Performance of Cross-layer Design with Multiple Outdated Estimates in Multiuser MIMO System

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dc.contributor.authorYu, Xiangbin
dc.contributor.authorLiu, Yan
dc.contributor.authorLi, Yang
dc.contributor.authorZhu, Qiuming
dc.contributor.authorYin, Xin
dc.contributor.authorQln, Kecang
dc.coverage.issue3cs
dc.coverage.volume23cs
dc.date.accessioned2014-12-11T12:25:34Z
dc.date.available2014-12-11T12:25:34Z
dc.date.issued2014-09cs
dc.description.abstractBy combining adaptive modulation (AM) and automatic repeat request (ARQ) protocol as well as user scheduling, the cross-layer design scheme of multiuser MIMO system with imperfect feedback is presented, and multiple outdated estimates method is proposed to improve the system performance. Based on this method and imperfect feedback information, the closed-form expressions of spectral efficiency (SE) and packet error rate (PER) of the system subject to the target PER constraint are respectively derived. With these expressions, the system performance can be effectively evaluated. To mitigate the effect of delayed feedback, the variable thresholds (VTs) are also derived by means of the maximum a posteriori method, and these VTs include the conventional fixed thresholds (FTs) as special cases. Simulation results show that the theoretical SE and PER are in good agreement with the corresponding simulation. The proposed CLD scheme with multiple estimates can obtain higher SE than the existing CLD scheme with single estimate, especially for large delay. Moreover, the CLD scheme with VTs outperforms that with conventional FTs.en
dc.formattextcs
dc.format.extent863-871cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2014, vol. 23, č. 3, s. 863-871. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/36489
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2014/14_03_0863_0871.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectMultiuser MIMOen
dc.subjectcross-layer designen
dc.subjectimperfect feedbacken
dc.subjectmultiple estimatesen
dc.subjectvariable thresholdsen
dc.titlePerformance of Cross-layer Design with Multiple Outdated Estimates in Multiuser MIMO Systemen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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