bandwidth-efficientcooperativemimorelayingschemes

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1、-Bandwidth-efficientcooperativeMIMOrelayingschemes  OriginalResearchArticleComputers&ElectricalEngineeringCodedcooperativeMIMOrelayingschemesinwhichallsuccessfullydecodedsignalsfrommultiplesourcesaresimultaneouslyforwardedbyamulti-antennarelaytoacommonmulti-antennadestinationtoincrea

2、sebandwidthefficiencyareproposedinthispaper.Theseschemesfacilitatethevariousretransmissionstrategiesatrelayandsingle-userandmulti-useriterativedecodingtechniquesatdestination,suitablefortrade-offsbetweenperformance,latency,andcomplexity.Whenchannelstateinformation(CSI)isavailable,pre

3、-codingandpowerallocationattherelaycanbeexploitedtoenhancetheinformationtransmissionreliabilityovertherelay-destinationchannel,thusimprovingtheoverallsystemperformance.Simulationresultshowstheirsuperioritytodirecttransmissionunderthesametransmitpowerandbandwidthefficiency.ArticleOutl

4、ine1.Introduction2.CooperativeMIMOrelayingschemes2.1.Signaldetectionandretransmissionatrelay2.2.Signaldetectionatdestination3.Illustrativeresults4.ConclusionReferencesStaticanddynamicperformanceevaluationofacommercially-availableultrawidebandtrackingsystem  OriginalResearchArticleAut

5、omationinConstructionGraphicalAbstractLocatingandtrackingresources(e.g.,people,equipment,andmaterials)iscriticalinmanyindustrialapplicationsformonitoringproductivityandsafety.Inconstruction,varioustechnologies(e.g.,globalpositioningsystems(GPS),radiofrequencyidentification(RFID)andra

6、diofrequency(RF)localization)havebeenproposed.However,theirperformanceisnotwellunderstoodforthisparticularapplication.Thispaperpresentsastudyforevaluatingthestaticanddynamicperformanceofa.---commercially-availableultrawideband(UWB)trackingsysteminfreespaceandunderrealisticconstructio

7、nenvironments.Inaddition,astaticperformancemodelforestimatingpositionerrorasafunctionofreceiverpositionandinitialcalibrationerrorwasalsodeveloped.ResultsandexperiencesareinparticularusefulforresearchersorpractitionersinneedforadaptingUWBtechnologyfortheirapplication.ResearchHighlight

8、s►Real-timel