摘 要
随着5G无线网络的快速发展，毫米波通信技术因其高频段和大带宽特性成为实现超高速数据传输的核心手段，为满足未来移动通信对容量和速率的需求提供了重要解决方案本研究以毫米波通信技术在5G无线网络中的应用为背景，深入探讨了其关键技术及性能优化方法旨在解决毫米波通信中路径损耗严重、穿透能力弱以及易受环境干扰等关键问题研究采用理论分析与仿真验证相结合的方法，重点对波束成形技术、多输入多输出(MIMO)系统设计以及自适应调制策略进行了系统性研究通过构建精确的信道模型并结合实际场景测试，提出了一种基于智能反射面(RIS)辅助的毫米波通信方案，有效提升了链路稳定性和覆盖范围研究结果表明，所提出的RIS辅助方案能够在复杂环境中显著降低信号衰减，并提高频谱效率此外，通过优化波束成形算法，实现了更高的能量利用率和更低的误码率本研究的主要贡献在于创新性地将RIS技术引入毫米波通信领域，为克服传统毫米波通信局限性提供了新思路，同时为5G及未来6G网络的设计与部署奠定了理论基础研究成果对推动毫米波通信技术的实际应用具有重要意义
关键词：毫米波通信；智能反射面(RIS)；波束成形；多输入多输出(MIMO)；自适应调制
Abstract
With the rapid development of 5G wireless networks, millimeter-wave communication technology has become a core means to achieve ultra-high-speed data transmission due to its high-frequency bands and large bandwidth characteristics, providing an important solution to meet the future mobile communication demands for capacity and rate. This study, based on the application of millimeter-wave communication technology in 5G wireless networks, delves into its key technologies and performance optimization methods, aiming to address critical issues such as severe path loss, weak penetration capability, and susceptibility to environmental interference in millimeter-wave communications. By combining theoretical analysis with simulation verification, the study systematically investigates beamforming technology, multiple-input multiple-output (MIMO) system design, and adaptive modulation strategies. Through the construction of accurate channel models and real-world scenario testing, an intelligent reflecting surface (RIS)-assisted millimeter-wave communication scheme is proposed, effectively enhancing link stability and coverage range. The research findings indicate that the proposed RIS-assisted scheme can significantly reduce signal attenuation and improve spectral efficiency in complex environments. Moreover, by optimizing the beamforming algorithm, higher energy utilization and lower bit error rates are achieved. The primary contribution of this study lies in innovatively introducing RIS technology into the millimeter-wave communication domain, offering new approaches to overcome traditional limitations of millimeter-wave communications, while laying a theoretical foundation for the design and deployment of 5G and future 6G networks. The research outcomes hold significant implications for advancing the practical application of millimeter-wave communication technology.
Keywords: Millimeter Wave Communication; Intelligent Reflecting Surface (Ris); Beamforming; Multiple Input Multiple Output (Mimo); Adaptive Modulation
目 录
1绪论 1
1.15G无线网络发展背景与意义 1
1.2毫米波通信技术的研究现状 1
1.3本文研究方法与技术路线 2
2毫米波通信基础理论分析 2
2.1毫米波频谱特性与优势 2
2.2毫米波传播模型与信道特性 3
2.3关键技术原理与实现机制 3
2.4毫米波通信系统架构设计 4
3毫米波通信在5G中的应用挑战 4
3.1信号衰减与路径损耗问题 4
3.2穿透损耗与覆盖范围限制 5
3.3天线设计与波束成形技术 5
3.4干扰管理与系统优化策略 6
4毫米波通信关键技术研究 7
4.1波束赋形算法研究与优化 7
4.2多天线技术在毫米波中的应用 7
4.3高效调制解调技术分析 8
4.4网络架构与协议设计改进 8
结论 9
参考文献 10
致 谢 11
