Journal
IEEE COMMUNICATIONS LETTERS
Volume 23, Issue 11, Pages 1935-1939Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2019.2934410
Keywords
Physical layer security; cooperative NOMA; jammer; secrecy outage probability
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Funding
- Ministry of Oceans and Fisheries, Korea
- MSIT (Ministry of Science and ICT), Korea, under the ITRC (Information Technology Research Center) support program [IITP-2019-2018-08-01417]
- National Natural Science Foundation of China [61772195]
- Natural Science Foundation of Hunan Province [2018JJ2156, 2018JJ2154, 2018JJ3210]
- 13th Five-years Plan of Education Science Program of Hunan Province [XJK17BXX004]
- Outstanding Youth Project of Hunan Provincial Education Department [18B353]
- Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea [2018-0-01417-002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Korea Institute of Marine Science & Technology Promotion (KIMST) [201503702] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This letter investigates a jammer-aided cooperative non-orthogonal multiple access (NOMA) system, where one relay is used to deliver information and other relays are acted as jammers. Two simple relay selection (RS) strategies, e.g., random RS and max-min RS, are considered in this letter. Analytical and asymptotical expressions for secrecy outage probability (SOP) under both RS schemes are developed. Simulation results show that NOMA system with jammer achieves a lower SOP than the one without jammer in the moderate to high SNR range. Moreover, by adopting max-min RS strategy, the secrecy outage performance can be further improved in the low SNR region, while still tends to a constant in high SNR region.
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