NDLI: Dynamical clustering cooperative spectrum sensing with bandwidth constraints in CR systems

Content Provider	IEEE Xplore Digital Library
Author	Bing Wang Zhiquan Bai Yinlong Xu Peihao Dong Kyungsup Kwak
Copyright Year	2014
Description	Author affiliation: Grad. Sch. of Inf. Technol. & Telecommun., INHA Univ., Incheon, South Korea (Kyungsup Kwak) \|\| Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China (Bing Wang; Zhiquan Bai; Yinlong Xu; Peihao Dong)
Abstract	Cooperative spectrum sensing (CSS) scheme is employed to detect the primary user (PU) more quickly and accurately in cognitive radio (CR) systems. The performance of CSS scheme is usually significantly degraded when the inter-user and reporting channels experience path loss or deep fading. Meanwhile, the reporting channels are usually bandwidth limited. When the number of the secondary users (SUs) is very large, the sensing results need enormous bandwidth in the transmission. To solve this problem, a dynamical clustering CSS scheme with bandwidth constraints is proposed, where the SUs with better reporting channels are chosen as the cluster heads and the other SUs are dynamically grouped according to the inter-user channel conditions. In each cluster, the proposed scheme adopts the double thresholds scheme to make sure that only the SUs with high quality can send their sensing results. Simulation results demonstrate that the average number of sensing bits of the proposed scheme decreases greatly with a little loss in the sensing performance. This advantage is more obvious compared with the STBC based cooperative spectrum sensing scheme.
Sponsorship	IEEE Commun. Soc.
Starting Page	244
Ending Page	248
File Size	2928672
Page Count	5
File Format	PDF
e-ISBN	9788996865032
DOI	10.1109/ICACT.2014.6778933
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-02-16
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Global IT Research Institute (GIRI)
Subject Keyword	Sensors Fading Bandwidth Educational institutions Cascading style sheets Cognitive radio bandwidth constraints cooperative spectrum sensing dynamical clustering double thresholds
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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