摘 要
智能反射面（Reconfigurable Intelligent Surface, RIS）作为一种新兴技术，在无线通信领域展现出巨大潜力。随着5G及未来6G网络的发展，提升频谱效率、降低能耗成为关键挑战，RIS通过软件控制的被动元器件阵列，能够灵活调控电磁波传播特性，为解决上述问题提供了新思路。本文旨在探讨RIS在无线通信系统中的应用价值与实现机制，重点研究其对信道状态信息获取、传输性能优化以及多用户场景下的资源分配影响。基于理论分析与仿真验证，提出了一种融合深度学习算法的智能反射面配置方案，该方案能够在复杂环境下自适应调整反射系数矩阵，有效改善链路质量并提高系统吞吐量。实验结果表明，相较于传统MIMO系统，采用RIS辅助通信可显著增强覆盖范围，减少信号干扰，特别是在非视距传播条件下优势明显。此外，本研究还首次引入了环境感知功能，使RIS能够根据周围环境动态变化自动优化配置，进一步提升了系统的灵活性与鲁棒性。综上所述，智能反射面技术不仅为无线通信带来了新的维度，也为构建更加高效、智能的未来网络奠定了坚实基础。
关键词：智能反射面 无线通信系统 频谱效率
Abstract
Reconfigurable Intelligent Surface (RIS), as an emerging technology, demonstrates significant potential in the field of wireless communications. With the development of 5G and future 6G networks, enhancing spectral efficiency and reducing energy consumption have become critical challenges. RIS, through its software-controlled passive element arrays, can flexibly modulate the propagation characteristics of electromagnetic waves, offering novel solutions to these issues. This paper aims to investigate the application value and implementation mechanisms of RIS in wireless communication systems, focusing on its impact on channel state information acquisition, transmission performance optimization, and resource allocation in multi-user scenarios. Based on theoretical analysis and simulation validation, a configuration scheme for RIS integrated with deep learning algorithms is proposed. This scheme can adaptively adjust the reflection coefficient matrix in complex environments, effectively improving link quality and system throughput. Experimental results show that compared to traditional MIMO systems, RIS-assisted communication significantly enhances coverage range and reduces signal interference, particularly under non-line-of-sight propagation conditions. Moreover, this study introduces environmental awareness functionality for the first time, enabling RIS to automatically optimize configurations according to dynamic changes in the surrounding environment, thereby further enhancing system flexibility and robustness. In conclusion, RIS technology not only brings a new dimension to wireless communications but also lays a solid foundation for building more efficient and intelligent future networks.
Keyword:Intelligent Reflecting Surface Wireless Communication System Spectrum Efficiency
目 录
1绪论 1
1.1智能反射面应用背景与意义 1
1.2国内外研究现状综述 1
1.3本文研究方法概述 2
2智能反射面技术原理 2
2.1智能反射面基本概念 2
2.2关键技术分析 3
2.3工作机制解析 3
3智能反射面对无线通信性能的影响 4
3.1信道容量提升机制 4
3.2干扰抑制效果分析 5
3.3网络覆盖范围优化 5
4智能反射面在实际场景中的应用 6
4.1室内通信环境应用 6
4.2物联网场景部署 7
4.3智慧城市中的应用 7
结论 8
参考文献 9
致谢 10
