Abstract: Energy detection is one of the popular spectrum sensing technique for cognitive radio. Better performance can be obtained by cooperative detection, but only when cognitive radios did not have different geographic locations and channel environment. To avoid this drawback, the paper presents an improved energy-based weighted cooperative spectrum sensing method which allows to achieve higher detection probability, to reduce the number of cognitive nodes involved in the detection procedure and to use efficiently the channel resources

• Publication Date: 02-Jun-2014
• DOI: 10.15224/978-1-63248-010-1-33
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Abstract: Inconsistency in access control policies exists when two or more than two rules defined in the policy set lead to the contradictory decisions. It makes it difficult for the system to decide which rule is applicable to the current scenario and hence make the system vulnerable to the unauthorized use. Different inconsistency detection methods have been proposed by researchers. However, those suffer from various limitations. In this article, we propose an algorithm that detects the inconsistencies in the policies using decision trees and returns the inconsistent rules with contradictory attribute values

• Publication Date: 02-Jun-2014
• DOI: 10.15224/978-1-63248-010-1-34
• Views: 0
• Downloads: 0