arxiveess.SP2026-07-24
PHY Authentication for Ambient IoTs in Near-Field XL-MIMO Backscatter Communication Systems
Fikiri Salum Uledi, Hafsa Ahmad, Muhammad Bilal Janjua, Cagri Ozgenc Etemoglu, Huseyin Arslan
This letter exploits near-field (NF) spherical wavefronts to derive geometry-dependent physical signatures for backscatter device (BD) authentication in extremely large-scale multiple-input multiple-output (XL-MIMO) backscatter communication systems. We propose a binary element-w…