NDLI: Cooperative Spectrum Sensing under Noise Uncertainty in Cognitive Radio

Content Provider	IEEE Xplore Digital Library
Author	Dong Chen Jiandong Li Jing Ma
Copyright Year	2008
Description	Author affiliation: Broadband Wireless Commun. Lab., Xidian Univ., Xian (Dong Chen; Jiandong Li; Jing Ma)
Abstract	Spectrum sensing is the key technology in Cognitive Radio (CR) for primary user detection. Noise uncertainty in spectrum sensing will make the detector unreliable due to "SNR walls". In this paper, cooperative spectrum sensing with adaptive thresholds is proposed to improve the detection performance under noise uncertainty. In this algorithm, each secondary user will use a two-thresholds detector for local detection. The thresholds are chosen according to the noise uncertainty at each secondary user. After each detection, the detection results are fused to give the final decision. Computer simulation indicates that our proposed algorithm is robust to the changes of noise uncertainties at secondary users. It can achieve better performance than cooperative spectrum sensing with one threshold or two fixed thresholds when the noise uncertainties are not equal at each secondary user.
Starting Page	1
Ending Page	4
File Size	194508
Page Count	4
File Format	PDF
ISBN	9781424421077
DOI	10.1109/WiCom.2008.295
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Uncertainty Computer simulation Laboratories Detectors Chromium Noise robustness Cognitive radio Signal to noise ratio Testing
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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