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Cognitive heterogeneous cellular networks (CHCNs) and multi-user multiple-input multiple-output (MU-MIMO) are both promising technologies in the future network where wireless transmissions are inherently vulnerable to security breaches. Under an interference constraint set by the primary user, this study examines the impact of MU-MIMO technology on secure communication between cognitive base stations...
This paper deals with the use of jamming transmission for physical layer security in wireless networks with power constraints. An approach that incorporates a dirty-paper coding (DPC) design with the jamming process under a total power constraint is investigated. The proposed scheme enables both the source and the jammer nodes to create intentional interference on the eavesdropper node and significantly...
Wireless sensor networks consist of a large number sensors spread across a given geographical area. Each sensor has its own communication capability as well as certain level of intelligence for signal processing and networking. As the sensor nodes are densely populated, communication range requirement for these nodes is smaller. After signal detection, a number of sensor nodes communicate over the...
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