{
  "abstract": "We propose a novel receiver architecture that preserves the performance benefits of multiport selection in fluid-antenna systems while requiring only a very small number of radio-frequency (RF) chains. The resulting fluid-antenna hybrid multiport (FAHM) receiver effectively decouples port selection from signal combining by integrating a low-complexity analog combining network similar to those used in conventional hybrid multiantenna designs. We develop an effective-port criterion to determine the selected-port dimension before hybrid combining, thereby limiting the performance loss associated with port selection, and then design the hybrid combiner for a given RF-chain budget. The FAHM architecture is evaluated in a multiuser set-up operating under slow fluid-antenna multiple access (FAMA). In this scenario, a FAHM implementation with only 2 RF chains showcases a performance comparable to a fully-digital conventional multiport scheme with a much larger number of RF chains. Additionally, the proposed Rank-1 implementation attains a reduction in average GEPort execution time by about two orders of magnitude.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.06958",
  "author_total": 3,
  "authors": [
    {
      "name": "José P. González-Coma"
    },
    {
      "name": "José David Vega-Sánchez"
    },
    {
      "name": "F. Javier López-Martínez"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/96ffwynaq7n2r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.06958",
  "fulltext_url": null,
  "id": "96ffwynaq7n2r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.06958",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.IT"
    ],
    [
      "arxiv",
      "eess.SP"
    ],
    [
      "arxiv",
      "math.IT"
    ],
    [
      "openalex",
      "2202|Antenna Design and Analysis"
    ]
  ],
  "openalex": "W7160836440",
  "pdf_url": "https://arxiv.org/pdf/2605.06958",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/96ffwynaq7n2r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:38Z",
      "native_id": "2605.06958",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.06958"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "Hybrid Multiport Receivers for Slow Fluid Antenna Multiple Access",
  "title_text": "Hybrid Multiport Receivers for Slow Fluid Antenna Multiple Access",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:38Z",
  "url": "https://research.draconitic.com/paper/96ffwynaq7n2r",
  "venue": "arXiv",
  "versions": []
}