2023/05/09 by Herman Lucas dos Santos, Santos, Herman L. dos, Cristian J. Vaca-Rubio +9
Engineering · #Advanced Wireless Communication Technologies #FOS: Electrical engineering #IoT Networks and Protocols #Satellite Communication Systems #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2305.05229
openalex publication_date 2023/05/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
This paper proposes a method for reducing third-party exposure to electromagnetic fields (EMF) by exploiting the capability of a reconfigurable intelligent surfaces' (RIS) to manipulate the electromagnetic environment. We consider users capable of multi-beam communication, such that a user can use a set of different propagation paths enabled by the RIS. The optimization objective is to find propagation alternatives that allow to maintain the target quality of service while minimizing the level of EMF at surrounding non-intended users (NUEs). We provide an evolutionary heuristic solution based on Genetic Algorithm (GA) for power equalization and multi-beam selection of a codebook at the Base Station. Our results show valuable insights into how RIS-assisted multi-beam communications can mitigate EMF exposure with minimal degradation of the spectral efficiency.