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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 16 of 16  /   
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
 Results 1 - 16 of 16  /   
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