RIS-Enabled Integrated Sensing and Communication for 6G Systems

TL;DR

This paper introduces a novel RIS-enabled integrated sensing and communication system for 6G, utilizing passive radars and a new localization algorithm to improve target detection and positioning in complex environments.

Contribution

The work presents a new architecture combining RISs and passive radars for integrated sensing and communication, along with a tailored localization algorithm for enhanced target detection.

Findings

Localization accuracy improves with larger RIS sizes

The system can detect multiple targets simultaneously

Simulation results validate the effectiveness of the proposed method

Abstract

The following paper proposes a new target localization system design using an architecture based on reconfigurable intelligent surfaces (RISs) and passive radars (PRs) for integrated sensing and communications systems. The preamble of the communication signal is exploited in order to perform target sensing tasks, which involve detection and localization. The RIS in this case can aid the PR in sensing targets that are otherwise not seen by the PR itself, due to the many obstacles encountered within the propagation channel. Therefore, this work proposes a localization algorithm tailored for the integrated sensing and communications RIS-aided architecture, which is capable of uniquely positioning targets within the scene. The algorithm is capable of detecting the number of targets along with estimating the position of targets via angles and times of arrival. Our simulation results demonstrate the performance of the localization method in terms of different localization and detection metrics and for increasing RIS sizes.