Design and Practical Validation of a Novel Modulation Scheme for RIS Detection and Identification

TL;DR

This paper introduces a new modulation scheme for RIS detection that improves reliability by leveraging passive beamforming and is validated through simulations and experiments.

Contribution

A novel RIS modulation scheme that enhances detection reliability and reduces errors, validated with simulations and prototype experiments.

Findings

Reduces miss detection probability

Decreases false-alarm probability

Effective in both simulations and real-world tests

Abstract

The reconfigurable intelligent surfaces detection and identification (RISs-ID) is a critical process that enables a base station (BS) to adaptively assign the appropriate RIS to a given user equipment (UE). This work proposes a novel modulation scheme to enhance the reliability of RIS-ID by reducing the miss detection and false-alarm probabilities. Specifically, we leverage the RIS's passive beamforming gain to enable over-the-air modulation of the RIS ID, combined with passive beam sweeping to extend detection coverage in angular space. The proposed modulation scheme is validated through computer simulations and prototype experiments, demonstrating its effectiveness in reducing miss-detection and false-alarm probabilities.