Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
CQ |
2014-01-24 16:15 |
Tokyo |
Tokyo City University |
[Invited Talk]
Patent Issues in Communication Field and Patent Fundamentals for Engineers Kengo Nagata (NTT), Youhei Ohno (NTT DOCOMO) CQ2013-86 |
[more] |
CQ2013-86 pp.105-107 |
CPM, SDM, ED |
2011-05-19 16:40 |
Aichi |
Nagoya Univ. (VBL) |
Growth of GaN and AlGaN on B-Ga2O3 (100) substrate Shun Ito, Kenichiro Takeda, Kengo Nagata, Hiroki Aoshima, Kosuke Takehara, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama (Meijo Univ), Isamu Akasaki, Hiroshi Amano (Meijo Univ/Nagoya Univ) ED2011-16 CPM2011-23 SDM2011-29 |
beta-Ga2O3 is one of the most attractive substrates for AlGaN-based UV light-emitting-diodes (LEDs). Its transparency up... [more] |
ED2011-16 CPM2011-23 SDM2011-29 pp.77-81 |
CPM, SDM, ED |
2011-05-20 10:50 |
Aichi |
Nagoya Univ. (VBL) |
High reflective electrode for UV light emitting diodes Kosuke Takehara, Kenichiro Takeda, Kengo Nagata, Hiroki Aoshima, Shun Ito, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama, Isamu Akasaki (Meijo Unv.), Hiroshi Amano (Nagoya Univ.) ED2011-23 CPM2011-30 SDM2011-36 |
Light extraction efficiency is one of the most critical factors for improving the efficiency of UV-LEDs. Combination of ... [more] |
ED2011-23 CPM2011-30 SDM2011-36 pp.117-121 |
AN |
2010-07-15 15:10 |
Hokkaido |
Hakodate City Central Library |
[Invited Talk]
Trend and prospect in next generation of WLAN Takefumi Hiraguri (NIT), Kengo Nagata (NTT), Kentaro Nishimori (Niigata Universit) AN2010-14 |
[more] |
AN2010-14 pp.25-29 |
CQ |
2010-07-08 16:35 |
Hokkaido |
Soya Fureai Park |
[Invited Talk]
QoS Control techniques on Wireless LAN Standardization Takefumi Hiraguri (Nippon Inst. of Tech.), Kengo Nagata (NTT) CQ2010-29 |
[more] |
CQ2010-29 pp.71-75 |
ED, LQE, CPM |
2009-11-19 16:10 |
Tokushima |
Univ. of Tokushima (Josanjima Campus, Kogyo-Kaikan) |
Reduction in operating voltage of UV laser diode Tomoki Ichikawa, Kenichiro Takeda, Yuji Ogiso, Kengo Nagata, Motoaki Iwaya, Satoshi Kamiyama, Hiroshi Amano, Isamu Akasaki (Meijo Univ.), Harumasa Yoshida, Masakazu Kuwabara, Yoji Yamashita, Hirofumi Kan (Hamamatsu Photonics K.K.) ED2009-142 CPM2009-116 LQE2009-121 |
Annealing condition for n-type electrode in AlGaN-based UV LD was investigated. High temperature annealing is found to b... [more] |
ED2009-142 CPM2009-116 LQE2009-121 pp.65-69 |
ED, LQE, CPM |
2009-11-19 17:10 |
Tokushima |
Univ. of Tokushima (Josanjima Campus, Kogyo-Kaikan) |
High Efficiency ultraviolet emitters by activation annealing in oxygen flow Kengo Nagata, Tomoki Ichikawa, Kenichiro Takeda, Kentaro Nagamatsu, Motoaki Iwaya, Satoshi Kamiyama, Hiroshi Amano, Isamu Akasaki (Meijo Univ.) ED2009-144 CPM2009-118 LQE2009-123 |
Activation annealing of Mg-doped p-type Al0.17Ga0.83N in different gases was conducted. The hole concentration in Al0.17... [more] |
ED2009-144 CPM2009-118 LQE2009-123 pp.75-80 |
MoNA, IPSJ-MBL |
2009-05-08 15:10 |
Okinawa |
Miyakojima Marine Terminal |
A Scheduling Method for Avoiding Interference between Wireless LAN and WiMAX Akira Kishida, Takefumi Hiraguri (NTT), Masakatsu Ogawa (NTT East Corp.), Kengo Nagata, Makoto Umeuchi (NTT) MoMuC2009-12 |
