Physical Layer Security for CR-NOMA System in Vehicle-to-Everything

doi:10.13190/j.jbupt.2021-085

Journal of Beijing University of Posts and Telecommunications ›› 2022, Vol. 45 ›› Issue (1): 115-120.doi: 10.13190/j.jbupt.2021-085

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Physical Layer Security for CR-NOMA System in Vehicle-to-Everything

LI Meiling¹, YANG Xiaoxia¹, CHENG Wenjie¹, LU Zhaoming²

1. School of Electronics and Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2021-05-12 Online:2022-02-28 Published:2021-12-16

Abstract

Abstract: 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.

Key words: cognitive radio, non-orthogonal multiple access, physical layer security, secrecy outage probability

CLC Number:

TN929.5

LI Meiling, YANG Xiaoxia, CHENG Wenjie, LU Zhaoming. Physical Layer Security for CR-NOMA System in Vehicle-to-Everything[J]. Journal of Beijing University of Posts and Telecommunications, 2022, 45(1): 115-120.

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Physical Layer Security for CR-NOMA System in Vehicle-to-Everything

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