Localization via Multiple Reconfigurable Intelligent Surfaces Equipped with Single Receive RF Chains
Artikel i vetenskaplig tidskrift, 2022

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.

Direction estimation


maximum likelihood

position error bound

reconfigurable intelligent surfaces


G. C. Alexandropoulos

University of Athens

Ioanna Vinieratou

University of Athens

Henk Wymeersch

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk, Kommunikationssystem

IEEE Wireless Communications Letters

2162-2337 (ISSN)

Vol. In Press




Datorseende och robotik (autonoma system)



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