This paper proposes an enhanced version of our scheduling method that prevents interference between wireless LAN (WLAN) ... [more] |
MoMuC2009-12 pp.167-172 |
MoNA, IPSJ-MBL |
2009-05-08 15:35 |
Okinawa |
Miyakojima Marine Terminal |
Performance Evaluation for Power Saving Mode in Wireless LAN Access Points Masakatsu Ogawa (NTT East Corp.), Takefumi Hiraguri, Kengo Nagata, Akira Kishida, Makoto Umeuchi (NTT) MoMuC2009-13 |
This paper evaluates a power saving control function for battery-powered portable wireless LAN (WLAN) access points (APs... [more] |
MoMuC2009-13 pp.173-177 |
RCS, AN, MoNA, SR (Joint) |
2009-03-06 13:20 |
Kanagawa |
YRP |
Dynamic Control for Contention Window based on Transmission History in Wireless LANs Masakatsu Ogawa, Takefumi Hiraguri, Kengo Nagata (NTT) MoMuC2008-92 |
This paper proposes a distributed adaptive contention window adjustment algorithm based on the transmission history for ... [more] |
MoMuC2008-92 pp.41-46 |
RCS, AN, MoNA, SR (Joint) |
2009-03-06 13:40 |
Kanagawa |
YRP |
Power Saving Mode for Wireless LAN Access Points Masakatsu Ogawa, Takefumi Hiraguri, Kengo Nagata, Akira Kishida, Makoto Umeuchi (NTT) MoMuC2008-93 |
This paper proposes a power saving control function for battery-powered portable wireless LAN (WLAN) access points (APs)... [more] |
MoMuC2008-93 pp.47-50 |
IN, MoNA (Joint) |
2008-11-14 09:00 |
Fukuoka |
Kyushu Institute of Technology |
MAC protocol that suppresses interference between Wireless LAN and WiMAX for wireless relay Akira Kishida, Takefumi Hiraguri, Masakatsu Ogawa, Kengo Nagata, Makoto Umeuchi, Toshihiro Manabe (Nippon Telegraph and Telephone) MoMuC2008-67 |
In order to connect wireless LAN (WLAN) devices to a backbone network anywhere, this paper focuses on a relay technique ... [more] |
MoMuC2008-67 pp.33-38 |
RCS, NS (Joint) |
2008-07-17 16:40 |
Kyoto |
Kyoto University |
[Invited Talk]
Standardization Activities of IEEE 802.11 Wireless LANs Yasuhiko Inoue, Kengo Nagata (NTT) NS2008-32 RCS2008-41 |
[more] |
NS2008-32 RCS2008-41 pp.37-42(NS), pp.55-60(RCS) |
MVE, CQ, MoNA (Joint) |
2006-01-27 14:25 |
Oita |
Beppu Onsen Spring (Resorpia Beppu Hotel) |
EDCA-HCCA Combination Scheme for Gateway APs in IEEE 802.11-compliant Mesh WLANs Luis Loyola, Masakatsu Ogawa, Kengo Nagata, Tetsu Sakata, Satoru Aikawa (NTT) |
[more] |
MoMuC2005-82 pp.49-54 |
RCS, CS |
2005-01-28 16:00 |
Okinawa |
University of the Ryukyus |
A New Multi-channel Multi-radio Mesh Architecture for extending the Coverage Area of WLAN Hot Zones Luis Loyola, Tomoaki Kumagai, Kengo Nagata, Shinya Otsuki, Satoru Aikawa (NTT) |
[more] |
CS2004-198 RCS2004-305 pp.89-94 |
RCS, CS |
2005-01-28 16:20 |
Okinawa |
University of the Ryukyus |
A New Transmission Method for Efficient Radio Resource Sharing between Uplink and Downlink Channels in IEEE 802.11 WLAN system Kengo Nagata, Shinya Otsuki, Tomoaki Kumagai, Luis Loyola, Satoru Aikawa (NTT) |
IEEE 802.11 WLAN systems have become widely used in various environments such as office networks, home networks and publ... [more] |
CS2004-199 RCS2004-306 pp.95-100 |