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dc.contributor.authorPapazafeiropoulos, Anastasios
dc.contributor.authorRatnarajah, Tharmalingam
dc.date.accessioned2020-04-20T11:12:57Z
dc.date.available2020-04-20T11:12:57Z
dc.date.issued2017-10-01
dc.identifier.citationPapazafeiropoulos , A & Ratnarajah , T 2017 , ' Toward a Realistic Assessment of Multiple Antenna HCNs: Residual Additive Transceiver Hardware Impairments and Channel Aging ' , IEEE Transactions on Vehicular Technology , vol. 66 , no. 10 , 7936500 , pp. 9061-9073 . https://doi.org/10.1109/TVT.2017.2710188
dc.identifier.issn0018-9545
dc.identifier.otherPURE: 13265072
dc.identifier.otherPURE UUID: dade2beb-9a96-4bd8-a325-ada9d946c18a
dc.identifier.otherScopus: 85035798283
dc.identifier.otherORCID: /0000-0003-1841-6461/work/72783392
dc.identifier.urihttp://hdl.handle.net/2299/22609
dc.description© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
dc.description.abstractGiven the critical dependence of broadcast channels by the accuracy of channel state information at the transmitter (CSIT), we develop a general downlink model with zero-forcing precoding, applied in realistic heterogeneous cellular systems with multiple-Antenna base stations (BSS). Specifically, we take into consideration imperfect CSIT due to pilot contamination, channel aging due to users relative movement, and unavoidable residual additive transceiver hardware impairments (RATHIs). Assuming that the BSS are Poisson distributed, the main contributions focus on the derivations of the upper bound of the coverage probability and the achievable user rate for this general model. We show that both the coverage probability and the user rate are dependent on the imperfect CSIT and RATHIs. More concretely, we quantify the resultant performance loss of the network due to these effects. We depict that the uplink RATHIs have equal impact, but the downlink transmit BS distortion has a greater impact than the receive hardware impairment of the user. Thus, the transmit BS hardware should be of better quality than user's receive hardware. Furthermore, we characterise both the coverage probability and user rate in terms of the time variation of the channel. It is shown that both of them decrease with increasing user mobility, but after a specific value of the normalized Doppler shift, they increase again. Actually, the time variation, following the Jakes autocorrelation function, mirrors this effect on coverage probability and user rate. Finally, we consider space-division multiple access (SDMA), single-user beamforming (SU-BF), and baseline single-input single-output transmission. A comparison among these schemes reveals that the coverage by means of SU-BF outperforms SDMA in terms of coverage.en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofIEEE Transactions on Vehicular Technology
dc.rightsOpen
dc.subjectAdditive hardware impairments
dc.subjectchannel aging
dc.subjectchannel estimation
dc.subjectcoverage probability
dc.subjectmultiple antenna heterogeneous cellular networks
dc.subjectAutomotive Engineering
dc.subjectAerospace Engineering
dc.subjectApplied Mathematics
dc.subjectElectrical and Electronic Engineering
dc.titleToward a Realistic Assessment of Multiple Antenna HCNs: Residual Additive Transceiver Hardware Impairments and Channel Agingen
dc.contributor.institutionCommunications and Intelligent Systems
dc.contributor.institutionCentre for Engineering Research
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Engineering and Technology
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85035798283&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Engineering & Computer Science
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2017-10-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1109/TVT.2017.2710188
rioxxterms.licenseref.uriUnspecified
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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