STAR-IOS Assisted NOMA Networks With EMI: Outage Analysis and Optimization

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Vehicular Technology Pub Date : 2025-03-26 DOI:10.1109/TVT.2025.3554574

Qiang Sun;Mengfan You;Xingjian Jiang;Xiaomin Chen;Chongwen Huang;Jiayi Zhang

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Abstract

Integrating simultaneous reflecting and transmitting intelligent omini-surfaces (STAR-IOS) with non-orthogonal multiple access (NOMA) brings necessary spatial 360

$^{\circ }$

coverage and high spectral efficiency for wireless communication networks. However, electromagnetic interference (EMI) inevitably exists in such networks, and its impact on system performance is often overlooked. In this paper, we investigate a downlink STAR-IOS-assisted NOMA network with EMI, and derive closed-form expressions for the outage probability of paired NOMA devices based on three STAR-IOS protocols, namely, the energy splitting protocol, the time switching protocol, and the mode switching protocol. Moreover, to further enhance performance, we employ a gradient projection method to mitigate the impact of EMI. The numerical results show that the EMI negatively impacts the outage performance of devices, especially for the near device in the NOMA pair. In addition, the gradient projection method improves outage performance by adjusting the phase of STAR-IOS based on EMI statistics.

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STAR-IOS辅助NOMA网络与EMI：中断分析和优化

将同时反射和同时发射的智能曲面（STAR-IOS）与非正交多址（NOMA）相结合，为无线通信网络提供了必要的空间360$^{\circ}$覆盖和高频谱效率。然而，在这种网络中不可避免地存在电磁干扰（EMI），其对系统性能的影响往往被忽视。本文研究了一种具有EMI的下行STAR-IOS辅助NOMA网络，并基于能量分裂协议、时间交换协议和模式交换协议，导出了配对NOMA设备中断概率的封闭表达式。此外，为了进一步提高性能，我们采用梯度投影方法来减轻EMI的影响。数值结果表明，电磁干扰对器件的中断性能有负面影响，特别是对NOMA对中的近端器件。此外，梯度投影法通过基于EMI统计调整STAR-IOS的相位来提高停电性能。

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

IEEE Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.