Journal
IEEE ACCESS
Volume 7, Issue -, Pages 115568-115573Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2019.2936036
Keywords
Physical layer security; non-orthogonal multiple access; cooperative communications; full/half duplex relaying; vehicular communication
Categories
Funding
- Science and Technology Program of Hunan Province [2016TP1021]
- Natural Science Foundation of Hunan Province [2018JJ2154, 2018JJ2151, 2018JJ3210, 2018JJ2156]
- Outstanding Youth Project of Hunan Provincial Education Department [18B353]
- 13th Five-years Plan of Education Science Program of Hunan Province [XJK17BXX004]
- Key Research Foundation of Education Bureau of Hunan Province [18A320]
- Natural Science Foundation of China [61772195]
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In this paper, we consider the secrecy outage probability (SOP) of a cooperative non-orthogonal multiple access (NOMA) vehicular communication (VC) system, where the relay is working in either half-duplex (HD) or full-duplex (FD) mode. We assume that all these links experience Nakagami-m fading. Some closed-form analytical expressions for the SOP performance of the FD/HD cooperative NOMA-VC system are derived. Results show that the secrecy performance of FD-based NOMA-VC system is superior than HD-based NOMA-VC in the low signal noise ratio (SNR) region, and can be further improved by reducing the self-interference caused by FD technique. Finally, the validity of this analytical expressions is verified by using simulation. The simulation results show that the simulation curve can be fit well with our analytical results.
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