@inproceedings{5c4e255d7379433eaad64df2d0589e13,
title = "Reconfigurable Intelligent Surface Aided Full Duplex Networking Systems",
abstract = "In this paper, we propose a multi-cell full-duplex (FD) networking scheme by deploying a reconfigurable intelligent surface (RIS) at the cell boundary to configure the radio environment proactively. We aim to maximize the sum rate (SR) of multiple cells by jointly optimizing the transmit precoding (TPC) matrices at FD base stations (BSs) and the phase shift matrix at RIS. Since the original problem is non-convex, we reformulate and decouple it into a pair of subproblems by utilizing the relationship between SR and minimum mean square error. The optimal solutions of TPC matrices are obtained in closed form, while a successive convex approximation-based algorithm is developed to resolve the phase shift matrix suboptimally. Simulation results show that introducing an RIS into the FD networking system can improve the overall SR significantly. More importantly, we validate that the RIS deployment with optimized phase shifts can reduce the requirement for self-interference cancellation (SIC) and the number of BS antennas effectively, especially with enough reflecting elements. As a result, the utilization of RIS enables the originally cumbersome FD networking system to become efficient and practical.",
keywords = "Full-duplex (FD), reconfigurable intelligent surface (RIS), self-interference cancellation (SIC), sum rate (SR)",
author = "Yuncong Li and Yingyang Chen and Miaowen Wen and Duoying Zhang and Bingli Jiao and Zhiguo Ding and Tsiftsis, {Theodoros A.} and Poor, {H. Vincent}",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE International Conference on Communications, ICC 2023 ; Conference date: 28-05-2023 Through 01-06-2023",
year = "2023",
doi = "10.1109/ICC45041.2023.10278919",
language = "English (US)",
series = "IEEE International Conference on Communications",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "4273--4278",
editor = "Michele Zorzi and Meixia Tao and Walid Saad",
booktitle = "ICC 2023 - IEEE International Conference on Communications",
address = "United States",
}