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可重新配置的智能表面辅助D2D系统的定位性能分析和算法设计

Mengke Wang¹, Tiejun Lv¹, Pingmu Huang²

¹School of Information and Communication Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China.

Sensors (Basel, Switzerland)

|June 19, 2024

概括

本研究介绍了一种使用可重新配置智能表面 (RIS) 的合作定位系统,用于在毫米波 (mmWave) 频段中高精度定位. 该系统在降低传输功率的情况下达到厘米级准确度,克服阻塞挑战.

科学领域:

无线通信无线通信
局部化系统局部化系统
信号处理信号处理

背景情况:

在毫米波 (mmWave) 频段中高精度定位至关重要,但受到信号阻塞的挑战.
现有的本地化方法在复杂环境中难以获得可靠性.
设备对设备 (D2D) 通信为增强本地化提供了潜力.

研究的目的:

为用户设备 (UE) 提出一个新的合作本地化系统,其辅助是可重新配置的智能表面 (RIS).
为了应对在本地化任务中毫米波信号阻塞所带来的挑战.
为了优化系统的厘米级定位精度和能源效率.

主要方法:

开发一个合作本地化模型,将RIS集成为点和UE.
导出定位误差限制 (PEB) 作为一个关键性能指标.
设计UE-RIS通信的联合光束形成策略,以优化通道状态信息 (CSI) 并最大限度地减少PEB.

主要成果:

拟议的RIS辅助合作本地化系统可以达到厘米级的精度.
与RIS辅助的基站定位相比,该系统表现出卓越的性能.
在保持高精度的同时,实现了10dBm的传输功率减少.

结论:

拟议的UE-RIS合作本地化系统有效地克服了毫米波阻塞问题.
联合束形设计显著提高了定位精度和效率.
这种方法为未来高精度,全场景本地化提供了一个有希望的解决方案.

关键词:

梁成形设计的设计设备对设备 (D2D) 的关系毫米波是一种毫米波.定位错误局限定位错误局限可重新配置的智能表面.

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