{"ID":23475894,"CreatedAt":"2026-09-18T01:09:05.407443952Z","UpdatedAt":"2026-09-20T18:11:56.143995915Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2609.19401","arxiv_id":"2609.19401","title":"Phase-Coherent Doppler-Only Sensing for D-MIMO ISAC","abstract":"This paper studies phase-coherent Doppler-only sensing for bandwidth-limited sub-6 GHz D-MIMO ISAC. We consider a multistatic system with one transmitter and multiple synchronized single-antenna receivers, and develop noncoherent and coherent maximum-likelihood estimators together with their position error bounds. The analysis shows that noncoherent sensing relies only on Doppler and cannot localize static targets, whereas phase-coherent processing exploits carrier phase to provide additional position information. Simulations confirm the bounds and show that coherent processing significantly improves localization accuracy in the considered narrowband setting.","short_abstract":"This paper studies phase-coherent Doppler-only sensing for bandwidth-limited sub-6 GHz D-MIMO ISAC. We consider a multistatic system with one transmitter and multiple synchronized single-antenna receivers, and develop noncoherent and coherent maximum-likelihood estimators together with their position error bounds. The...","url_abs":"https://arxiv.org/abs/2609.19401","url_pdf":"https://arxiv.org/pdf/2609.19401v1","authors":"[\"Silan Karadag\",\"Musa Furkan Keskin\",\"Navid Amani\",\"Nikita Lyamin\",\"Annelie Wyholt\",\"Henk Wymeersch\"]","published":"2026-09-16T20:35:13Z","proceeding":"eess.SP","tasks":"[\"eess.SP\"]","methods":"[]","has_code":false}