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1、INVITEDPAPEREHFforSatelliteCommunications:TheNewBroadbandFrontierThecurrentstateofresearchandtechnologyinEHFsatellitecommunicationsarediscussedinthispaperalongwithrelatedfutureperspectives,applications,andservices.ByErnestinaCianca,MemberIEEE,TommasoRossi,AsherYahalom,YosefPinhasi
2、,JohnFarserotu,SeniorMemberIEEE,andClaudioSacchi,SeniorMemberIEEEABSTRACT
3、Theexploitationofextremelyhigh-frequencyKEYWORDS
4、Extremelyhigh-frequency(EHF);satellitecom-(EHF)bands(30–300GHz)forbroadbandtransmissionovermunications;satellitenetworkingsatellitelinksiscurrentlyahotresearc
5、htopic.Inparticular,theQ-Vband(30–50GHz)andW-band(75–110GHz)seemtoofferI.INTRODUCTIONverypromisingperspectives.ThispaperaimsatpresentinganoverviewofthecurrentstatusofresearchandtechnologyinIntheperspectiveofreachingglobalandubiquitousEHFsatellitecommunicationsandtakingalookatfutur
6、ewirelessconnectivity,thesatellitesegmentwillplayakeyperspectivesintermsofapplicationsandservices.Challengesrole.Theclaimedobjectiveistoreachso-calledBgigabitandopenissuesareadequatelyconsideredtogetherwithsomeconnectivity[inordertomakethesatellitesegmentaviablesolutionsandfutured
7、evelopments.TheproposedpotentialBbackboneintheair[fornext-generationdigitalanalysishighlightedtheneedforareliablepropagationmodelcommunicationservices,characterizedbyhigh-speedandbasedonexperimentaldataacquiredinorbit.Othercriticalstringentquality-of-service(QoS)requirements[1].Su
8、chaspectsshouldbefacedatthePHY-layerlevelinordertoanambitiousobjectiveisnotrealisticallyachievablebymanagethetradeoffbetweenpowerefficiency,spectraleffi-exploitingcurrentlysaturatedbandwidthportions(Kuandciency,androbustnessagainstlinkdistortions.Asfarasnet-Kabands).Forthisreason,
9、thepushtowardshigherworkingaspectsareconcerned,thelargebandwidthfrequencieswillcharacterizefutureR&Donsatelliteavailabilityshouldbeconvertedintoincreasedthroughputbycommunications[2].ThepropheticconsiderationofmeansofsuitableradioresourcemanagementandtransportW.E.Morrow,reportedin
10、theissuescanningofPro-protocols,a
