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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SR, RCC, MICT, RCS, SRW (Joint) (2nd) |
2016-05-16 - 2016-05-17 |
Overseas | Hotel Lasaretti, Oulu, Finland | [Poster Presentation]
Advanced FPGA/ASIC Development Teemu Aura, Olga Kayo (Nokia), Jukka Lahti, Janne Janhunen (Univ. of Oulu) |
Novel 5G innovations and technologies are rapidly coming into market. One of the main requirement for the new systems is... [more] | |
| SR | 2016-01-21 13:00 |
Nagasaki | Fukue-bunka-kaikan | Analysis of low-cost Welch FFT segment size selection method for spectrum usage measurement Hiroki Iwata, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT)  SR2015-72 |
Smart Spectrum Access (SSA), which is an advanced Dynamic Spectrum Access (DSA) exploits any statistical information of ... [more] | SR2015-72 pp.1-8 |
| SR | 2016-01-21 13:25 |
Nagasaki | Fukue-bunka-kaikan | A study on threshold setting for spectrum sensing based on spectrum utilization rate Kazuhiro Hayashi, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) SR2015-73 |
In this paper, we investigate threshold setting for spectrum sensing based on statistics of spectrum usage for spectrum ... [more] | SR2015-73 pp.9-15 |
| SR | 2016-01-22 14:20 |
Nagasaki | Fukue-bunka-kaikan | A study on parameter setting method of false alarm removal for spectrum awareness Riki Mizuchi, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Miguel Lopez-Benitez (Univ. of Liverpool), Yasuo Suzuki (TUAT) SR2015-87 |
In dynamic spectrum access, statistical information of Primary User (PU) enables more reliable and efficient spectrum sh... [more] | SR2015-87 pp.101-108 |
| SR, SRW (Joint) (2nd) |
2015-10-26 09:20 |
Tokyo | KKE | [Tutorial Lecture]
Spectrum Measurement and Modeling for Spectrum Awareness in Cognitive Wireless Systems Kenta Umebayashi (TUAT), Miguel López-Benítez (Univ. of Liverpool), Janne Lehtomaki (Univ. of Oulu), Samuli Tiiro (TUAT) |
[more] | |
| 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] | |
| RCS | 2015-06-24 13:20 |
Hokkaido | Hokkaido Univ. | Multihop relay field experiment using the VHF band broadband mobile communication system in rural area Kei Yanagisawa, Tatsuya Abe, Yoshihiro Kawashima, Kiyoshi Yamamoto, Masayuki Takekawa, Masayuki Ishizaki, Tomohiro Nozaki, Junya Dosaka, Masahiro Asano, Kazue Kato (Hitachi Kokusai), Hiroshi Harada, Keiichi Mizutani (Kyoto Univ.) RCS2015-48 |
This paper describes results of relay connection test using a single frequency channel relay system in NLoS (Non-Line-of... [more] | RCS2015-48 pp.13-18 |
| RCS | 2015-06-26 10:53 |
Hokkaido | Hokkaido Univ. | Derivation of Non-uniform Linear Array Arrangement for Interference Suppression under Line-of-Sight Propagation Yoshinobu Makino, Kenta Umebayashi (TUAT), Antti Tolli (Univ. of Oulu), Yasuo Suzuki (TUAT) RCS2015-93 |
In this paper, we investigate a low-complexity method for linear array antenna arrangement to suppress interference usin... [more] | RCS2015-93 pp.275-280 |
| RCS, IN (Joint) |
2015-05-22 15:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Field experiments of VHF-band broadband mobile communication system in rural area Hiroshi Harada, Keiichi Mizutani (Kyoto Univ.), Masayuki Takekawa, Kei Yanagisawa (HiKE) RCS2015-45 |
[more] | RCS2015-45 pp.119-124 |
| 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 |
| SR | 2015-01-30 13:50 |
Hokkaido | KKR Hakodate | Welch FFT segment size selection method for Duty Cycle estimation Hiroki Iwata, Kenta Umebayashi, Samuli Tiiro (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) SR2014-110 |
In dynamic spectrum access (DSA) and the scenario with dynamic primary user (PU), spectrum sensing with reasonably low c... [more] | SR2014-110 pp.101-108 |
| SR | 2014-10-31 13:00 |
Overseas | I2R, Singapore | [Technology Exhibit]
Development of a measurement system for spectrum awareness
-- Duty estimation based on Welch-FFT -- Hiroki Iwata, Kenta Umebayashi, Riki Mizuchi, Tatsuya Maruyama, Kazuki Moriwaki, Samuli Tiiro (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) SR2014-89 |
To resolve the spectrum scarcity problem, dynamic spectrum access (DSA) has been investigated recently. In DSA, an unlic... [more] | SR2014-89 pp.171-177 |
| SR | 2014-05-22 12:45 |
Kanagawa | Toshiba Education & Training Institute | [Technology Exhibit]
Development of long-term spectrum utilization measurement system Kenta Umebayashi, Ryota Takagi, Naoki Ioroi (Tokyo Univ. of Agliculture and Tech.), Janne Lehtomaki (Univ. of OULU), Yasuo Suzuki (Tokyo Univ. of Agliculture and Tech.) SR2014-9 |
[more] | SR2014-9 pp.57-64 |
| SSS | 2014-03-13 15:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg | HOW to catch Medical Commonplace must-be Quality Hirotaka Shimizu (Hitachi Kokusai Electric) SSS2013-37 |
When we analyze medical accidents, we can find common ill factors from medical work-flow parts. Systematic management pr... [more] | SSS2013-37 pp.13-16 |
| 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 | 2014-01-24 10:50 |
Miyagi | Tohoku Univ. | Noise Floor Estimation Method with Welch FFT for Measurement of Spectrum Usage Ryota Takagi, Kenta Umebayashi (Tokyo Univ. of Agriculture and Tech.), Janne J Lehtomaki (Univ. of Oulu), Yasuo Suzuki (Tokyo Univ. of Agriculture and Tech.) SR2013-89 |
For spectrum scarcity problem, dynamic spectrum sharing has been investigated. In the dynamic spectrum sharing, new wire... [more] | SR2013-89 pp.71-76 |
| 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 |
| ASN, RCS, NS, SR (Joint) |
2013-07-18 15:45 |
Shizuoka | Hamamatsu Act City | [Poster Presentation]
A study on Robust Multiple Hypothesis Testing Approach for Dynamic Spectrum Sharing Takashi Miura, Kenta Umebayashi (TUAT), Janne J Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) NS2013-60 RCS2013-111 SR2013-49 ASN2013-78 |
This paper tackles the four-level hypothesis problem for spectrum sharing between primary users (PUs) and secondary user... [more] | NS2013-60 RCS2013-111 SR2013-49 ASN2013-78 pp.137-142(NS), pp.179-184(RCS), pp.153-158(SR), pp.165-170(ASN) |
| ASN, RCS, NS, SR (Joint) |
2013-07-18 15:45 |
Shizuoka | Hamamatsu Act City | [Poster Presentation]
A study on Time domain Efficient Decision Fusion in Cooperative Spectrum Sensing Kenta Umebayashi (Tokyo Univ. of Agriculture and Tech.), Janne J Lehtomaki (Univ. of OULU), Yasuo Suzuki (Tokyo Univ. of Agriculture and Tech.) NS2013-61 RCS2013-112 SR2013-50 ASN2013-79 |
[more] | NS2013-61 RCS2013-112 SR2013-50 ASN2013-79 pp.143-148(NS), pp.185-190(RCS), pp.159-164(SR), pp.171-176(ASN) |
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