论文标题
可重新配置的智能表面辅助网络：阶段对齐类别
Reconfigurable Intelligent Surface-assisted Networks: Phase Alignment Categories
论文作者
论文摘要
可重新配置的智能表面（RIS）是为下一代智能无线电环境做出贡献的有前途的技术之一。应用程序方案包括大量连接支持，信号增强和安全保护。分析RIS辅助网络的一个至关重要的困难是，通道性能对用户接收方向的变化敏感。本文通过将RIS照明空间分为四类来解决问题：完美的对准，连贯的对准，随机对准和破坏性的对齐方式。这四个类别涵盖了用户可以在$ 2 $ 2 $ pi的RIS缩小空间中体验的所有可能的相位对齐条件。我们对每个类别进行分析，从而为中断概率和多样性顺序得出分析表达式。提出了仿真结果以确认所提出的分析结果的有效性。
The reconfigurable intelligent surface (RIS) is one of the promising technology contributing to the next generation smart radio environment. The application scenarios include massive connectivity support, signal enhancement, and security protection. One crucial difficulty of analyzing the RIS-assisted networks is that the channel performance is sensitive to the change of user receiving direction. This paper tackles the problem by categorizing the RIS illuminated space into four categories: perfect alignment, coherent alignment, random alignment, and destructive alignment. These four categories cover all the possible phase alignment conditions that a user could experience within the overall $2$ pi solid angle of RIS-illuminated space. We perform analysis for each of these categories, deriving analytical expressions for the outage probability and diversity order. Simulation results are presented to confirm the effectiveness of the proposed analytical results.
