Optimization of RIS-Aided MIMO – A Mutually Coupled Loaded Wire Dipole Model - CentraleSupélec
Article Dans Une Revue IEEE Wireless Communications Letters Année : 2024

Optimization of RIS-Aided MIMO – A Mutually Coupled Loaded Wire Dipole Model

Résumé

We consider a reconfigurable intelligent surface (RIS) assisted multiple-input multiple-output (MIMO) system in the presence of scattering objects. The MIMO transmitter and receiver, the RIS, and the scattering objects are modeled as mutually coupled thin wires connected to load impedances. We introduce a novel numerical algorithm for optimizing the tunable loads connected to the RIS, which does not utilize the Neumann series approximation. The algorithm is provably convergent, has polynomial complexity with the number of RIS elements, and outperforms the most relevant benchmark algorithms while requiring fewer iterations and converging in a shorter time.
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Dates et versions

hal-04745522 , version 1 (20-10-2024)

Identifiants

Citer

H. El Hassani, X. Qian, S. Jeong, N. Perović, Marco Di Renzo, et al.. Optimization of RIS-Aided MIMO – A Mutually Coupled Loaded Wire Dipole Model. IEEE Wireless Communications Letters, 2024, 13 (3), pp.726 - 730. ⟨10.1109/LWC.2023.3341089⟩. ⟨hal-04745522⟩
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