%0 Journal Article
%A CHENG Wenjie
%A LU Zhaoming
%A YANG Xiaoxia
%A LI Meiling
%T Physical Layer Security for CR-NOMA System in Vehicle-to-Everything
%D 2022
%R 10.13190/j.jbupt.2021-085
%J Journal of Beijing University of Posts and Telecommunications
%P 115-120
%V 45
%N 1
%X Cognitive radio non-orthogonal multiple access (CR-NOMA) can meet large-scale connection requirements of the fifth generation of mobile communications system, and satisfy the demands of low latency, low power consumption and wide coverage of vehicle-to-everything communications. The physical layer security of the primary user of cooperative CR-NOMA network based on vehicle-to-everything is analyzed by deriving the secrecy outage probability. The influences of the transmission signal-to-noise ratio of secondary user, the number of secondary users, the target rate and the power allocation coefficient on the secrecy outage probability of primary user are studied. Both analysis and simulation results show that, in the presence of eavesdropper, the secrecy outage probability of the primary user of the considered network can be reduced by increasing the transmission signal-to-noise ratio of secondary user, appropriately selecting the number of secondary users and setting a proper target rate to improve the physical layer security.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2021-085