cellular architecture and key technologies for 5g wireless communication networks

《cellular architecture and key technologies for 5g wireless communication networks》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、.5GWIRELESSCOMMUNICATIONSYSTEMS:PROSPECTSANDHALLENGESCellularArchitectureandKeyTechnologiesfor5GWirelessCommunicationNetworksABSTRACTThefourthgenerationwirelesscommunicationsystemshavebeendeployedoraresoontobedeployedinmanycountries.However,withanexplosionofwirelessmobiledevicesandserv

2、ices,therearestillsomechallengesthatcannotbeaccommodatedevenby4G,suchasthespectrumcrisisandhighenergyconsumption.Wirelesssystemdesignershavebeenfacingthecontinuouslyincreasingdemandforhighdataratesandmobilityrequiredbynewwirelessapplicationsandthereforehavestartedresearchonfifthgenerat

3、ionwirelesssystemsthatareexpectedtobedeployedbeyond2020.Inthisarticle,weproposeapotentialcellulararchitecturethatseparatesindoorandoutdoorscenarios,anddiscussvariouspromisingtechnologiesfor5Gwirelesscommunicationsystems,suchasmassiveMIMO,energy-efficientcommunications,cognitiveradionet

4、works,andvisiblelightcommunications.Futurechallengesfacingthesepotentialtechnologiesarealsodiscussed.INTRODUCTIONTheinnovativeandeffectiveuseofinformationandcommunicationtechnologies(ICT)isbecomingincreasinglyimportanttoimprovetheeconomyoftheworld[1].Wirelesscommunicationnetworksareper

5、hapsthemostcriticalelementintheglobalICTstrategy,underpinningmanyotherindustries.Itisoneofthefastestgrowingandmostdynamicsectorsintheworld.TheEuropeanMobileObservatory(EMO)reportedthatthemobilecommunicationsectorhadtotalrevenueof€174billionin2010,therebybypassingtheaerospaceandpharmace

6、uticalsectors[2].Thedevelopmentofwirelesstechnologieshasgreatlyimprovedpeople’sabilitytocommunicateandliveinbothbusinessoperationsandsocialfunctions.Thephenomenalsuccessofwirelessmobilecommunicationsismirroredbyarapidpaceoftechnologyinnovation.Fromthesecondgeneration(2G)mobilecommunica

7、tionsystemdebutedin1991tothe3Gsystemfirstlaunchedin2001,thewirelessmobilenetworkhastransformedfromapuretelephonysystemtoanetworkthatcantransportrichmultimediacontents.The4GwirelesssystemsweredesignedtofulfilltherequirementsofInternationalMobileTelecommunications-Advanced(IMT-A)usingI