Hiroki OKA

A Failsoft Scheme for Mobile Live Streaming by Scalable Video Coding
Hiroki OKADA Masato YOSHIMI Celimuge WU Tsutomu YOSHINAGA 
Publication:   
Publication Date: 2021/12/01
Vol. E104-D  No. 12  pp. 2121-2130
Type of Manuscript:  Special Section PAPER (Special Section on Parallel, Distributed, and Reconfigurable Computing, and Networking)
Category: 
Keyword: 
live video streaming, mobile cooperative caching, peak avoidance, traffic reduction, D2D, scalable video coding, 
 Summary | Full Text:PDF
A Compact Digital Signature Scheme Based on the Module-LWR Problem
Hiroki OKADA Atsushi TAKAYASU Kazuhide FUKUSHIMA Shinsaku KIYOMOTO Tsuyoshi TAKAGI 
Publication:   
Publication Date: 2021/09/01
Vol. E104-A  No. 9  pp. 1219-1234
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Cryptography and Information Security
Keyword: 
lattice cryptography, digital signatures, learning with rounding, 
 Summary | Full Text:PDF | (Errata[Uploaded on February 1,2022])
Faster Rotation-Based Gauss Sieve for Solving the SVP on General Ideal Lattices
Shintaro NARISADA Hiroki OKADA Kazuhide FUKUSHIMA Shinsaku KIYOMOTO 
Publication:   
Publication Date: 2021/01/01
Vol. E104-A  No. 1  pp. 79-88
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
shortest vector problem, Gauss Sieve, ideal lattice, generalization, 
 Summary | Full Text:PDF
On the Complexity of the LWR-Solving BKW Algorithm
Hiroki OKADA Atsushi TAKAYASU Kazuhide FUKUSHIMA Shinsaku KIYOMOTO Tsuyoshi TAKAGI 
Publication:   
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 173-182
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
lattice, learning with errors, learning with rounding, Blum-Kalai-Wasserman algorithm, 
 Summary | Full Text:PDF
A Method to Derive SSO Design Rule Considering Jitter Constraint
Koutaro HACHIYA Hiroyuki KOBAYASHI Takaaki OKUMURA Takashi SATO Hiroki OKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 865-872
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
simultaneous switching output, simultaneous switching noise, jitter, ASIC, 
 Summary | Full Text:PDF
Small Planar Packaging System Combined with Card-On-Board Packaging for High-Speed, High-Density Switching Systems
Tohru KISHIMOTO Keiichi YASUNA Hiroki OKA Katsumi KAIZU Sinichi SASAKI Yasuo KANEKO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/10/25
Vol. E81-B  No. 10  pp. 1894-1902
Type of Manuscript:  PAPER
Category: Communication Systems and Transmission Equipment
Keyword: 
planar packaging, card-on-board packaging, multichip module, coaxial ZIF connector, ATM switching system, 
 Summary | Full Text:PDF
Evaluation of Board-to-board High-speed Signal transmission Limit in a Rack System
Nobuaki SUGIURA Hiroki OKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/04/25
Vol. E78-B  No. 4  pp. 591-596
Type of Manuscript:  PAPER
Category: Communication Systems and Transmission Equipment
Keyword: 
signal transmission, noise, evaluation, connector, 
 Summary | Full Text:PDF
Suitable Conditions for Connections through the Plated Through Hole of Printed Circuit Boards
Hiroki OKA Nobuaki SUGIURA Kei-ichi YASUDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/03/25
Vol. E78-C  No. 3  pp. 304-310
Type of Manuscript:  PAPER
Category: Components
Keyword: 
plated through hole (PTH), printed circuit board (PCB), simulation analysis model, signal reflection characteristics, PTH diameter, PTH pitch, high-speed connectors, 
 Summary | Full Text:PDF