Design and Evaluation of Digital Baseband Converter Sub-channel Delay Compensation Method on Bandwidth Synthesis

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dc.contributor.authorJiang, Kun
dc.contributor.authorYan, Pingbo
dc.contributor.authorWang, Yuanqin
dc.contributor.authorJiao, Yiwen
dc.contributor.authorLian, Xin
dc.contributor.authorXu, Ke
dc.coverage.issue2cs
dc.coverage.volume24cs
dc.date.accessioned2015-06-29T13:23:48Z
dc.date.available2015-06-29T13:23:48Z
dc.date.issued2015-06cs
dc.description.abstractThe effect of sub-channel delay on bandwidth synthesis is investigated to eliminate the “phase step” phenomenon in bandwidth synthesis during the test of CDBE (Chinese Digital Backend). Through formula derivation, we realize that sub-channel delay may cause phase discontinuity between different sub-channels. Theoretical analysis shows that sub-channel delay can induce bandwidth synthesis error in group delay measurement of the linear system. Furthermore, in the differential delay measurement between two stations, bandwidth synthesis error may occur when the LO (Local Oscillator) frequency differences of corresponding sub-channels are not identical. Error-free conditions are discussed under different applications. The phase errors among different sub-channels can be removed manually. However, the most effective way is the compensation of sub-channel delay. A sub-channel delay calculation method based on Modelsim is proposed. The compensation method is detailed. Simulation and field experiments are presented to verify our approach.en
dc.formattextcs
dc.format.extent650-659cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2015 vol. 24, č. 2, s. 650-659. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2015.0650en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/41868
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2015/15_02_0650_0659.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectVLBIen
dc.subjectbandwidth synthesisen
dc.subjectdigital baseband converteren
dc.subjectphase stepen
dc.subjectdelay compensationen
dc.subjectsub-channel delayen
dc.titleDesign and Evaluation of Digital Baseband Converter Sub-channel Delay Compensation Method on Bandwidth Synthesisen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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