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    Power allocation and cooperative jamming for enhancing physical layer security in opportunistic relay networks in the presence of interference

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    Type
    Article
    Authors
    Abd El-Malek, Ahmed H. cc
    Salhab, Anas M.
    Zummo, Salam A.
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2017-04-18
    Online Publication Date
    2017-04-18
    Print Publication Date
    2017-11
    Permanent link to this record
    http://hdl.handle.net/10754/623441
    
    Metadata
    Show full item record
    Abstract
    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
    Wiley
    Journal
    Transactions on Emerging Telecommunications Technologies
    DOI
    10.1002/ett.3178
    Additional Links
    http://onlinelibrary.wiley.com/doi/10.1002/ett.3178/full
    ae974a485f413a2113503eed53cd6c53
    10.1002/ett.3178
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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