{"ID":2825787,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2512.20246","arxiv_id":"2512.20246","title":"Sum-Rate Maximization for Uplink Segmented Waveguide-Enabled Pinching-Antenna Systems","abstract":"A multiuser uplink transmission framework based on the segmented waveguide-enabled pinching-antenna system (SWAN) is proposed under two operating protocols: segment selection (SS) and segment aggregation (SA). For each protocol, the achievable uplink sum-rate is characterized for both time-division multiple access (TDMA) and non-orthogonal multiple access (NOMA). Low-complexity placement methods for the pinching antennas (PAs) are developed for both protocols and for both multiple-access schemes. Numerical results validate the effectiveness of the proposed methods and show that SWAN achieves higher sum-rate performance than conventional pinching-antenna systems, while SA provides additional performance gains over SS.","short_abstract":"A multiuser uplink transmission framework based on the segmented waveguide-enabled pinching-antenna system (SWAN) is proposed under two operating protocols: segment selection (SS) and segment aggregation (SA). For each protocol, the achievable uplink sum-rate is characterized for both time-division multiple access (TDM...","url_abs":"https://arxiv.org/abs/2512.20246","url_pdf":"https://arxiv.org/pdf/2512.20246v1","authors":"[\"Songnan Gu\",\"Hao Jiang\",\"Chongjun Ouyang\",\"Yuanwei Liu\",\"Dong In Kim\"]","published":"2025-12-23T10:58:10Z","proceeding":"eess.SP","tasks":"[\"eess.SP\"]","methods":"[]","has_code":false}