Principles, Applications, and Challenges of Reconfigurable Intelligent Surface-Enabled Backscatter Communication: A Comprehensive Survey and Outlook

IF 34.4 1区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS IEEE Communications Surveys and Tutorials Pub Date : 2024-12-18 DOI:10.1109/COMST.2024.3519788

Shuai Han;Jinming Wang;Cheng Li;Ekram Hossain

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Abstract

Backscatter communication (BackCom) networks are expected to provide ultra-low-power transmission and massive connectivity in future wireless communication systems. Nevertheless, the double-fading effect significantly reduces signal intensity and is a primary problem of modern BackCom systems. Reconfigurable Intelligent Surface (RIS) can artificially modify the wireless environment through numerous controllable reflecting elements. With the help of RIS, the desired signals in the BackCom procedure can be captured and reflected in the specified direction, which is able to alleviate the double-fading problem. Specifically, RIS can be a backscatter device to send information instead of a collaborator to enhance transmission, yielding the RIS-BackCom mechanism. However, a comprehensive review of this technique still needs to be made available, dramatically limiting its development. This paper presents the fundamental principles and functions of legacy BackCom systems, the RIS technique, and RIS-BackCom networks. Then, we discuss the system-level performance with different modulation and channel estimation approaches. Further, we introduce symbiotic radio (SR) networks developed from the RIS-BackCom technique. After that, we provide a survey on diverse optimization issues existing in the applications of RIS-BackCom networks. Finally, we envision emerging use scenarios, potential challenges, and possible solutions in future wireless communication networks.

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可重构智能表面支持的反向散射通信的原理、应用和挑战：全面调查与展望

反向散射通信（BackCom）网络有望在未来的无线通信系统中提供超低功耗传输和大规模连接。然而，双重衰落效应显著降低了信号强度，是现代BackCom系统的主要问题。可重构智能表面（RIS）可以通过众多可控反射元素人为地改变无线环境。在RIS的帮助下，可以捕获BackCom过程中所需的信号并在指定方向上反射，从而可以缓解双衰落问题。具体来说，RIS可以作为反向散射设备来发送信息，而不是作为协作器来增强传输，从而产生RIS- backcom机制。然而，仍然需要对这项技术进行全面的审查，这极大地限制了它的发展。本文介绍了传统BackCom系统、RIS技术和RIS-BackCom网络的基本原理和功能。然后，我们讨论了不同调制和信道估计方法的系统级性能。此外，我们还介绍了从RIS-BackCom技术发展而来的共生无线电（SR）网络。然后，对RIS-BackCom网络应用中存在的各种优化问题进行了综述。最后，我们展望了未来无线通信网络中出现的使用场景、潜在挑战和可能的解决方案。

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.