Presentation 2015-05-28
Statistical Information-aided Transition Detection Method using Weighted Cooperative Sensing
Hao Wang, Takeo Fujii,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In order to improve spectrum utilization efficiency of Cognitive Radio (CR) systems, it is important for Secondary User (SU) to get knowledge about Primary User(PU)’s behavior when SU exploits opportunity to access spectrum. Radio Environment Database has recently been proposed to provide information about PU. Traditional advanced spectrum database constructed based on spectrum sensing method assumes that the transmit status of PU is always ON for updating the database information. However, it is not appropriate for recognizing in realistic environment because most of wireless systems does not always send the signal. In this paper, we propose a transition detection method using weighted cooperative sensing to construct a spectrum database for storing the power of PU obtained from sensor nodes. In the proposed method, the database gathers the information from sensor nodes and provides the previously stored information to generate the weight coefficient at the spectrum shared SUs. Then, we use a weighted cooperative sensing method to make a transition detection of PU behavior. Simulation results show that the proposed method can achieve a higher transition detection precision and the difference between the estimated transition point and the real transition point is smaller than the individual sensing.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Cognitive Radio / Radio Environment Database / Spectrum Sensing / Energy Detection / Transition point Detection
Paper # SR2015-1
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) Statistical Information-aided Transition Detection Method using Weighted Cooperative Sensing
Sub Title (in English)
Keyword(1) Cognitive Radio
Keyword(2) Radio Environment Database
Keyword(3) Spectrum Sensing
Keyword(4) Energy Detection
Keyword(5) Transition point Detection
1st Author's Name Hao Wang
1st Author's Affiliation University of Electro-Communications(UEC)
2nd Author's Name Takeo Fujii
2nd Author's Affiliation University of Electro-Communications(UEC)
Date 2015-05-28
Paper # SR2015-1
Volume (vol) vol.115
Number (no) SR-62
Page pp.pp.1-6(SR),
#Pages 6
Date of Issue 2015-05-21 (SR)