面向新一代移动通信的智能超表面技术综述

doi:10.11959/j.issn.1000-0801.2022278

摘要/Abstract

摘要：

智能超表面（reconfigurable intelligent surface，RIS）技术是6G的潜在关键技术之一，具有低成本、低功耗和易部署等特点。通过智能地调控空间中的电磁波，RIS 可以辅助构建智能可控的无线电磁环境，从而为移动通信的发展提供一种新范式。首先，对 RIS 的基础原理、主要技术优势和应用场景进行了分析。其次，对RIS应用于通信传输中的信道估计、波束成形等关键技术进行了探讨，并给出了相关研究建议。最后，从硬件实现、算法设计和网络部署3个方面分析了目前RIS技术在实际应用中面临的主要挑战。

关键词: 智能超表面, 6G, 信道估计, 波束成形, 网络部署

Abstract:

Reconfigurable intelligent surface technology, which features low cost, low energy consumption and easy deployment, is the potential key technology of 6G.By intelligently regulating electromagnetic waves in space, RIS can assist in building an intelligent and controllable wireless electromagnetic environment, thus providing a new paradigm for the development of mobile communications.Firstly, the basic principle, main technology advantages and application scenarios were analyzed.Then, the key technologies such as channel estimation and beamforming in RIS aided communication transmission were discussed, and relevant research suggestions were given.Finally, the main challenges of RIS technology in practical application were analyzed from the aspects of hardware implementation, algorithm design and network deployment.

Key words: reconfigurable intelligent surface, 6G, channel estimation, beamforming, network deployment

中图分类号:

TN929.5

高子路, 孙韶辉, 李丽. 面向新一代移动通信的智能超表面技术综述[J]. 电信科学, 2022, 38(10): 20-35.

Zilu GAO, Shaohui SUN, Li LI. Overview of reconfigurable intelligent surface for new-generation mobile communication[J]. Telecommunications Science, 2022, 38(10): 20-35.

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器件名称	功耗/W
双向电压转换器	0.013 8
电平调节器	0.918
变容二极管	0.001 76