Secrecy Performance Analysis of the NOMA System on High-Speed Railway

Abstract EN

High-speed railway (HSR) wireless communications are required to ensure strict security.

In this work, we study the secrecy performance of a nonorthogonal multiple access- (NOMA-) aided HSR wireless communication system in the case of an eavesdropping user.

Specifically, applying NOMA technology to the HSR communication system can effectively improve the data rates.

Therefore, we study the secrecy performance of the downlink NOMA system under the HSR wireless communication.

In particular, the exact analytical results for the secrecy outage probability (SOP) based on no small-scale channel state information (CSI) are derived.

We also provide all of the parameterizations for the proposed channel model.

Finally, the correctness of theoretical derivation is verified via simulations.

Results show the positive effect of utilizing the NOMA for enhancing wireless systems secrecy performance.