Secure Non-Orthogonal Multiple Access: An Interference Engineering Perspective

Lu Lv, Hai Jiang, Zhiguo Ding, Qiang Ye, Naofal Al-Dhahir, Jian Chen

Research output: Contribution to journalReview articlepeer-review

32 Scopus citations

Abstract

Non-orthogonal multiple access (NOMA) is an efficient approach that can improve spectrum utilization and support massive connectivity for next-generation wireless networks. However, over a wireless channel, the superimposed NOMA signals are highly susceptible to eavesdropping, potentially leading to severe leakage of confidential information. In this article, we unleash the potential of network interference and exploit it constructively to enhance physi-cal-layer security in NOMA networks. In particular, three different types of network interference, including artificial noise, specifically-designed jamming signals, and inter-user interference, are well engineered to intentionally reduce information leakage while mitigating the effect on signal reception quality of legitimate users, thereby significantly enhancing the transmission security of NOMA. Furthermore, we propose interference engineering strategies for more advanced full-duplex NOMA, intelligent reflecting surface NOMA, cognitive radio NOMA, and multi-cell NOMA networks, and discuss several open research problems and challenges, which could inspire innovative interference engineering designs for secure NOMA communications.

Original languageBritish English
Article number9263414
Pages (from-to)278-285
Number of pages8
JournalIEEE Network
Volume35
Issue number4
DOIs
StatePublished - 1 Jul 2021

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