Experimental Evaluation of Multi-operator RIS-assisted Links in Indoor Environment

TL;DR

This study experimentally evaluates the coexistence of multiple RIS-assisted communication links operated by different entities within the same indoor environment, demonstrating minimal mutual interference and maintained quality of service.

Contribution

It provides the first experimental analysis of multi-operator RIS-assisted links co-existing indoors, highlighting their potential for interference-free operation.

Findings

Two RIS-assisted links can operate simultaneously without significant interference.

BER and EVM metrics show maintained communication quality.

Different operators' links do not severely impact each other's performance.

Abstract

In this work, we present reconfigurable intelligent surface (RIS)-assisted optimization of the multiple links in the same indoor environment. Multiple RISs from different operators can co-exists and handle independent robust communication links in the same indoor environment. We investigated the key performance metrics with the help of two simultaneously operating RIS-empowered robust communication links at different center frequencies in the same indoor environment. We found with the help of bit error rate (BER) and error vector magnitude (EVM) measurements that two operators can co-exist in the same RF environment without seriously impacting quality of service of users.