Physical Layer Security in Cognitive Radio Inspired NOMA Network

Zhongwu Xiang, Weiwei Yang*, Gaofeng Pan, Yueming Cai, Yi Song

*此作品的通讯作者

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177 引用 (Scopus)
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摘要

This paper investigates physical layer security (PLS) in cognitive radio inspired non-orthogonal multiple access (CR-NOMA) networks with multiple primary and secondary users. To manage the interferences among the users and guarantee the quality of services of primary users, a new secure NOMA transmission strategy is designed, where the primary and secondary users are paired according to their channel gains, respectively, and power-domain NOMA is employed to transmit the signal. Then, the closed-form expressions for connection outage probability, secrecy outage probability, and effective secrecy throughput are derived for the primary users over Nakagami-m fading channels when the secondary users are considered as eavesdroppers. Typically, the secrecy performance can be improved by pairing the primary users with best channel gains or reducing the number of secondary users. In addition, we also investigate the performances of secondary users by deriving the closed-form expressions for throughput of secondary network. Furthermore, simulations are conducted to verify our analysis results and provide insights into the impact of the parameters on system performance.

源语言英语
文章编号8653906
页(从-至)700-714
页数15
期刊IEEE Journal on Selected Topics in Signal Processing
13
3
DOI
出版状态已出版 - 6月 2019
已对外发布

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Xiang, Z., Yang, W., Pan, G., Cai, Y., & Song, Y. (2019). Physical Layer Security in Cognitive Radio Inspired NOMA Network. IEEE Journal on Selected Topics in Signal Processing, 13(3), 700-714. 文章 8653906. https://doi.org/10.1109/JSTSP.2019.2902103