Spatial Path Index Modulation in mmWave/THz Band Integrated Sensing and Communications

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dc.authoridElbir, Ahmet M./0000-0003-4060-3781
dc.authoridAbdallah, Asmaa/0000-0003-3387-9333
dc.authoridEltawil, Ahmed/0000-0003-1849-083X;
dc.contributor.authorElbir, Ahmet M.
dc.contributor.authorMishra, Kumar Vijay
dc.contributor.authorAbdallah, Asmaa
dc.contributor.authorCelik, Abdulkadir
dc.contributor.authorEltawil, Ahmed M.
dc.date.accessioned2025-10-11T20:48:14Z
dc.date.available2025-10-11T20:48:14Z
dc.date.issued2024
dc.departmentDüzce Üniversitesien_US
dc.description.abstractAs the demand for wireless connectivity continues to soar, the fifth generation and beyond wireless networks are exploring new ways to efficiently utilize the wireless spectrum and reduce hardware costs. One such approach is the integration of sensing and communications (ISAC) paradigms to jointly access the spectrum. Recent ISAC studies have focused on upper millimeter-wave and low terahertz bands to exploit ultrawide bandwidths. At these frequencies, hybrid beamformers that employ fewer radio-frequency chains are employed to offset expensive hardware but at the cost of lower multiplexing gains. Wideband hybrid beamforming also suffers from the beam-split effect arising from the subcarrier-independent (SI) analog beamformers. To overcome these limitations, we introduce a spatial path index modulation (SPIM) ISAC architecture, which transmits additional information bits via modulating the spatial paths between the base station and communications users. We design the SPIM-ISAC beamformers by estimating both radar and communications parameters through our proposed beam-split-aware algorithms. We then develop a family of hybrid beamforming techniques-hybrid, SI, subcarrier-dependent analog-only, and beam-split-aware beamformers-for SPIM-ISAC. Numerical experiments demonstrate that the proposed approach exhibits significantly improved spectral efficiency performance in the presence of beam-split when compared with even fully digital non-SPIM beamformers.en_US
dc.identifier.doi10.1109/TWC.2024.3375899
dc.identifier.endpage10802en_US
dc.identifier.issn1536-1276
dc.identifier.issn1558-2248
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-85188896749en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage10788en_US
dc.identifier.urihttps://doi.org/10.1109/TWC.2024.3375899
dc.identifier.urihttps://hdl.handle.net/20.500.12684/21818
dc.identifier.volume23en_US
dc.identifier.wosWOS:001312963400107en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIeee-Inst Electrical Electronics Engineers Incen_US
dc.relation.ispartofIeee Transactions on Wireless Communicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKA_WOS_20250911
dc.subjectMillimeter wave communicationen_US
dc.subjectHardwareen_US
dc.subjectSensorsen_US
dc.subjectRadaren_US
dc.subjectWireless communicationen_US
dc.subjectArray signal processingen_US
dc.subjectWidebanden_US
dc.subjectIntegrated sensing and communicationsen_US
dc.subjectmassive MIMOen_US
dc.subjectmillimeter-waveen_US
dc.subjectspatial modulationen_US
dc.subjectterahertzen_US
dc.titleSpatial Path Index Modulation in mmWave/THz Band Integrated Sensing and Communicationsen_US
dc.typeArticleen_US

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