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dc.contributor.authorGhiaasi Hafezi, Golsa
dc.contributor.authorBlazek, Thomas
dc.contributor.authorAshury, Mehdi
dc.contributor.authorSantos, Rute
dc.contributor.authorMecklenbräuker, Christoph
dc.identifier.citationWireless Communications & Mobile Computing. 2018, 2018 1-12.nb_NO
dc.description.abstractThis paper proposes and discusses the architecture for a real-time vehicular channel emulator capable of reproducing the input/output behavior of nonstationary time-variant radio propagation channels in safety-relevant vehicular scenarios. The vehicular channel emulator architecture aims at a hardware implementation which requires minimal hardware complexity for emulating channels with the varying delay-Doppler characteristics of safety-relevant vehicular scenarios. The varying delay-Doppler characteristics require real-time updates to the multipath propagation model for each local stationarity region. The vehicular channel emulator is used for benchmarking the packet error performance of commercial off-the-shelf (COTS) vehicular IEEE 802.11p modems and a fully software-defined radio-based IEEE 802.11p modem stack. The packet error ratio (PER) estimated from temporal averaging over a single virtual drive and the packet error probability (PEP) estimated from ensemble averaging over repeated virtual drives are evaluated and compared for the same vehicular scenario. The proposed architecture is realized as a virtual instrument on National Instruments™ LabVIEW. The National Instrument universal software radio peripheral with reconfigurable input-output (USRP-Rio) 2953R is used as the software-defined radio platform for implementation; however, the results and considerations reported are of general purpose and can be applied to other platforms. Finally, we discuss the PER performance of the modem for two categories of vehicular channel models: a vehicular nonstationary channel model derived for urban single lane street crossing scenario of the DRIVEWAY’09 measurement campaign and the stationary ETSI models.nb_NO
dc.publisherHindawi Publishing Corporationnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleReal-Time Emulation of Nonstationary Channels in Safety-Relevant Vehicular Scenariosnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalWireless Communications & Mobile Computingnb_NO
dc.description.localcodeCopyright © 2018 Golsa Ghiaasi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.nb_NO
cristin.unitnameInstitutt for elektroniske systemer

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Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal