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dc.contributor.authorNguyen, Tan N.
dc.contributor.authorDuy, Tran Trung
dc.contributor.authorLuu, Gia-Thien
dc.contributor.authorTran, Phuong T.
dc.contributor.authorVozňák, Miroslav
dc.date.accessioned2017-05-22T13:07:49Z
dc.date.available2017-05-22T13:07:49Z
dc.date.issued2017
dc.identifier.citationRadioengineering. 2017, vol. 26, issue 1, p. 240-250.cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/10084/117076
dc.description.abstractIn this paper, we propose an energy harvesting (EH)-based spectrum access model in cognitive radio (CR) network. In the proposed scheme, one of available secondary transmitters (STs) helps a primary transmitter (PT) forward primary signals to a primary receiver (PR). Via the cooperation, the selected ST finds opportunities to access licensed bands to transmit secondary signals to its intended secondary receiver (SR). Secondary users are assumed to be mobile, hence, optimization of energy consumption for these users is interested. The EH STs have to harvest energy from the PT's radio-frequency (RF) signals to serve the PTPR communication as well as to transmit their signals. The proposed scheme employs incremental relaying technique in which the PR only requires the assistance from the STs when the transmission between PT and PR is not successful. Moreover, we also investigate impact of hardware impairments on performance of the primary and secondary networks. For performance evaluation, we derive exact and lower-bound expressions of outage probability (OP) over Rayleigh fading channel. Monte-Carlo simulations are performed to verify the theoretical results. The results present that the outage performance of both networks can be enhanced by increasing the number of the ST-SR pairs. In addition, the outage performance of both primary and secondary networks is severely degraded with the increasing of hardware impairment level. It is also shown that fraction of time used for EH and positions of the secondary users significantly impact on the system performance.cs
dc.format.extent493817 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofseriesRadioengineeringcs
dc.relation.urihttp://dx.doi.org/10.13164/re.2017.0240cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectcognitive radiocs
dc.subjectrelay selectioncs
dc.subjectenergy harvestingcs
dc.subjecthardware impairmentscs
dc.subjectoutage probabilitycs
dc.titleEnergy harvesting-based spectrum access with incremental cooperation, relay selection and hardware noisescs
dc.typearticlecs
dc.identifier.doi10.13164/re.2017.0240
dc.rights.accessopenAccess
dc.type.versionpublishedVersioncs
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume26cs
dc.description.issue1cs
dc.description.lastpage250cs
dc.description.firstpage240cs
dc.identifier.wos000399735900031


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