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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 17 of 17  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)
2013-02-27
14:50
Tokyo Waseda Univ. User Scheduling for Uplink SC-FDMA with Subcarrier-Blocking
Takayoshi Iwata, Kazuhiro Kimura, Hiroyuki Miyazaki, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2012-297
Previously, we proposed the scheduling methods so as to select a constant number of simultaneous multi-access users for ... [more] RCS2012-297
pp.79-84
RCS, SR, SRW
(Joint)
2013-02-27
09:00
Tokyo Waseda Univ. Spectrum Assignment in Multi-hop Relay with Diversity
Takanori Matsuno, Kazuhiro Kimura, Hiroyuki Miyazaki, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-304
In mobile communications, multi-hop relay can reduce the transmit power since the communication distance is reduced, whi... [more] RCS2012-304
pp.121-125
RCS, SR, SRW
(Joint)
2013-02-27
09:20
Tokyo Waseda Univ. Adaptive Modulation Assignment For Uplink Single Carrier Cooperative DF Relay with Multi-Antenna Using Direct/Cooperative DF Relay Switching
Kazuhiro Kimura, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2012-305
In our previous work, we proposed an adaptive modulation assignment method for uplink single carrier (SC) 2-time slot co... [more] RCS2012-305
pp.127-132
RCS, NS, USN
(Joint)
2012-07-20
09:25
Iwate Iwate Univ. A Study of Scheduling for Uplink SC-FDMA Cooperative AF relay
Takayoshi Iwata, Kazuhiro Kimura, Hiroyuki Miyazaki, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2012-85
 [more] RCS2012-85
pp.61-66
SR, RCS, SRW
(Joint)
2012-03-09
13:50
Kanagawa YRP Adaptive Modulation Assignment For Uplink Single Carrier Cooperative DF Relay Using Direct/Cooperative DF Relay Switching
Kazuhiro Kimura, Masayuki Nakada, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2011-367
The cooperative relay is a promising technique to increase the cell edge throughput. In our previous paper, we proposed ... [more] RCS2011-367
pp.305-310
SAT, SANE
(Joint)
2012-02-16
13:50
Mie   Area evaluation of wideband transmission propagation for Quasi Zenith
Isao Nakazawa, Kazuhiro Kimura, Yoshiyuki Fujino, Shin'ichi Hama (NICT) SANE2011-160 SAT2011-67
In Japan, mobile satellite communication systems are now in service on S-band frequency. Moreover, the Quasi Zenith Sat... [more] SANE2011-160 SAT2011-67
pp.1-6(SANE), pp.13-18(SAT)
NS, RCS
(Joint)
2011-12-15
13:15
Yamaguchi Yamaguchi University Suboptimal Modulation Assignment For Uplink Single Carrier Cooperative DF Relay
Kazuhiro Kimura, Masayuki Nakada, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) NS2011-126 RCS2011-239
We previously proposed a modulation assignment method (conventional method) for uplink single carrier (SC) 2-time slot c... [more] NS2011-126 RCS2011-239
pp.43-48(NS), pp.39-44(RCS)
AP, SAT
(Joint)
2011-07-14
14:25
Nagano Fac. Eng., Shinshu Univ. Wideband radio propagation analysis for Quasi Zenith Satellite Systems at high elevation angles
Isao Nakazawa, Kazuhiro Kimura, Yoshiyuki Fujino, Shin'ichi Hama (NICT) SAT2011-10
In Japan, mobile satellite communication systems are now in service on S-band frequency. Moreover, the Quasi Zenith Sat... [more] SAT2011-10
pp.13-18
RCS, MoNA, SR
(Joint)
2011-03-04
13:40
Kanagawa YRP Modulation Assignment for Uplink Single Carrier Cooperative DF Relay
Kazuhiro Kimura, Masayuki Nakada, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2010-291
