Power allocation and cooperative jamming for enhancing physical layer security in opportunistic relay networks in the presence of interference
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2017-04-18Online Publication Date
2017-04-18Print Publication Date
2017-11Permanent link to this record
http://hdl.handle.net/10754/623441
Metadata
Show full item recordAbstract
In this paper, the impact of cochannel interference on the secrecy performance of dual-hop decode-and-forward relaying is investigated. In particular, the outage and intercept probabilities are obtained for the opportunistic relay selection (ORS) model in the presence of nonidentical interfering signals under a single/multiple passive eavesdropper(s) attack. Moreover, the proposed work enhances physical layer security performance of ORS model using cooperative jamming (CJ) techniques. Therefore, new closed-form expressions are derived for the intercept and outage probabilities of the CJ-ORS model in the presence of interference over Rayleigh fading channels. Moreover, the analyses are generalized to the case of multiple eavesdroppers where closed-form expressions are derived for the intercept probability. To reveal more insights on the proposed work secrecy performance, asymptotic closed-form expressions for the intercept and outage probabilities are obtained. Using these asymptotic expressions, a power allocation optimization problem is formulated and solved for enhancing the system security. The derived analytical formulas herein are supported by numerical and simulation results to clarify the main contributions of the paper. The results show that, although the cochannel interference increases the system outage probability, it might improve the system secrecy performance. Moreover, the proposed CJ-ORS model is shown to enhance the system secrecy performance compared to ORS model.Citation
Abd El-Malek AH, Salhab AM, Zummo SA, Alouini M-S (2017) Power allocation and cooperative jamming for enhancing physical layer security in opportunistic relay networks in the presence of interference. Transactions on Emerging Telecommunications Technologies: e3178. Available: http://dx.doi.org/10.1002/ett.3178.Sponsors
The authors acknowledge the support provided by King Fahd University of Petroleum and Minerals (KFUPM) under grant no. RG1416ȁ1 and RG1416ȁ2. The authors would like also to acknowledge the KFUPMȁKAUST research initiative resulted from this research work.Publisher
WileyDOI
10.1002/ett.3178Additional Links
http://onlinelibrary.wiley.com/doi/10.1002/ett.3178/fullae974a485f413a2113503eed53cd6c53
10.1002/ett.3178