Unveiling the Potential of NOMA: A Journey to Next-Generation Multiple Access

IF 34.4 1区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS IEEE Communications Surveys and Tutorials Pub Date : 2024-12-25 DOI:10.1109/COMST.2024.3521647

Adeel Ahmed;Xingfu Wang;Ammar Hawbani;Weijie Yuan;Hina Tabassum;Yuanwei Liu;Muhammad Umar Farooq Qaisar;Zhiguo Ding;Naofal Al-Dhahir;Arumugam Nallanathan;Derrick Wing Kwan Ng

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Abstract

The revolutionary sixth-generation wireless communications technologies and applications, notably digital twin networks (DTN), connected autonomous vehicles (CAVs), space-air-ground integrated networks (SAGINs), zero-touch networks, industry 5.0, healthcare 5.0, agriculture 5.0, and more, are driving the evolution of next-generation wireless networks (NGWNs). These innovative technologies and groundbreaking innovative applications will generate a sheer volume of data that requires the swift transmission of massive data across wireless networks and the capability to connect trillions of devices, thereby fueling the use of sophisticated next-generation multiple access (NGMA) schemes. In particular, NGMA strives to cater to the massive connectivity in the 6G era, enabling the smooth and optimized operations of NGWNs compared to existing multiple access (MA) schemes. This survey showcases non-orthogonal multiple access (NOMA) as the frontrunner for NGMA, spotlighting its novel contributions within the existing literature in terms of “What has NOMA delivered?”, “What is NOMA currently providing?” and “What lies ahead for NOMA?”. We present different variants of NOMA in this comprehensive survey, detailing their fundamental operations. In addition, this survey highlights NOMA’s applicability in a broad range of wireless communications technologies such as multi-antenna systems, machine learning, reconfigurable intelligent surfaces (RIS), cognitive radio networks (CRN), integrated sensing and communications (ISAC), terahertz networks, autonomous aerial vehicles (AAVs), etc. This survey delves deeper by providing a comprehensive literature review of NOMA’s interplay with various state-of-the-art wireless technologies. Furthermore, despite the numerous perks and advantages of NOMA, we also highlight several technical challenges of NOMA, which NOMA-assisted NGWNs may encounter. Next, we unveil the research trends of NOMA in the 6G era, offering reliable, robust, and swift communications. Finally, we offer design recommendations and insights along with the future perspectives of NOMA as the leading choice for NGMA within the realm of NGWNs.

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揭示NOMA的潜力：通往下一代多址的旅程

革命性的第六代无线通信技术和应用，特别是数字孪生网络（DTN）、联网自动驾驶汽车（cav）、空-空-地集成网络（SAGINs）、零接触网络、工业5.0、医疗5.0、农业5.0等，正在推动下一代无线网络（NGWNs）的发展。这些创新技术和突破性的创新应用将产生大量数据，需要通过无线网络快速传输海量数据，并具备连接数万亿设备的能力，从而推动复杂的下一代多址（NGMA）方案的使用。特别是NGMA致力于满足6G时代的海量连接需求，与现有的多址接入（multiple access， MA）方案相比，使NGWNs的运行更加流畅和优化。这项调查显示了非正交多址（NOMA）作为NGMA的领跑者，突出了它在现有文献中的新贡献，即“NOMA带来了什么？”、“NOMA目前提供什么？”和“NOMA的未来是什么？”在这个全面的调查中，我们提出了NOMA的不同变体，详细介绍了它们的基本操作。此外，该调查还强调了NOMA在广泛的无线通信技术中的适用性，如多天线系统、机器学习、可重构智能表面（RIS）、认知无线电网络（CRN）、集成传感和通信（ISAC）、太赫兹网络、自主飞行器（aav）等。本调查通过提供NOMA与各种最先进的无线技术相互作用的全面文献综述，进行了更深入的研究。此外，尽管NOMA有许多好处和优势，但我们也强调了NOMA辅助NGWNs可能遇到的一些技术挑战。接下来，我们将揭示6G时代NOMA的研究趋势，提供可靠、稳健、快速的通信。最后，我们提供了设计建议和见解，以及NOMA作为ngnn领域中NGMA的主要选择的未来前景。

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 Communications Surveys and Tutorials COMPUTER SCIENCE, INFORMATION SYSTEMS-TELECOMMUNICATIONS

CiteScore

80.20

自引率

2.50%

发文量

审稿时长

6 months

期刊介绍： IEEE Communications Surveys & Tutorials is an online journal published by the IEEE Communications Society for tutorials and surveys covering all aspects of the communications field. Telecommunications technology is progressing at a rapid pace, and the IEEE Communications Society is committed to providing researchers and other professionals the information and tools to stay abreast. IEEE Communications Surveys and Tutorials focuses on integrating and adding understanding to the existing literature on communications, putting results in context. Whether searching for in-depth information about a familiar area or an introduction into a new area, IEEE Communications Surveys & Tutorials aims to be the premier source of peer-reviewed, comprehensive tutorials and surveys, and pointers to further sources. IEEE Communications Surveys & Tutorials publishes only articles exclusively written for IEEE Communications Surveys & Tutorials and go through a rigorous review process before their publication in the quarterly issues. A tutorial article in the IEEE Communications Surveys & Tutorials should be designed to help the reader to become familiar with and learn something specific about a chosen topic. In contrast, the term survey, as applied here, is defined to mean a survey of the literature. A survey article in IEEE Communications Surveys & Tutorials should provide a comprehensive review of developments in a selected area, covering its development from its inception to its current state and beyond, and illustrating its development through liberal citations from the literature. Both tutorials and surveys should be tutorial in nature and should be written in a style comprehensible to readers outside the specialty of the article.