论文标题
通过配备单个接收RF链的多个可重构智能表面进行本地化
Localization via Multiple Reconfigurable Intelligent Surfaces Equipped with Single Receive RF Chains
论文作者
论文摘要
可以利用可重新配置的智能表面（RISS）产生的额外自由度，可以利用高精度的本地化和跟踪来利用。在本文中，利用了最近的RIS硬件体系结构，该架构包含用于测量收集的单个接收射频（RF）链，我们提出了带有多个RISS的用户本地化方法。提出的方法包括在每个RIS处的方向估计的初始步骤，然后进行最大似然位置估计，该估计是用最小二乘线相交技术初始化的。我们的数值结果展示了提出的本地化的准确性，从而验证了我们的理论估计分析。
The extra degrees of freedom resulting from the consideration of Reconfigurable Intelligent Surfaces (RISs) for smart signal propagation can be exploited for high accuracy localization and tracking. In this paper, capitalizing on a recent RIS hardware architecture incorporating a single receive Radio Frequency (RF) chain for measurement collection, we present a user localization method with multiple RISs. The proposed method includes an initial step for direction estimation at each RIS, followed by maximum likelihood position estimation, which is initialized with a least squares line intersection technique. Our numerical results showcase the accuracy of the proposed localization, verifying our theoretical estimation analysis.
