IEICE Trans

Hiroyuki YOKOYAMA

Shaka: User Movement Estimation Considering Reliability, Power Saving, and Latency Using Mobile Phone Arei KOBAYASHI Shigeki MURAMATSU Daisuke KAMISAKA Takafumi WATANABE Atsunori MINAMIKAWA Takeshi IWAMOTO Hiroyuki YOKOYAMA
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2011/06/01 Vol. E94-D No. 6 pp. 1153-1163 Type of Manuscript: Special Section PAPER (Special Section on Emerging Technologies of Ubiquitous Computing Systems) Category: Keyword: activity recognition, accelerometer, microphone, GPS, reliability, power saving, latency,
	Summary \| Full Text:PDF(2.3MB)

Design and Implementation of Pedestrian Dead Reckoning System on a Mobile Phone Daisuke KAMISAKA Shigeki MURAMATSU Takeshi IWAMOTO Hiroyuki YOKOYAMA
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2011/06/01 Vol. E94-D No. 6 pp. 1137-1146 Type of Manuscript: Special Section PAPER (Special Section on Emerging Technologies of Ubiquitous Computing Systems) Category: Keyword: pedestrian dead reckoning, pedestrian navigation system, indoor positioning, motion sensor, mobile phone, gait analysis,
	Summary \| Full Text:PDF(2.5MB)

A Secure Content Delivery System Based on a Partially Reconfigurable FPGA Yohei HORI Hiroyuki YOKOYAMA Hirofumi SAKANE Kenji TODA
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2008/05/01 Vol. E91-D No. 5 pp. 1398-1407 Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security) Category: Contents Protection Keyword: field-programmable gate array (FPGA), partial run-time reconfiguration (RTR), content protection, digital rights management (DRM),
	Summary \| Full Text:PDF(840.1KB)

Design Methods for Utility Max-Min Fair Share Networks Hiroyuki YOKOYAMA Hajime NAKAMURA Shinichi NOMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2004/10/01 Vol. E87-B No. 10 pp. 2922-2930 Type of Manuscript: PAPER Category: Network Keyword: utility functions, max-min fair share, bandwidth allocation, network design,
	Summary \| Full Text:PDF(905KB)

Optical Sampling System Using Compact and Stable External-Cavity Mode-Locked Laser-Diode Modules Masayuki SHIRANE Yoichi HASHIMOTO Hirohito YAMADA Hiroyuki YOKOYAMA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2004/07/01 Vol. E87-C No. 7 pp. 1173-1180 Type of Manuscript: Special Section PAPER (Special Section on Ultrafast Photonics) Category: Keyword: optical sampling, mode-locking, eye pattern, four-wave mixing, all-optical clock recovery, optical gate,
	Summary \| Full Text:PDF(840.3KB)

Reflection Routing: A Simple Approach for Contention Resolution in All-Optical Packet Switched Networks Hiroyuki YOKOYAMA Hajime NAKAMURA Shinichi NOMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2004/06/01 Vol. E87-B No. 6 pp. 1561-1568 Type of Manuscript: PAPER Category: Network Keyword: optical packet switching, routing, reflection, topology, packet loss ratio,
	Summary \| Full Text:PDF(562.9KB)

Prototype System of SLAMNet: Implementation and Performance Analysis of Signaling-Free Wavelength Path Switching Network Hiroyuki YOKOYAMA Hajime NAKAMURA Shinichi NOMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2004/04/01 Vol. E87-B No. 4 pp. 932-939 Type of Manuscript: PAPER Category: Network Keyword: optical networks, DWDM, best effort, wavelength path assignment, autonomous control, implementation,
	Summary \| Full Text:PDF(1.3MB)

Highly Reliable Mode-Locked Semiconductor Lasers Hiroyuki YOKOYAMA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2002/01/01 Vol. E85-C No. 1 pp. 27-36 Type of Manuscript: INVITED PAPER (Special Issue on Recent Progress in Semiconductor Lasers and Light-Emitting Devices) Category: Keyword: semiconductor laser, mode-locking, ultrashort light pulses, optical communication, optical measurement,
	Summary \| Full Text:PDF(1.3MB)

Tandem Queue Approximation of Non-preemptive Priority Queues for Capacity Dimensioning and Call Admission Control in an ATM Switch Hiroyuki YOKOYAMA Hajime NAKAMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1998/11/25 Vol. E81-B No. 11 pp. 2072-2080 Type of Manuscript: Special Section PAPER (Special Issue on Performance and Quality of Service (QoS) of Multimedia Networks) Category: ATM Networks Keyword: ATM, priority control, QoS, CAC, bandwidth control, effective bandwidth,
	Summary \| Full Text:PDF(755.7KB)

Ultrafast All-Optical Signal Processing with Mode-Locked Semiconductor Lasers Hisakazu KURITA Ichiro OGURA Hiroyuki YOKOYAMA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1998/02/25 Vol. E81-C No. 2 pp. 129-139 Type of Manuscript: INVITED PAPER (Special Issue on Ultrashort Optical Pulse Technologies and their Applications) Category: Mode-locked and Gain-switched Laser Diodes and High speed EA Modulators Keyword: ultrashort light pulses, semiconductor lasers, mode-locking, clock extraction, gate switch, nonlinear optical effects,
	Summary \| Full Text:PDF(1MB)