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dc.contributor.authorXu, Z. J.
dc.contributor.authorLu, W. D.
dc.contributor.authorGong, Y.
dc.contributor.authorHua, J. Y.
dc.contributor.authorJin, W. B.
dc.date.accessioned2020-10-14T07:07:55Z
dc.date.available2020-10-14T07:07:55Z
dc.date.issued2020-09cs
dc.identifier.citationRadioengineering. 2020 vol. 29, č. 3, s. 580-588. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/195220
dc.description.abstractA covert communication system is proposed in this study, in which a~ non-zero mean Gaussian sequence is used as a~ random carrier and its mean is modulated by a~ covert binary bit. The aperiodic transmitted signal exhibits the same statistical characteristics as the ambient noise to confuse an~ eavesdropper. The received signal is multiplied with the pseudo-random sequence synchronized with the transmitter to recover these positive and negative mean Gaussian sequence. The sample mean estimator and hard decision are used to determine the covert message, and accordingly, theoretical bit error rate in additive white Gaussian noise channel is also derived. Simulation results are very consistent with the theoretical derivation. The proposed system works in the physical layer with the advantages of simple structure, strong concealment, good BER performance and very suitable for low-cost, resource-limited and low-rate transmission devices.en
dc.formattextcs
dc.format.extent580-588cs
dc.format.mimetypeapplication/pdfen
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2020/20_03_0580_0588.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectNormal distributionen
dc.subjectKullback-Leibler divergenceen
dc.subjectcovert communicationen
dc.titleA Covert Communication System Using Non-Zero Mean Normal Distributionsen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
dc.coverage.issue3cs
dc.coverage.volume29cs
dc.identifier.doi10.13164/re.2020.0580en
dc.rights.accessopenAccessen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen


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Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International license