{
  "abstract": "This paper presents a unified downlink architec- ture for serving indoor and outdoor users from a shared multi-antenna rooftop base station (BS). To overcome severe building-penetration loss, the BS transfers information and radio- frequency (RF) energy to an indoor access point (AP) using simultaneous wireless information and power transfer (SWIPT). The AP harvests this energy and performs amplify-and-forward (AF) relaying, enabling self-sustained indoor communication. A movable waveguide-mounted pinching antenna (PA) further improves indoor coverage by adapting its position to the prop- agation environment. For outdoor transmission, zero-forcing (ZF) beamforming suppresses inter-group interference, while power-domain non-orthogonal multiple access (NOMA) supports multiple users within each group. We maximize the outdoor weighted sum rate (WSR) while satisfying stringent indoor and outdoor quality-of-service (QoS) requirements. The resulting nonconvex problem jointly optimizes the BS power fraction, SWIPT power-splitting ratio, PA position, and NOMA power allocation. To obtain an efficient solution, we develop a two-stage method based on alternating optimization (AO) and sequential quadratic programming (SQP). Numerical results show that the proposed architecture improves outdoor spectral efficiency while maintaining reliable, energy-sustainable indoor coverage. Increasing the BS array size further raises the indoor QoS- satisfaction probability toward unity, even under demanding rate targets.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.33367",
  "author_total": 4,
  "authors": [
    {
      "name": "Amit Agarwal"
    },
    {
      "name": "Susmita Sain"
    },
    {
      "name": "Keshav Singh"
    },
    {
      "name": "Sudip Biswas"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cc1ze65k1ggxb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.33367",
  "fulltext_url": null,
  "id": "cc1ze65k1ggxb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.33367",
  "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",
      "math.IT"
    ],
    [
      "openalex",
      "2208|Wireless Communication Security Techniques"
    ]
  ],
  "openalex": "W7223973389",
  "pdf_url": "https://arxiv.org/pdf/2610.33367",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cc1ze65k1ggxb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:53Z",
      "native_id": "2610.33367",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.33367"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "Pinching Antenna and Relay Assisted Joint Indoor Outdoor NOMA Communications with SWIPT",
  "title_text": "Pinching Antenna and Relay Assisted Joint Indoor Outdoor NOMA Communications with SWIPT",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:53Z",
  "url": "https://research.draconitic.com/paper/cc1ze65k1ggxb",
  "venue": "arXiv",
  "versions": []
}