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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SRW | 2014-06-16 13:00 |
Kanagawa | Mitsubishi Electric | Study of Propagation Loss Model for Short Range Communications in TV White Space Band Using Low Base Station Antenna Height Tomoshige Kan (Tokyo Inst. of Tech.), Hirokazu Sawada, Keiichi Mizutani, Chunyi Song, Kentaro Ishizu, Homare Murakami, Hiroshi Harada (NICT), Jun-ichi Takada (Tokyo Inst. of Tech.)  SRW2014-6 |
In this study, we investigate a propagation loss model for usage of TV White Space (TVWS) by secondary users (SU). Conve... [more] | SRW2014-6 pp.29-34 |
| 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 |
| RCS, SR, SRW (Joint) |
2014-03-04 10:05 |
Tokyo | Waseda Univ. | A Study on Propagation Loss Model for TV White Space Systems Hirokazu Sawada, Tomoshige Kan, Keiichi Mizutani, Kentaro Ishizu, Homare Murakami, Hiroshi Harada (NICT) SR2013-106 |
[more] | SR2013-106 pp.69-74 |
| RCS, SR, SRW (Joint) |
2014-03-05 10:05 |
Tokyo | Waseda Univ. | A study of optimum resource utilization on FDD/TDD White Space LTE System Homare Murakami (NICT/Univ. of Tokyo), Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Keiichi Mizutani, Hirokazu Sawada, Hiroshi Harada (NICT), Mikio Hasegawa (Tokyo Univ. of Science/NICT), Hiroyuki Morikawa (Univ. of Tokyo) RCS2013-367 |
White space LTE (WS LTE) is studied as a candidate technique for improving the shortage situation of the spectrum especi... [more] | RCS2013-367 pp.371-376 |
| SR | 2013-10-25 14:40 |
Osaka | Osaka Univ. | Measurements of Propagation Characteristics for Short Distances Using Low Base Station Antenna Height in UHF Band Tomoshige Kan (Tokyo Inst. of Tech.), Hirokazu Sawada, Chunyi Song, Hiroshi Harada (NICT), Jun-ichi Takada (Tokyo Inst. of Tech.) SR2013-71 |
TV White Space (TVWS) is expected to be widely used to realize efficient frequency utilization. When utilizing TVWS, sec... [more] | SR2013-71 pp.105-109 |
| SR | 2013-10-25 15:05 |
Osaka | Osaka Univ. | Measurements of UHF Band Building Penetration and Transmission Losses Hirokazu Sawada (NICT), Tomoshige Kan (Tokyo Inst. of Tech.), Chunyi Song, Hiroshi Harada (NICT) SR2013-72 |
For white space utilization promotion, a short range path loss model to estimated the secondary user’s area is required.... [more] | SR2013-72 pp.111-115 |
| SRW | 2013-10-21 10:20 |
Kanagawa | NICT@YRP | Measurements of Received Power Distribution for Indoor communications in UHF Band Tomoshige Kan (Tokyo Inst. of Tech.), Hirokazu Sawada, Chunyi Song, Hiroshi Harada (NICT), Jun-ichi Takada (Tokyo Inst. of Tech.) SRW2013-30 |
In this paper, we conducted measurements of received power distributions in an office environment in the UHF band and in... [more] | SRW2013-30 pp.13-17 |
| SRW | 2013-04-19 10:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A Proposal on Arrayed RX Antenna Switching Diversity for 60 GHz Desktop Environment Hirokazu Sawada, Shuzo Kato (Tohoku Univ.), Masahiro Umehira (Ibaraki Univ.), Hiroshi Harada (NICT) SRW2013-2 |
[more] | SRW2013-2 pp.3-7 |
| SRW | 2013-04-19 13:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | 2.4 GHz Band Phased Array Beam-forming Antenna with 2 layer patch antennas Yosuke Sato, Hirokazu Sawada, Shuzo Kato (Tohoku Univ.) SRW2013-7 |
In Low energy Critical Infrastructure Monitoring (LECIM), each terminal should be driven in 5-10 years by battery and ha... [more] | SRW2013-7 pp.33-36 |
| NS, RCS (Joint) |
2012-12-14 13:30 |
Ehime | Ehime Univ. | Channel capacity affected by antenna arrangement in orthogonal polarization based MIMO transmission using 60GHz band Tatsuya Ebayashi, Masahiro Umehira (Ibaraki Univ.), Hirokazu Sawada (Tohoku Univ.) RCS2012-234 |
Although 7~9GHz bandwidth is available in 60GHz band for unlicensed use MIMO will be necessary to achieve over 10Gbps tr... [more] | RCS2012-234 pp.303-308 |
