We study the secrecy sum-rate (SSR) of a multi-user system in the presence of artificial noise (AN) and determine conditions under which it is necessary to add AN assuming eavesdropper (Eve) cannot remove the interference. We first derive a closed-form expression for the asymptotic SSR of the system and determine the optimum power allocation. The closed form expressions for the SSR and optimum power allocation closely match our simulation results. We also show that as the number of receive antennas at Eve increases, we need to allocate more power to AN in order to degrade reception at Eve.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Physical Layer Security in Multi-User Wireless Networks: Interference Effect on Large Scale Analysis


    Contributors:


    Publication date :

    2020-05-01


    Size :

    245623 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    On Physical Layer Security in Finite-Area Wireless Networks: An Analysis Framework

    Liu, Jiajia / Dai, Jiahao / Shi, Yongpeng et al. | IEEE | 2017


    Enhancing Physical Layer Security in Large Intelligent Surface-aided Cooperative Networks

    Makin, Madi / Arzykulov, Sultangali / Celik, Abdulkadir et al. | IEEE | 2022