On physical layer security of multiple-relay assisted NOMA systems

Hongjiang Lei, Zixuan Yang, Ki Hong Park, Imran Shafique Ansari, Gaofeng Pan, Mohamed Slim Alouini

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摘要

This paper considers the secrecy outage performance of a multiple-relay assisted non-orthogonal multiple access (NOMA) network over Rayleigh fading channels. Two slots are utilized to transmit signals from the base station to destination. In the first slot, the base station broadcasts the superposition signal of two users to all decode-and-forward relays by message mapping strategy. Then the selected relay transmits superposition signal to the two users via power-domain NOMA. Two relay selection (RS) schemes, i.e., optimal single relay selection (OSRS) scheme and two-step single relay selection (TSRS) scheme, are proposed. As a benchmark, we also examine the secrecy outage performance of the traditional multiple relays combining (TMRC) scheme. The closed- form expressions for the security outage probability (SOP) of the proposed schemes are derived and validated via simulations. To get more insights, we also derive the closed-form expressions for the asymptotic SOP for all the schemes with fixed and dynamic power allocations. Monte-Carlo simulations are performed to verify our analytical results.

源语言英语
主期刊名2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings
出版商Institute of Electrical and Electronics Engineers Inc.
ISBN(电子版)9781728123738
DOI
出版状态已出版 - 5月 2019
已对外发布
活动2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Shanghai, 中国
期限: 20 5月 201924 5月 2019

出版系列

姓名2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings

会议

会议2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019
国家/地区中国
Shanghai
时期20/05/1924/05/19

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引用此

Lei, H., Yang, Z., Park, K. H., Ansari, I. S., Pan, G., & Alouini, M. S. (2019). On physical layer security of multiple-relay assisted NOMA systems. 在 2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings 文章 8756959 (2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCW.2019.8756959