| SR, RCS, SRW (Joint) |
2012-03-08 10:15 |
Kanagawa | YRP | A 60 GHz channel model for WPAN beam switching systems Lawrence Materum, Hirokazu Sawada, Shuzo Kato (Tohoku Univ.) |
[more] | |
| MW | 2010-11-25 16:10 |
Okinawa | Tiruru | A Design of Millimeter-wave Beam-forming Antenna Yosuke Sato, Kazuya Fujita, Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato (Tohoku Univ.) MW2010-112 |
In order to realize multi-Gbps wireless communications in 60 GHz, the automatic beam control is the key to practical app... [more] | MW2010-112 pp.39-44 |
| SAT, RCS (Joint) |
2010-08-26 08:50 |
Kagoshima | Kagoshima Univ. | 60 GHz Channel Model for the Cubicle Environments Hirokazu Sawada, Kazuya Fujita, Shuzo Kato (Tohoku Univ.), Katsuyoshi Sato, Hiroshi Harada (NICT) RCS2010-77 |
In order to realize very high throughput wireless local area network (WLAN) systems, which demand multi Gbps capacities/... [more] | RCS2010-77 pp.1-4 |
| SAT, RCS (Joint) |
2010-08-26 09:10 |
Kagoshima | Kagoshima Univ. | Connectivity Probability Enhancement Using Artificial Reflectors for Millimeter Wave Communications System Shunya Takahashi, Hirokazu Sawada, Shuzo Kato (Tohoku Univ.) RCS2010-78 |
Connection probability enhancement method based on artificial reflectors has been proposed for millimeter wave communica... [more] | RCS2010-78 pp.5-8 |
| SAT, RCS (Joint) |
2010-08-26 09:30 |
Kagoshima | Kagoshima Univ. | Millimeter Wave Intra Car Communications System Using Radio Hose Kazuya Fujita, Hirokazu Sawada, Shuzo Kato (Tohoku Univ.) RCS2010-79 |
In order to lower the car’s weight, fuel consumption, this paper proposes an intra car communication system in which th... [more] | RCS2010-79 pp.9-12 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-03 11:50 |
Kanagawa | YRP | Indoor millimeter-wave channel model for high gain antennas Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato (Tohoku Univ.), Masahiro Umehira (Ibaraki Univ.), Katsuyoshi Sato, Hiroshi Harada (NICT) RCS2009-265 |
Indoor millimeter-wave channel models for high gain antennas are proposed. The indoor 60GHz channel model for wide-beam ... [more] | RCS2009-265 pp.47-52 |
| RCS, SAT (Joint) |
2009-12-18 13:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Consideration on an Orthogonal-polarization based MIMO channel model using Ray-tracing technique in Millimeter-wave WPAN Takehiko Watanabe, Masahiro Umehira (Ibaraki Univ.), Hirokazu Sawada (Tohoku Univ.) RCS2009-192 |
Aiming at short distance broadband communications, millimeter-wave WPAN and WLAN using 60GHz unlicensed-band is recently... [more] | RCS2009-192 pp.149-154 |
| RCS | 2009-08-03 11:20 |
Miyagi | Tohoku Univ. | Double Directional Propagation Measurement in Office Environment at 60GHz band Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato (Tohoku Univ.), Masahiro Umehira (Ibaraki Univ.), Katsuyoshi Sato, Hiroshi Harada (NICT) RCS2009-83 |
To investigate the effect of beam-forming technology at 60GHz band millimeter-wave indoor communications, the double dir... [more] | RCS2009-83 pp.31-35 |
| MW | 2009-03-06 14:50 |
Tokyo | NHK Science & Technical Research Lab. | 60GHz Band Conical Horn Antenna with Choke Structure for Broad Beamwidth Kaoru Yaginuma, Hirokazu Sawada, Yuki Kawahara, Tsukasa Yoneyama (Tohoku Inst. of Tech.) MW2008-202 |
In this paper, a conical horn antenna with a choke is described. The antenna was designed and fabricated to obtain the b... [more] | MW2008-202 pp.71-74 |
| MW | 2009-03-06 17:10 |
Tokyo | NHK Science & Technical Research Lab. | High-Speed BPSK Modulator and Demodulator for 60GHz Band by NRD-Guide Yuki Kawahara (MMEx), Hirokazu Sawada, Tsukasa Yoneyama (Tohoku Institute of Tech.) MW2008-208 |
A high-speed BPSK modulator and demodulator have been constructed by using NRD-guide technology at 60GHz. The NRD-guide ... [more] | MW2008-208 pp.105-110 |
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