Efficient integration of reconfigurable intelligent surfaces (RISs) into the current wireless network standard is not a trivial task due to the overhead generated by performing channel estimation (CE) and phase-shift optimization. In this paper, we propose a framework enabling the coexistence between orthogonal-frequency division multiplexing (OFDM) and RIS technologies. Instead of wasting communication symbols for the CE and optimization, the proposed framework exploits the localization information obtainable by RIS-aided communications to provide a robust allocation strategy for user multiplexing. The results demonstrate the effectiveness of the proposed approach with respect to CE-based transmission methods.
@article{arxiv.2303.12763,
title = {Localization-based OFDM framework for RIS-aided systems},
author = {Fabio Saggese and Kimmo Kansanen and Petar Popovski},
journal= {arXiv preprint arXiv:2303.12763},
year = {2026}
}
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