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

H. El Hassani; X. Qian; S. Jeong; N. S. Perović; M. Di Renzo; P. Mursia; V. Sciancalepore; X. Costa-Pérez

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

Information Theory 2023-09-19 v2 Signal Processing math.IT

Authors: H. El Hassani , X. Qian , S. Jeong , N. S. Perović , M. Di Renzo , P. Mursia , V. Sciancalepore , X. Costa-Pérez

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Abstract

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.

Keywords

reconfigurable intelligent surface beamforming mimo communication

Cite

@article{arxiv.2306.09480,
  title  = {Optimization of RIS-Aided MIMO -- A Mutually Coupled Loaded Wire Dipole Model},
  author = {H. El Hassani and X. Qian and S. Jeong and N. S. Perović and M. Di Renzo and P. Mursia and V. Sciancalepore and X. Costa-Pérez},
  journal= {arXiv preprint arXiv:2306.09480},
  year   = {2023}
}

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

Abstract

Keywords

Cite

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