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Security issues of spectrum sensing have drawn a lot of attentions in Cognitive radio networks (CRNs). Malicious users can mislead the network to make wrong decision about the states of channels by tampering spectrum sensing data. To defense against Spectrum sensing data falsification (SSDF) attack, we propose a neighbor detection-based spectrum sensing algorithm in distributed CRNs, which can detect...
In distributed cognitive radio network(CRN), it is always not available to collect the sensing results from all cognitive users due to the lack of a common fusion center, which makes it critical to keep consistency and reliability of the spectrum sensing results. For consensus-based sensing algorithm, a security and connectivity analysis is implemented. Simulation shows that if there exists one attacker...
Mobile phone (MP in the following) message is used routinely to communicate, yet the discourse analysis of it is relatively undeveloped. This article argues that this new communication channel merits detailed discourse analysis, especially the interaction differences among phone users. Using discourse analyze software Winmax2000a to analyze the interaction code, this paper tries to shed light on the...
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