Despite the high directionality of antennas in terahertz communication, there remains a risk of confidential message interception when eavesdroppers are within the beam coverage area. This paper proposes a blockage-based cooperative jamming scheme to enhance the security of terahertz communication. Due to significant signal attenuation caused by blockages in the terahertz frequency band, we select idle users with blockages between them and the typical user in the indoor three-dimensional (3D) space to act as cooperative jammers. Thus, the jamming signal can deteriorate the reception of eavesdroppers while effectively minimizing interference to the typical user. Taking into account the influence of terahertz channel characteristics, blockage, and 3D antenna model, we derive analytical expression for the secrecy outage probability (SOP). Besides, we analyze the effects of access point (AP) density, blockage density, and user idle factor on network performance. Our results demonstrate that the blockage-based cooperative jamming scheme effectively improves the secrecy performance of the terahertz network.


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    Title :

    Blockage-Based Cooperative Jamming for Secure Terahertz Transmissions in Indoor Networks


    Contributors:
    Tian, Suheng (author) / Ju, Ying (author) / Yang, Mingjie (author) / Liu, Lei (author) / Feng, Jie (author) / Pei, Qingqi (author) / Jan, Mian Ahmad (author) / Wu, Celimuge (author)


    Publication date :

    2023-10-10


    Size :

    1176734 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English