Presentation 2015-05-28
Prototype of IEEE 802.11af-based High Power Communication Devices and Field Experiment in London
Takeshi Matsumura, Kentaro Ishizu, Keiichi Mizutani, Homare Murakami, Fumihide Kojima, Hiroshi Harada,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) TV white-space (TVWS) communication systems have been globally researched and developed due to its wide frequency range and superior propagation characteristics. Also, an output power of EIRP +36 dBm is permitted as the maximum output power for fixed devices in some operational rules regulated in the U.S.A., the U.K., etc., and thus, the TVWS has been strongly expected for the long distance transmission systems. On the other hand, stern RF characteristics, e.g. adjacent channel power leakage, are required for the hardware prototypes not to interfere with primary users and there are still some challenges to enable high output power without interference. In this study, IEEE 802.11af-based hardware prototypes with a high output power of +30 dBm at the antenna port have been developed. RF characteristics of the prototypes comply with the operational rule regulated by the Ofcom. In addition, field experiment of long distance transmission system was performed in London urban area.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) TV white-spaces (TVWS) / Spectrum sharing / IEEE 802.11af / Prototype with high output power / Long distance transmission system
Paper # SR2015-3
Date of Issue 2015-05-21 (SR)

Conference Information
Committee SR
Conference Date 2015/5/28(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Akashi-Sangyou-Koryu-Center
Topics (in Japanese) (See Japanese page)
Topics (in English) Cognitive radio, Efficient spectrum utilization, Software defined radio, etc.
Chair Kei Sakaguchi(Osaka Univ.)
Vice Chair Takeo Fujii(Univ. of Electro-Comm.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.)
Secretary Takeo Fujii(Tohoku Univ.) / Kenta Umebayashi(Shinshu Univ.)
Assistant Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT)

Paper Information
Registration To Technical Committee on Smart Radio
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Prototype of IEEE 802.11af-based High Power Communication Devices and Field Experiment in London
Sub Title (in English)
Keyword(1) TV white-spaces (TVWS)
Keyword(2) Spectrum sharing
Keyword(3) IEEE 802.11af
Keyword(4) Prototype with high output power
Keyword(5) Long distance transmission system
1st Author's Name Takeshi Matsumura
1st Author's Affiliation National Institute of Information and Communications Technology(NICT)
2nd Author's Name Kentaro Ishizu
2nd Author's Affiliation National Institute of Information and Communications Technology(NICT)
3rd Author's Name Keiichi Mizutani
3rd Author's Affiliation Kyoto University(Kyoto Univ.)
4th Author's Name Homare Murakami
4th Author's Affiliation National Institute of Information and Communications Technology(NICT)
5th Author's Name Fumihide Kojima
5th Author's Affiliation National Institute of Information and Communications Technology(NICT)
6th Author's Name Hiroshi Harada
6th Author's Affiliation Kyoto University(Kyoto Univ.)
Date 2015-05-28
Paper # SR2015-3
Volume (vol) vol.115
Number (no) SR-62
Page pp.pp.13-18(SR),
#Pages 6
Date of Issue 2015-05-21 (SR)