On the Ergodic Capacity for SIM-Aided Holographic MIMO Communications

Anastasios Papazafeiropoulos; Ioannis Bartsiokas; Dimitra I. Kaklamani; Iakovos S. Venieris

On the Ergodic Capacity for SIM-Aided Holographic MIMO Communications

Information Theory 2025-12-29 v1 math.IT

Authors: Anastasios Papazafeiropoulos , Ioannis Bartsiokas , Dimitra I. Kaklamani , Iakovos S. Venieris

Abstract

We derive a novel closed-form lower bound on the ergodic capacity of holographic multiple-input multiple-output (HMIMO) systems enhanced by stacked intelligent metasurfaces (SIMs) under Rayleigh fading conditions. The proposed expression is valid for systems with a finite number of antennas and SIM elements and exhibits tightness throughout the whole signal-to-noise ratio (SNR) range. Furthermore, we conduct a comprehensive low-SNR analysis, offering meaningful observations on how key system parameters influence the capacity performance.

Keywords

mimo communication fading channels

Cite

@article{arxiv.2512.22068,
  title  = {On the Ergodic Capacity for SIM-Aided Holographic MIMO Communications},
  author = {Anastasios Papazafeiropoulos and Ioannis Bartsiokas and Dimitra I. Kaklamani and Iakovos S. Venieris},
  journal= {arXiv preprint arXiv:2512.22068},
  year   = {2025}
}

Comments

accepted in IEEE WCL

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