Reference : Joint optimization for secure ambient backscatter communication in NOMA-enabled IoT n...
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
Security, Reliability and Trust
http://hdl.handle.net/10993/54091
Joint optimization for secure ambient backscatter communication in NOMA-enabled IoT networks
English
[en] Joint optimization for secure ambient backscatter communication in NOMA-enabled IoT networks
Khan, Wali Ullah mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Jameel, Furqan []
Ihsan, Asim mailto []
Waqar, Omer mailto []
Ahmed, Manzoor []
30-Mar-2022
Digital Communications and Networks
Elsevier
Yes
International
2352-8648
Amsterdam
Netherlands
[en] Backscatter Communications ; Non-orthogonal Multiple Access ; Physical layer security
[en] Non-Orthogonal Multiple Access (NOMA) has emerged as a novel air interface technology for massive connectivity in sixth-generation (6G) era. The recent integration of NOMA in Backscatter Communication (BC) has triggered significant research interest due to its applications in low-powered Internet of Things (IoT) networks. However, the link security aspect of these networks has not been well investigated. This article provides a new optimization framework for improving the physical layer security of the NOMA ambient BC system. Our system model takes into account the simultaneous operation of NOMA IoT users and the Backscatter Node (BN) in the presence of multiple EavesDroppers (EDs). The EDs in the surrounding area can overhear the communication of Base Station (BS) and BN due to the wireless broadcast transmission. Thus, the chief aim is to enhance link security by optimizing the BN reflection coefficient and BS transmit power. To gauge the performance of the proposed scheme, we also present the suboptimal NOMA and conventional orthogonal multiple access as benchmark schemes. Monte Carlo simulation results demonstrate the superiority of the NOMA BC scheme over the pure NOMA scheme without the BC and conventional orthogonal multiple access schemes in terms of system secrecy rate.
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/10993/54091
10.1016/j.dcan.2022.03.017
https://www.sciencedirect.com/science/article/pii/S2352864822000384

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