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http://dx.doi.org/10.6109/jkiice.2016.20.3.558

Secrecy Enhancement via Artificial Noise with Protected Zones of Transmitter and Receiver  

Chae, Seong Ho (School of Electrical Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.20, no.3, 2016 , pp. 558-564 More about this Journal
Abstract
The network interference gives positive and negative effects to security and QoS simultaneously by disturbing the decoding of receiver and eavesdropper. The transmission of artificial noise enables to indirectly control these contradicting effects. This paper proposed the secrecy enhancement technique via artificial noise with protected zones of transmitter and receiver and investigated its gain by using stochastic geometry. For given arbitrary artificial noise power ratio, we first analyzed connection outage probability and secrecy outage probability for four different scenarios (separated, overlapped, included secrecy protected zones- type A, B) according to distance and size of protected zones of the transmitter and receiver. We then derive the secrecy transmission rate and find the optimal artificial noise power ratio to maximize it. Finally, with numerical examples, we investigate the effects of the system parameters such as size of protected zones of transmitter and receiver on the optimal artificial noise power ratio.
Keywords
Physical Layer Security; Secrecy Transmission Rate; Artificial Noise; Protected Zones;
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