert Elschner, Reinhold Ludwig, Colja Schubert (HHI) OCS2011-18 |
A novel configuration for an all-optical bus-topology data-multiplexing system is proposed in which multichannel signals... [more] | OCS2011-18 pp.39-44 |
| OCS, NS, PN (Joint) |
2010-06-24 11:10 |
Akita | Akita University (Akita) | Investigation on the reduction of signal amplitude fluctuation using limiting amplification with optical fiber parametric limiter amplifier Tomoyuki Kato, Ryo Okabe, Shigeki Watanabe (Fujitsu lab.) OCS2010-12 |
(Advance abstract in Japanese is available) [more] | OCS2010-12 pp.7-12 |
| OCS, OPE, LQE | 2005-11-03 16:35 |
Fukuoka | (Fukuoka) | 160Gb/s Optical Demultiplexing with Enhanced Timing Margin by Unequally Aligning Pulse Position Fumio Futami, Ryo Okabe, Shunsuke Ono, Shigeki Watanabe (FUJITSU LABS) |
[more] | OCS2005-54 OPE2005-84 LQE2005-92 pp.35-38 |
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