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Software-Defined Radio Experimental Validation of an OTFS-Based ISAC for Velocity Estimation in an ARoF Setup

2026-04-27Artigo científico Acesso aberto
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dc.contributor.authorTihomorskis, Nikolajs
dc.contributor.authorMigla, Sandis
dc.contributor.authorAghda, Omid Abbassi
dc.contributor.authorRubuls, Kristaps
dc.contributor.authorKrumins, Niks
dc.contributor.authorNovikova, Olesja
dc.contributor.authorBraunfelds, Janis
dc.contributor.authorSpolitis, Sandis
dc.contributor.authorOzolins, Oskars
dc.contributor.authorAboltins, Arturs
dc.contributor.institutionDEE - Departamento de Engenharia Electrotécnica e de Computadores
dc.contributor.pblMDPI - Multidisciplinary Digital Publishing Institute
dc.date.accessioned2026-07-17T09:52:02Z
dc.date.available2026-07-17T09:52:02Z
dc.date.issued2026-04-27
dc.descriptionPublisher Copyright: © 2026 by the authors.
dc.description.abstractOTFS, proposed for next-generation wireless communication systems such as 6G mobile networks, incorporates ISAC into DD-domain multiplexing, enabling simple detection of distance, velocity, and movement direction. This paper presents a SDR implementation of OTFS in an ARoF setup with wireless RF transmission. The main goal of this study is to validate and evaluate the implemented OTFS with static objects and to explore the quality of velocity and direction estimation in sensing scenarios involving moving objects. For the BER measurements, experiments were performed using a static object while varying the SDR transmitter power and introducing additional CFO. Experimental validation shows a minimum BER ≤ 5 × 10−7 with 0 errors per 2 × 106 bits. Data transmission at fractional Doppler yielded a BER ≈ 0.09, which is attributed to the use of a LMMSE channel estimator, that is not optimal for channels with fractional Doppler. Estimation of the velocity of a mobile object with an absolute velocity of (Formula presented.) m/s yielded a RMSE = 0.0839 m/s.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent17
dc.format.extent8599420
dc.identifier.doi10.3390/technologies14050262
dc.identifier.issn2227-7080
dc.identifier.otherPURE: 166405248
dc.identifier.otherPURE UUID: bd6aeb89-021a-4abf-8cef-137c0f012b27
dc.identifier.otherScopus: 105040058424
dc.identifier.otherWOS: 001774402000001
dc.identifier.urihttp://hdl.handle.net/10362/204612
dc.identifier.urlhttps://www.scopus.com/pages/publications/105040058424
dc.identifier.urlhttps://www.webofscience.com/wos/woscc/full-record/WOS:001774402000001
dc.language.isoeng
dc.peerreviewedyes
dc.subjectDelay-Doppler
dc.subjectISAC
dc.subjectMonostatic radar
dc.subjectOTFS
dc.subjectRadio-over-fiber
dc.subjectSoftware-defined radio
dc.subjectWireless communication
dc.subjectComputer Science (miscellaneous)
dc.titleSoftware-Defined Radio Experimental Validation of an OTFS-Based ISAC for Velocity Estimation in an ARoF Setupen
dc.typejournal article
degois.publication.firstPage1
degois.publication.issue5
degois.publication.lastPage17
degois.publication.titleTechnologies
degois.publication.volume14
dspace.entity.typePublication
rcaap.rightsopenAccess

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