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Cognitive radio (CR) has been recently proposed as a promising technology to improve spectrum utilization by enabling secondary access to unused licensed bands. A prerequisite to this secondary access is having no interference to the primary system. This requirement makes spectrum sensing a key function in cognitive radio systems. Among common spectrum sensing techniques, energy detection is an engaging method due to its simplicity and efficiency. However, the major disadvantage of energy detection is the hidden node problem, in which the sensing node cannot distinguish between an idle and a deeply faded or shadowed band. Cooperative spectrum sensing (CSS) which uses a distributed detection model has been considered to overcome that problem. On other dimension of this cooperative spectrum sensing, this is vulnerable to sensing data falsification attacks due to the distributed nature of cooperative spectrum sensing. As the goal of a sensing data falsification attack is to cause an incorrect decision on the presence/absence of a PU signal, malicious or compromised SUs may intentionally distort the measured RSSs and share them with other SUs.
Shribala Nagul, Dr. Srihari, Dr. B C Jinaga. 2014. "Spectrum Sensing and Security Challenges and Solutions: Contemporary Affirmation of the Recent Literature". Global Journal of Computer Science and Technology - E: Network, Web & Security GJCST-E Volume 14 (GJCST Volume 14 Issue E5).
Crossref Journal DOI 10.17406/gjcst
Print ISSN 0975-4350
e-ISSN 0975-4172
v1.2
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Total Score: 153
Country: India
Subject: Global Journal of Computer Science and Technology
Authors: N. Shribala, Dr. Srihari, Dr. B C Jinaga (PhD/Dr. count: 2)
View Count (all-time): 371
Total Views (Real + Logic): 2336
Total Downloads (simulated): 99
Publish Date: 2014 01, Wed
Monthly Totals (Real + Logic):
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