Chapter 14: RIS-Aided Localization

Learning Objectives

• State the RIS-aided localization signal model in the near-field regime
• Derive the Fisher Information Matrix $\mathbf{J}$ for position estimation
• Quantify how the CRB on position scales with $N$ and multi-RIS fusion
• Explain why the RIS is particularly valuable in near-field localization
• Design a practical multi-RIS fusion algorithm for 6G positioning