Secrecy outage probability of inter-vehicular cognitive radio networks

2019 ◽  
Vol 33 (4) ◽  
pp. e4244 ◽  
Author(s):  
Serdar Özgür Ata ◽  
Eylem Erdogan
Keyword(s):  
Cognitive Radio ◽  
Outage Probability ◽  
Cognitive Radio Networks ◽  
Radio Networks ◽  
Secrecy Outage Probability ◽  
Secrecy Outage

scholarly journals Optimal Improper Gaussian Signaling for Physical Layer Security in Cognitive Radio Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Guilherme Oliveira ◽  
Evelio Fernández ◽  
Samuel Mafra ◽  
Samuel Montejo-Sánchez ◽  
César Azurdia-Meza
Keyword(s):  
Energy Efficiency ◽  
Cognitive Radio ◽  
Outage Probability ◽  
Cognitive Radio Networks ◽  
Physical Layer Security ◽  
Physical Layer ◽  
Radio Networks ◽  
Spectrum Efficiency ◽  
Secrecy Outage Probability ◽  
Secrecy Outage

The next generations of wireless communications are expected to have great demand for security and spectrum efficiency, and the current secrecy solutions may not be enough. In this paper we propose an optimization framework to address the physical layer security in cognitive radio networks when the secondary users employ improper Gaussian signaling. We resort to genetic algorithms to find optimal values of the secondary transmit power and the degree of impropriety, simultaneously. Then, two different problems regarding the system performance are solved: minimizing the secrecy outage probability and maximizing the secondary achievable rate. In both problems we evaluate, besides the secrecy outage probability, the effective secure throughput and the secure energy efficiency of the system as well. The results show that the secondary network using improper signaling outperforms conventional proper signaling in terms of secrecy outage probability and the effective secure throughput, while in terms of the secure energy efficiency, adopting proper signals attains better performance than improper ones.

scholarly journals Probability of Secrecy Outage in Cognitive Radio Networks over Rician-Fading Channels

2016 ◽  
Vol 62 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Jiliang Zhang ◽  
Hong Jiang ◽  
Gaofeng Pan
Keyword(s):  
Cognitive Radio ◽  
Fading Channels ◽  
Cognitive Radio Networks ◽  
Radio Networks ◽  
Rician Fading ◽  
Secrecy Outage Probability ◽  
Secrecy Capacity ◽  
Interference Power ◽  
Analytical Expression ◽  
Secrecy Outage

Abstract In Rician-fading scenario, cognitive radio networks (CRNs) with a source in a secondary system transmitting its confidential information to a legitimate destination in the presence of an eavesdropper, are considered in this paper. Under CRNs, the interference power reaching at primary user (PU) is limited by some pre-defined threshold. Secrecy outage not only occurs when the achievable secrecy capacity for source-destination link is smaller than a target rate, but also occurs in the case that the interference power at PU is greater than that threshold. Analytical expression for secrecy outage probability has been derived and verified with simulation results. In addition, we have also derived the analytical expression for probability of non-zero secrecy capacity.

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