NDLI: A weighted fusion scheme for cooperative spectrum sensing based on past decisions

Content Provider	IEEE Xplore Digital Library
Author	Khalid, L. Anpalagan, A.
Copyright Year	2011
Description	Author affiliation: Department of Electrical and Computer Engineering, Ryerson University, Toronto, Canada (Khalid, L.; Anpalagan, A.)
Abstract	Cooperative spectrum sensing is employed in cognitive radio networks to reliably detect the primary users' transmissions by fusing the sensed data of individual secondary users. In this paper, we propose a new weighted fusion scheme, in which the reliability of the secondary users' local decisions are considered when making a final decision at the fusion center. We use past information about the local and global decisions to estimate the reliability of the sensing decision obtained from each secondary user. This difference in reliability is reflected in the weighting of each secondary user's decision when combined at the fusion center. Simulations are provided to compare the performance of the proposed scheme to the OR, AND, Equal Weight and Signal-to-Noise Ratio (SNR) based Weight fusion schemes. Results show that our proposed scheme provides performance improvement for cooperative spectrum sensing when compared to the other fusion schemes.
Starting Page	354
Ending Page	358
File Size	287561
Page Count	5
File Format	PDF
ISBN	9781457713460
e-ISBN	9781457713484
e-ISBN	9781457713477
DOI	10.1109/PIMRC.2011.6139981
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-11
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cognitive radio Detectors Reliability theory Signal to noise ratio Adaptive systems
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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