inis 21(26): e3

Research Article

Intercept Probability Analysis of Cooperative Cognitive Networks Using Fountain Codes and Cooperative Jamming

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  • @ARTICLE{10.4108/eai.26-1-2021.168229,
        author={Tran Trung Duy and Le Chu Khan and Nguyen Thanh Binh and Nguyen Luong Nhat},
        title={Intercept Probability Analysis of Cooperative Cognitive Networks Using Fountain Codes and Cooperative Jamming},
        journal={EAI Endorsed Transactions on Industrial Networks and Intelligent Systems},
        volume={8},
        number={26},
        publisher={EAI},
        journal_a={INIS},
        year={2021},
        month={1},
        keywords={Fountain Codes, underlay cognitive radio networks, physical-layer security, cooperative jamming, intercept probability},
        doi={10.4108/eai.26-1-2021.168229}
    }
    
  • Tran Trung Duy
    Le Chu Khan
    Nguyen Thanh Binh
    Nguyen Luong Nhat
    Year: 2021
    Intercept Probability Analysis of Cooperative Cognitive Networks Using Fountain Codes and Cooperative Jamming
    INIS
    EAI
    DOI: 10.4108/eai.26-1-2021.168229
Tran Trung Duy1,*, Le Chu Khan1, Nguyen Thanh Binh1, Nguyen Luong Nhat1
  • 1: Posts and Telecommunications Institute of Technology, HoChiMinh City, Vietnam
*Contact email: trantrungduy@ptithcm.edu.vn

Abstract

This paper evaluates intercept probability (IP) of a cooperative cognitive radio network. Using Fountain codes, a secondary source continuously generates encoded packets, and sends them to secondary destination and relay nodes that attempt to receive a sufficient number of the encoded packets for recovering the source data. If the relay can sufficiently collect the packets before the destination, it replaces the source to transmit the encoded packets to the destination. Also in the secondary network, a passive eavesdropper attempts to illegally receive the packets sent by the source and relay nodes, and if it can accumulate enough encoded packets, the source data is intercepted. To enhance secrecy performance, in terms of IP, a cooperative jammer is used to transmit noises on the eavesdropper. We also propose a simple transmit power allocation method for the secondary transmitters such as source, relay and jammer so that outage performance of a primary network is not harmful. We derive an exact closed-form expression of IP over Rayleigh fading channel, and verify it by performing Monte-Carlo simulations.