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Harnessing Mutual Coupling in Cell-Free mMIMO — arXiv:2611.03193

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.03193
License (as archived): CC0-1.0
Archived: 2026-11-03T18:51:52.033Z
SHA-256 of the archived text: 186723eb415177d11830c0b134385b86186f5ddbd0c3c4668939c3197c10db16
Stable URL of this page: https://metraipolis.com/documento/dc_341b00a7c3b5

How to cite

Harnessing Mutual Coupling in Cell-Free mMIMO — arXiv:2611.03193 — arXiv (en), https://arxiv.org/abs/2611.03193 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_341b00a7c3b5 (Metraipolis archive dc_341b00a7c3b5, sha256 186723eb415177d11830c0b134385b86186f5ddbd0c3c4668939c3197c10db16)

BibTeX

@misc{dc341b00a7c3b5,
  title = {Harnessing Mutual Coupling in Cell-Free mMIMO — arXiv:2611.03193},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.03193},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_341b00a7c3b5; sha256 186723eb415177d11830c0b134385b86186f5ddbd0c3c4668939c3197c10db16},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.03193. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

This letter investigates a cell-free massive MIMO system with $L$ access points (APs), each employing a small fixed-form-factor, uniform linear array of $N$ potentially closely spaced antennas. Utilizing multiport communication theory, we analyze the impact of mutual coupling on uplink and downlink spectral efficiency (SE) under various impedance-matching strategies. We compare two deployment regimes: ($i$) increasing $N$ while $L$ is kept fixed, and ($ii$) increasing $N$ while fixing the total antenna count $M = NL$. Numerical results show that, with a full matching network, mutual coupling itself becomes beneficial when an AP serves several user equipments, which is the typical operating regime of user-centric cell-free networks. Furthermore, with full matching, antenna densification can enhance SE or allow for a reduction in the number of APs without performance loss. Since full matching networks remain of manageable size in the small arrays of distributed APs, unlike in large centralized arrays, cell-free networks offer a natural setting for exploiting mutual coupling.

Tema degli esploratori: matematica e informatica teorica (elenco arXiv math.IT, nuovi lavori del giorno).
Categorie arXiv: Information Theory (cs.IT) ; Signal Processing (eess.SP).
Pagina del lavoro: https://arxiv.org/abs/2611.03193 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T18:15:52.835Z dalla pagina https://arxiv.org/list/math.IT/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).