Toshihiko Okamura

According to our database, Toshihiko Okamura authored at least 14 papers between 1992 and 2025.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2025

Polarization-Independent 2.5-GHz Four-Encoding / Two-Decoy State BB84 QKD Systems Using Gated InGaAs SPADs.

Hiroki Kawahara, Seigo Takahashi, Toshihiko Okamura, Wakako Maeda, Naoto Ishii

Proceedings of the European Conference on Optical Communications, 2025

Highly Resilient Heterogeneous QKD Systems Integrated into Live Carrier-Grade C+L-Band ROADM-Based Links.

Hiroki Kawahara, Yasuhiro Katsube, Tetsuo Kawakami, Kotaro Ueda, Yu Yu, Toshihiko Okamura, Keisuke Mera, Yoshimichi Tanizawa, Masashi Ito, Mikio Fujiwara, Masahide Sasaki, Wakako Maeda, Naoto Ishii

Proceedings of the European Conference on Optical Communications, 2025

2024

Coexistence Demonstration and Wavelength Dependency Analysis of S-Band CV-QKD Signal with Fully Loaded C+L-Band DWDM Signals.

Tetsuo Kawakami, Hiroki Kawahara, Toshihiko Okamura, Wakako Maeda

Entropy, 2024

No-guard-band integration of digital coherent CV-QKD system into 400 Gbit/s 75 GHz grid DWDM systems.

Tetsuo Kawakami, Hiroki Kawahara, Toshihiko Okamura, Ken-Ichiro Yoshino, Wakako Maeda

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

2022

Efficient Word Size Modular Multiplication over Signed Integers.

Daichi Aoki, Kazuhiko Minematsu, Toshihiko Okamura, Tsuyoshi Takagi

Proceedings of the 29th IEEE Symposium on Computer Arithmetic, 2022

2019

Security Requirements for Store-on-Client and Verify-on-Server Secure Biometric Authentication.

Haruna Higo, Toshiyuki Isshiki, Masahiro Nara, Satoshi Obana, Toshihiko Okamura, Hiroto Tamiya

Proceedings of the Emerging Technologies for Authorization and Authentication, 2019

2016

Hardware-Trojans Rank: Quantitative Evaluation of Security Threats at Gate-Level Netlists by Pattern Matching.

Masaru Oya, Noritaka Yamashita, Toshihiko Okamura, Yukiyasu Tsunoo, Masao Yanagisawa, Nozomu Togawa

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2016

2015

A Hardware-Trojans Identifying Method Based on Trojan Net Scoring at Gate-Level Netlists.

Masaru Oya, Youhua Shi, Noritaka Yamashita, Toshihiko Okamura, Yukiyasu Tsunoo, Satoshi Goto, Masao Yanagisawa, Nozomu Togawa

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015

2014

A smaller and faster variant of RSM.

Noritaka Yamashita, Kazuhiko Minematsu, Toshihiko Okamura, Yukiyasu Tsunoo

Proceedings of the Design, Automation & Test in Europe Conference & Exhibition, 2014

2013

Load distribution of an OpenFlow controller for role-based network access control.

Takayuki Sasaki, Yoichi Hatano, Kentaro Sonoda, Yoichiro Morita, Hideyuki Shimonishi, Toshihiko Okamura

Proceedings of the 15th Asia-Pacific Network Operations and Management Symposium, 2013

2011

Information and communication technology infrastructure and management for collaboration with regional universities and colleges.

Takashi Yamanoue, Robert J. Fouser, Tomohito Wada, Masayasu Hidaka, Yusei Suzuki, Masaharu Terada, Akira Takenoshita, Yutoku Beppu, Yoko Nedachi, Koji Yukawa, Holmes Rodriguez, Katsuyuki Suenaga, Yuichi Yamanaka, Toshihiko Okamura, Anne Elizabeth Brasier, Hiroyuki Seto, Kazuhide Dogome, Takeshi Yamada, Noritaka Oto, Masakazu Ito, Munetomo Nedachi

Proceedings of the ACM SIGUCCS Fall Conference on User Services 2011, 2011

2009

A Hybrid ARQ Scheme Based on Rate-Compatible Low-Density Parity-Check Codes by Shortening and Extending.

Toshihiko Okamura

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

2008

A Hybrid ARQ Scheme Based on Shortened Low-Density Parity-Check Codes.

Toshihiko Okamura

Proceedings of the WCNC 2008, IEEE Wireless Communications & Networking Conference, March 31 2008, 2008

1992

A Si bipolar 5-Gb/s 8:1 multiplexer and 4.2-Gb/s 1:8 demultiplexer.

Masahiro Ohuchi, Toshihiko Okamura, Akihiro Sawairi, F. Kuniba, K. Matsumoto, Tsutomu Tashiro, S. Hatakeyama, K. Okuyama

IEEE J. Solid State Circuits, April, 1992