Two Methods for Estimation of Amplifier Imbalances in Multi-Amplifier Transmission Structures

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dc.contributor.authorMontezuma, Paulo
dc.contributor.authorDinis, Rui
dc.contributor.authorRibeiro, Sara
dc.contributor.authorBeko, Marko
dc.coverage.issue1cs
dc.coverage.volume26cs
dc.date.accessioned2017-04-18T08:21:45Z
dc.date.available2017-04-18T08:21:45Z
dc.date.issued2017-04cs
dc.description.abstractEnergy efficient power amplification of multilevel constellations can be achieved by an amplification structure based on the constellation's as a sum of polar components, such as $M$ BPSK (Bi-Phase Shift Keying), that are separately amplified. By doing this one can define highly efficient transmitters based on multiple amplifiers. However, amplifiers' imbalances might lead to substantial constellation distortion since phase and gain imbalances cause rotations and translations of the symbols associated to each branch that are combined to generate the resulting constellation. Therefore, it becomes crucial the knowledge of the amplifiers' imbalances to overcome this problem at the receiver side. For that we propose and evaluate efficient two new methods for estimating amplifier imbalances. Simulation results demonstrate that the good performance attainable by the proposed estimate algorithms can be assured without significant increase in system and computational complexity.en
dc.formattextcs
dc.format.extent285-290cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 1, s. 285-290. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.0285en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/64735
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2017/17_01_0285_0290.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectMultilevel constellationsen
dc.subjectmulti-amplifier transmittersen
dc.subjectestimationen
dc.titleTwo Methods for Estimation of Amplifier Imbalances in Multi-Amplifier Transmission Structuresen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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