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Positioning and Radiation Efficiency Degrees of Freedom in Cascaded Pinching-Antenna Arrays — arXiv:2611.03965

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.03965
License (as archived): CC0-1.0
Archived: 2026-11-04T19:14:16.288Z
SHA-256 of the archived text: d875547aef9e5ac190fd6693f32b8010ea8768f7c17d955340b0f1d6257a6166
Stable URL of this page: https://metraipolis.com/documento/dc_53fdff4ef98e

How to cite

Positioning and Radiation Efficiency Degrees of Freedom in Cascaded Pinching-Antenna Arrays — arXiv:2611.03965 — arXiv (en), https://arxiv.org/abs/2611.03965 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_53fdff4ef98e (Metraipolis archive dc_53fdff4ef98e, sha256 d875547aef9e5ac190fd6693f32b8010ea8768f7c17d955340b0f1d6257a6166)

BibTeX

@misc{dc53fdff4ef98e,
  title = {Positioning and Radiation Efficiency Degrees of Freedom in Cascaded Pinching-Antenna Arrays — arXiv:2611.03965},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.03965},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_53fdff4ef98e; sha256 d875547aef9e5ac190fd6693f32b8010ea8768f7c17d955340b0f1d6257a6166},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.03965. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

In a pinching-antenna system (PASS), a single source feeds multiple pinches, resulting in a cascade that couples their radiated powers. A shared radiated-power limit, such as the interference power constraint in an underlay cognitive radio network, couples them again. We study such a network where PASS serves the secondary users. First, we formulate the joint optimization problem of the two degrees of freedom (DoF), pinch positions and radiation efficiencies, and characterize the single-link optimum analytically. Then, rather than proposing one method, we present the results for a grid of schemes whose two axes are the two DoF. Under an order-free attribution, positioning is worth 1.34 times radiation efficiency, and the two are near-perfect substitutes. We also show that substitutability is due to the constraint and not the cascade, since relaxing the constraint by 20 dB removes 97% of their interaction. At the joint reference, not knowing the primary receiver (PR) location costs 6.23 bit/s/Hz, more than twice the 2.87 that optimizing both DoF is worth. Instantaneous fading information adds a further 0.29 bit/s/Hz. Allocating efficiencies at equally spaced positions reaches 98% of the joint reference at about three orders of magnitude less computation.

Tema degli esploratori: statistica e scienza dei dati (elenco arXiv eess.SP, nuovi lavori del giorno).
Categorie arXiv: Signal Processing (eess.SP).
Pagina del lavoro: https://arxiv.org/abs/2611.03965 — 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 2026-11-04T18:48:39.249Z dalla pagina https://arxiv.org/list/eess.SP/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).