Active RIS-NOMA-Aided Covert Communication with Hardware Impairments

Peng Chen; Liang Yang; Hongwu Liu; Gaofeng Pan; Yanlong Li; Zhi Yan

doi:10.1109/LWC.2023.3318584

Active RIS-NOMA-Aided Covert Communication with Hardware Impairments

Peng Chen, Liang Yang, Hongwu Liu, Gaofeng Pan, Yanlong Li, Zhi Yan^*

^*Corresponding author for this work

School of Cyberspace Science and Technology

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

In this letter, we investigate an active reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA)-aided covert communication system with hardware impairments, where a base station conducts NOMA downlink transmissions to a covert user and a public user. More specifically, we derive the analytic expressions for the outage probability (OP), the detection error probability (DEP), and optimal detection thresholds. Then, we study the influence of detection threshold, RIS deployment location, and power distribution factor on the covert performance. Compared to the passive RIS system with the same total power budget, numerical results show that the active RIS system achieves better covert performance and effectively overcomes the double path-loss attenuation.

Original language	English
Pages (from-to)	2278-2282
Number of pages	5
Journal	IEEE Wireless Communications Letters
Volume	12
Issue number	12
DOIs	https://doi.org/10.1109/LWC.2023.3318584
Publication status	Published - 1 Dec 2023

Keywords

Active reconfigurable intelligent surface
covert communication
hardware impairments
non-orthogonal multiple access

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10.1109/LWC.2023.3318584

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title = "Active RIS-NOMA-Aided Covert Communication with Hardware Impairments",

abstract = "In this letter, we investigate an active reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA)-aided covert communication system with hardware impairments, where a base station conducts NOMA downlink transmissions to a covert user and a public user. More specifically, we derive the analytic expressions for the outage probability (OP), the detection error probability (DEP), and optimal detection thresholds. Then, we study the influence of detection threshold, RIS deployment location, and power distribution factor on the covert performance. Compared to the passive RIS system with the same total power budget, numerical results show that the active RIS system achieves better covert performance and effectively overcomes the double path-loss attenuation.",

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AU - Chen, Peng

AU - Yang, Liang

AU - Liu, Hongwu

AU - Pan, Gaofeng

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AU - Yan, Zhi

PY - 2023/12/1

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AB - In this letter, we investigate an active reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA)-aided covert communication system with hardware impairments, where a base station conducts NOMA downlink transmissions to a covert user and a public user. More specifically, we derive the analytic expressions for the outage probability (OP), the detection error probability (DEP), and optimal detection thresholds. Then, we study the influence of detection threshold, RIS deployment location, and power distribution factor on the covert performance. Compared to the passive RIS system with the same total power budget, numerical results show that the active RIS system achieves better covert performance and effectively overcomes the double path-loss attenuation.

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Active RIS-NOMA-Aided Covert Communication with Hardware Impairments

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