{
  "abstract": "This letter investigates a non-uniform activation aided distributed generalized spatial modulation (DGSM) scheme in a downlink distributed multiple-input multiple-output (DMIMO) system formed by geographically separated transmission reception points (TRPs). Unlike conventional uniform-activation DGSM, the proposed scheme assigns adaptive activation probabilities to different TRP subsets, thereby jointly exploiting the data-domain transmission capability and the index-domain information carried by cooperative subset selection. We derive a mutual-information upper bound under non-uniform activation and formulate a joint activation-probability and power allocation problem subject to a long-term average power constraint. To solve this problem, we develop a semi-closed-form joint probability and power optimization (SC-JPPO) algorithm, where the optimal activation probabilities are shown to follow a Softmax function of the effective utilities. Simulation results demonstrate that the proposed scheme improves spectral efficiency under the same activation scale and power budget compared with existing benchmarks.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29915",
  "author_total": 6,
  "authors": [
    {
      "name": "Haojin Li"
    },
    {
      "name": "Chen Sun"
    },
    {
      "name": "Rang Su"
    },
    {
      "name": "Zhaojian Liu"
    },
    {
      "name": "Wenqi Zhang"
    },
    {
      "name": "Haijun Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8mn6hxnnnncet.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29915",
  "fulltext_url": null,
  "id": "8mn6hxnnnncet",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29915",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2609.29915",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8mn6hxnnnncet.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:15Z",
      "native_id": "2609.29915",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29915"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "Non-Uniform Activation Aided Distributed Generalized Spatial Modulation for DMIMO Systems",
  "title_text": "Non-Uniform Activation Aided Distributed Generalized Spatial Modulation for DMIMO Systems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:15Z",
  "url": "https://research.draconitic.com/paper/8mn6hxnnnncet",
  "venue": "arXiv",
  "versions": []
}