The throughput of a user close to the cell edge significantly degrades by the path loss, shadowing loss and fading. The ... [more] RCS2010-291
pp.247-252
RCS, SAT
(Joint)
2007-12-21
10:35
Oita   Propagation analysis and field measurements of circularly polarized wave on high elevation angle for mobile satellite communications
Isao Nakazawa, Kazuhiro Kimura, Jun Amagai, Yoshiyuki Fujino, Hitoshi Ishida, Shin'ichi Hama (NICT) SAT2007-57
In the mobile satellite communications in the personal use environment, it is preferable to clarify a variety of propaga... [more] SAT2007-57
pp.7-12
SAT 2006-10-19
17:30
Overseas KAL Hotel (Jeju-Do, Korea) Analysis of the Propagation Field Data on High Elevation Angle for 2GHz and 2.5GHz Bands Mobile Satellite Communications
Isao Nakazawa (NTWL), Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT)
The receiving revel of mobile satellite communication using the communication and broadcasting engineering test satellit... [more]
AP, SAT
(Joint)
2006-07-07
09:55
Hiroshima Hiroshima Institute of Technology Communication System Design in Time Management System for Satellite Positioning System using Quasi-Zenith Satellites
Yasuhiro Takahashi, Jun Amagai, Kazuhiro Kimura, Miho Fujieda, Shin'ichi Hama (NICT), Mikio Sawabe, Motohisa Kishimoto (JAXA), Kazuo Kondo, Toshihaya Nakahara, Satoshi Horiuchi (NTS) SAT2006-14
 [more] SAT2006-14
pp.7-12
AP, SAT
(Joint)
2006-07-07
10:20
Hiroshima Hiroshima Institute of Technology Propagation measurements and analysis on high elevation angle for 2GHz and 2.5GHz bands mobile satellite communications
Isao Nakazawa (NTWL), Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT) SAT2006-15
In the measurement of received power of the mobile satellite communication systems by using COMETS(Communication and br... [more] SAT2006-15
pp.13-18
AP, SAT
(Joint)
2006-05-18
14:20
Kagoshima Kagoshima Univ. Field Measurement of Radio Environment Using S-Band Thin Antennas for Automotive Mobile Satellite Communications
Kazuhiro Kimura, Shin'ichi Hama (NICT), Izuru Naito, Masahiro Ichieda, Seiya Inoue, Motoyoshi Terauchi (Mitsubishi Electric Corp.) SAT2006-3
Field measurement results of radio environment are reported for interference assessment at mobile terminals from existin... [more] SAT2006-3
pp.11-16
SAT 2005-10-13
13:40
Aichi Rubura Ohzan Quasi-Zenith Satellite System (QZSS) -- Outline and its time related mission --
Shin'ichi Hama, Yasuhiro Takahashi, Jun Amagai, Hiroyuki Ito, Takao Morikawa, Shouichirou Yokota, Miho Fujieda, Kazuhiro Kimura (NICT)
Japan has started a project of Quasi-Zenith Satellite System (QZSS)
since FY2003. QZSS will be highly useful not only... [more]
SAT2005-19
pp.13-17
SANE 2005-06-30
14:55
Ibaraki JAXA(Tsukuba) Large telescope satellite on quasi-zenith orbit
Masato Tanaka, Yoshinori Arimoto, Kazuhiro Kimura (NICT)
The demand which carries out optical observation of Japan and its circumference by high resolution from a satellite for ... [more] SANE2005-38
pp.103-106
AP, SAT
(Joint)
2005-05-20
09:55
Tottori Tottori Univ. of Environmental Studies S-band packet communication test system for Quasi-Zenith Satellite System
Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT), Nobuyuki Ishioka, Yasushi Kasugai (Hitachi), Haruo Akino (FDK), Nobutoshi Fukuden (AI Elec.), Hiroyuki Uematsu (Mitsubishi Elec.)
S-band mobile satellite packet communication service will be provided by the developing Japanese Quasi-Zenith satellite ... [more] SAT2005-2
pp.7-12
 Results 1 - 17 of 17  /   
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