Presentation 2015-11-06
High Frequency Radio Environment Recognition based on Undersampling
Nobuaki Kuno, Yuki Morimoto, Yoshio Karasawa,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Recently, such as cognitive radio which is changing the available frequency band adaptively, the research of advanced wireless communication systems which use a wide frequency band has become popular. In these systems, interference problem is caused frequently by the unwanted signal with strong input level, because receivers has wide receiving band. For such interference signals, it is required to suppress at the front end of the receiver, and it is necessary to detect the interference frequency. In this report, we propose a detection method of the frequency of any high-frequency signal, using a low-speed A/D converter which has two channels. Moreover, we propose simple detection method using a weighted average of interference signal power which is very strong than that of the desired wave, and show the validity by computer simulation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Cognitive radio / Non-linear problem of receiving system / Under-sampling
Paper # RCS2015-225
Date of Issue 2015-10-28 (RCS)

Conference Information
Committee AP / RCS / WPT / SAT
Conference Date 2015/11/4(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Okinawa Prefectural Museum & Art Museum
Topics (in Japanese) (See Japanese page)
Topics (in English) Antenna and Propagation, Radio Communication, Satelite Communication, Wireless Power Transfer
Chair Keizo Cho(Chiba Inst. of Tech.) / Makoto Taromaru(Fukuoka Univ.) / Naoki Shinohara(Kyoto Univ.) / Morio Toyoshima(NICT)
Vice Chair Hisato Iwai(Doshisha Univ.) / Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) / / Takatoshi Sugiyama(Kogakuin Univ.) / Toshinori Susuki(Tohoku Gakuin Univ.)
Secretary Hisato Iwai(KDDI R&D Labs.) / Hidekazu Murata(Niigata Univ.) / Satoshi Denno(Mitsubishi Electric) / Yukitoshi Sanada(NTT DoCoMo) / (Kagoshima Univ.) / Takatoshi Sugiyama(Toyohashi Univ. of Tech.) / Toshinori Susuki(NICT)
Assistant Yuichi Kimura(Saitama Univ.) / Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) / Takashi Hikagae(Hokkaido Univ.) / Tsunayuki Yamamoto(Yamaguchi Univ.)

Paper Information
Registration To Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems / Technical Committee on Wireless Power Transfer / Technical Committee on Satellite Telecommunications
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) High Frequency Radio Environment Recognition based on Undersampling
Sub Title (in English)
Keyword(1) Cognitive radio
Keyword(2) Non-linear problem of receiving system
Keyword(3) Under-sampling
1st Author's Name Nobuaki Kuno
1st Author's Affiliation The University of Electro-Communications(UEC)
2nd Author's Name Yuki Morimoto
2nd Author's Affiliation The University of Electro-Communications(UEC)
3rd Author's Name Yoshio Karasawa
3rd Author's Affiliation The University of Electro-Communications(UEC)
Date 2015-11-06
Paper # RCS2015-225
Volume (vol) vol.115
Number (no) RCS-288
Page pp.pp.209-214(RCS),
#Pages 6
Date of Issue 2015-10-28 (RCS)