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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 8 of 8  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, RCC, ASN, NS, SR
(Joint)
2016-07-20
15:25
Aichi   Studies on Intersystem Cooperation for Smart Radio
Keigo Hasegawa, Masahiro Asano, Manabu Nakamura (Hitachi Kokusai Electric) SR2016-32
Smart radio is a technology similar to cognitive radio which can efficiently utilize limited radio resource and satisfy ... [more] SR2016-32
pp.23-27
SR, SRW
(Joint)
(2nd)
2015-10-27
09:30
Tokyo KKE [Poster Presentation] Achieving Cooperation in Inter-operator Infrastructure Sharing
Keigo Hasegawa (Hitachi Kokusai Electric/Univ. of Oulu), Zaheer Khan (Univ. of Oulu), Kenta Umebayashi (TUAT), Alhussein Abouzeid (RPI/Univ. of Oulu), Matti Latva-aho (Univ. of Oulu)
Infrastructure sharing is considered a potential cost-effective solution for solving the overflow demand problem in cell... [more]
AP 2015-02-20
10:25
Hyogo Chusho-kigyou center at Amagasaki-City [Invited Lecture] Field experiments of broadband communication using VHF band TV white space in Indonesia
Keigo Hasegawa, Tatsuya Abe, Kanta Sakamaoto, Yoshihiro Kawashima, Keat-Beng Toh, Kei Yanagisawa, Masayuki Takekawa, Junya Dosaka, Masahiro Asano (Hitachi Kokusai Electric) AP2014-200
This paper describes field experiments of broadband communication using VHF (Very High Frequency) band TV (Television) w... [more] AP2014-200
pp.75-80
RCS, SR, SRW
(Joint)
2014-03-04
09:40
Tokyo Waseda Univ. Field Experiment of Long-distance Broadband Communications in TV White Space
Kentaro Ishizu (NICT), Keigo Hasegawa (Hitachi Kokusai Electric), Keiichi Mizutani, Hirokazu Sawada (NICT), Kei Yanagisawa, Keat-Beng Toh, Masayuki Takekawa, Seishi Sasaki, Masahiro Asano (Hitachi Kokusai Electric), Homare Murakami, Hiroshi Harada (NICT) SR2013-105
 [more] SR2013-105
pp.61-68
SR 2013-10-24
13:00
Osaka Osaka Univ. [Technology Exhibit] White Space Communication Network with IEEE 802.11af/IEEE 802.22 Capable of Primary User Protection and Secondary User Coexistence
Kentaro Ishizu (NICT), Keigo Hasegawa, Masayuki Takekawa (Hitachi Kokusai Electric), Keiichi Mizutani, Zhou Lan, Ha Nguyen Tran, Stanislav Filin, Takeshi Matsumura (NICT), Kei Yanagisawa, Keat-Beng Toh (Hitachi Kokusai Electric), Homare Murakami (NICT), Seishi Sasaki, Masahiro Asano (Hitachi Kokusai Electric), Hiroshi Harada (NICT) SR2013-58
 [more] SR2013-58
pp.21-28
MW, AP
(Joint)
2013-09-13
15:00
Tokyo NHK Science Tech. Research Lab. Prototype Development of IEEE 802.22 Radio Transmission Equipment
Keigo Hasegawa, Masayuki Takekawa, Kei Yanagisawa, Keat-Beng Toh, Seishi Sasaki, Masahiro Asano (Hitachi Kokusai Electric) MW2013-96
White space utilization in TV band has drawn much attention in many countries as one of the solutions to solve the frequ... [more] MW2013-96
pp.47-52
AN 2007-12-18
13:00
Fukuoka Fukuoka Institute of System LSI Design Industry SDMA Transmission Method for Reducing Delay Time in Multi-Hop Wireless Networks
Keigo Hasegawa (TUAT), Takeo Fujii (UEC), Kenta Umebayashi, Yukihiro Kamiya, Yasuo Suzuki (TUAT) AN2007-50
This paper proposes an SDMA transmission method in multi-hop networks.
In our method, multiple relay nodes, which are ... [more]
AN2007-50
pp.1-6
IN 2004-11-19
09:00
Osaka Osaka Univ. A Novel Routing Algorithm for Wireless Ad Hoc Networks using Adaptive Array Antennas
Keigo Hasegawa, Yukihiro Kamiya, Takeo Fujii, Yasuo Suzuki (TUAT)
Recently, wireless ad hoc networks are widely paid attention since they do not require any infrastructure such as base s... [more] IN2004-108
pp.1-6
 Results 1 - 8 of 8  /   
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