Secure communication of intelligent reflecting surface-aided NOMA in massive MIMO networks

IF 4.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

Computer Communications Pub Date : 2024-07-18 DOI:10.1016/j.comcom.2024.07.003

Bahar Hazrati

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引用次数: 0

Abstract

A Non-Orthogonal Multiple Access (NOMA) network, in which the base station (BS) incorporates massive Multiple-Input Multiple-Output (MIMO) technology, is considered in this paper. This research study focuses on investigating physical layer security in this network when a jammer is present, leveraging intelligent Reflecting Surface (IRS) technology. The IRS is an innovative approach strategically implemented to enhance communication quality by assisting distant users in establishing a reliable connection with the BS. Two key metrics in physical layer security are evaluated: the secrecy rate (SR) for pairs of NOMA users and the secrecy outage probability (SOP). Additionally, the impact of using a jammer is assessed by comparing the network’s performance with and without a jammer. The results indicate that by increasing in the antenna numbers, the rate of secrecy is improved, and the SOP is decreased. Moreover, as the transmit signal-to-noise ratio (SNR) increases, the SR is enhanced, but the SOP is degraded. However, the increase in the IRS element numbers results in a tendency for the SOP to rise. Furthermore, it is evident that incorporating a jammer improves the network’s performance.

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大规模多输入多输出网络中智能反射面辅助 NOMA 的安全通信

本文考虑的是一种非正交多址接入（NOMA）网络，其中基站（BS）采用了大规模多输入多输出（MIMO）技术。本研究的重点是利用智能反射面 (IRS) 技术，调查干扰器存在时该网络的物理层安全性。IRS 是一种战略性的创新方法，通过协助远方用户与 BS 建立可靠连接来提高通信质量。对物理层安全性的两个关键指标进行了评估：NOMA 用户对的保密率 (SR) 和保密中断概率 (SOP)。此外，通过比较有干扰器和无干扰器时的网络性能，评估了使用干扰器的影响。结果表明，随着天线数量的增加，保密率得到提高，SOP 下降。此外，随着发射信噪比（SNR）的增加，SR 得到提高，但 SOP 下降。然而，随着 IRS 信元数量的增加，SOP 有上升的趋势。此外，加入干扰器显然能提高网络性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computer Communications 工程技术-电信学

CiteScore

14.10

自引率

5.00%

发文量

397

审稿时长

66 days

期刊介绍： Computer and Communications networks are key infrastructures of the information society with high socio-economic value as they contribute to the correct operations of many critical services (from healthcare to finance and transportation). Internet is the core of today''s computer-communication infrastructures. This has transformed the Internet, from a robust network for data transfer between computers, to a global, content-rich, communication and information system where contents are increasingly generated by the users, and distributed according to human social relations. Next-generation network technologies, architectures and protocols are therefore required to overcome the limitations of the legacy Internet and add new capabilities and services. The future Internet should be ubiquitous, secure, resilient, and closer to human communication paradigms. Computer Communications is a peer-reviewed international journal that publishes high-quality scientific articles (both theory and practice) and survey papers covering all aspects of future computer communication networks (on all layers, except the physical layer), with a special attention to the evolution of the Internet architecture, protocols, services, and applications.