ETSI EN 301 787 V1.1.1 (2001-04)

Fixed Radio Systems; Point-to-Point equipment; Parameters for radio systems for the transmission of Sub-STM-0 digital signals operating in the 18 GHz frequency band

DEN/TM-04096a

Fiksni radijski sistemi – Oprema tipa točka-točka – Parametri za radijske sisteme za prenos digitalnih signalov Sub-STM-0, ki delujejo v frekvenčnem pasu 18 GHz

General Information

• Status: Published
• Publication Date: 17-Apr-2001
• Technical Committee: TM 4 - TM Fixed Radio Systems
• Current Stage: 13 - TB decision to make document historical
• Completion Date: 10-May-2007
• Ref Project: SIST EN 301 787 V1.1.1:2003 - Fixed Radio Systems; Point-to-Point equipment; Parameters for radio systems for the transmission of Sub-STM-0 digital signals operating in the 18 GHz frequency band

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fixed Radio Systems; Point-to-Point equipment; Parameters for radio systems for the transmission of Sub-STM-0 digital signals operating in the 18 GHz frequency band33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systems33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 301 787 Version 1.1.1SIST EN 301 787 V1.1.1:2003en01-december-2003SIST EN 301 787 V1.1.1:2003SLOVENSKI
STANDARD



SIST EN 301 787 V1.1.1:2003



ETSIEN301787V1.1.1(2001-04)EuropeanStandard(Telecommunicationsseries)FixedRadioSystems;Point-to-Pointequipment;ParametersforradiosystemsforthetransmissionofSub-STM-0digitalsignalsoperatinginthe18GHzfrequencybandSIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)2ReferenceDEN/TM-04096aKeywordsDRRS,point-to-point,radio,transmission,SDHETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.73Symbolsandabbreviations.93.1Symbols.93.2Abbreviations.94Generalcharacteristics.104.1Frequencybandsandchannelarrangements.104.1.1Channelarrangements.104.1.2Channelspacingforsystemsoperatingonthesameroute.104.2Compatibilityrequirementsbetweensystems.104.3Performanceandavailabilityrequirements.114.4Environmentalconditions.114.4.1Equipmentwithinweatherprotectedlocations(indoorlocations).114.4.2Equipmentfornon-weatherprotectedlocations(outdoorlocations).114.5Powersupply.114.6Electromagneticcompatibility.114.7Systemblockdiagram.124.8TelecommunicationsManagementNetwork(TMN)interface.124.9Branching/feeder/antennacharacteristics.124.9.1Antennaradiationpatterns.124.9.2Antennacross-PolarDiscrimination(XPD).124.9.3AntennaInter-PortIsolation(IPI).124.9.4Waveguideflanges(orotherconnectors).134.9.5ReturnLoss(RL).135SystemParameters.135.1Transmissioncapacity.135.2Basebandparameters.135.2.1Plesiochronousinterfaces.135.2.2SDHbasebandinterface.145.3Transmittercharacteristics.145.3.1Transmitterpowerrange.145.3.2Transmitpowerandfrequencycontrol.155.3.2.1AutomaticTransmitPowerControl(ATPC).155.3.2.2RemoteTransmitPowerControl(RTPC).155.3.2.3RemoteFrequencyControl(RFC).155.3.3Transmitteroutputpowertolerance.155.3.4TransmitLocalOscillator(LO)frequencyarrangements.165.3.5RFspectrummask.165.3.6DiscreteCWlinesexceedingthespectrummasklimit.175.3.6.1Spectrallinesatthesymbolrate.175.3.6.2Otherspectrallines.185.3.7Spuriousemissions.185.3.7.1Spuriousemissions-external.195.3.7.2Spuriousemissions-internal.195.3.8Radiofrequencytolerance.195.4Receivercharacteristics.195.4.1Inputlevelrange.195.4.2Receiverlocaloscillatorfrequencyarrangements.195.4.3Spuriousemissions.195.4.3.1Spuriousemissions-internal.195.5Systemperformancewithoutdiversity.19SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)45.5.1BERasafunctionofReceiverinputSignalLevel(RSL).205.5.2ResidualBER.205.5.3Interferencesensitivity.205.5.3.1Co-channelinterferencesensitivity.205.5.3.2FirstadjacentchannelInterference.215.5.3.3CWSpuriousInterference.215.5.3.4Front-endnon-linearityrequirements(two-toneCWspuriousinterference).215.5.4Distortionsensitivity.215.6Systemcharacteristicswithdiversity.21AnnexA(informative):Additionalinformation.22A.1Feeder/antennaRL.22A.2AutomaticTransmitPowerControl(ATPC).22A.3RBER.23A.4Co-channelandadjacentchannelinterference.24AnnexB(normative):Systemtypecodesforregulatoryprocedures.27AnnexC(informative):Bibliography.28History.29SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeTransmissionandMultiplexing(TM).ThepresentdocumenthasbeenpreviouslypublishedasanETSITechnicalSpecificationunderTS101787V1.1.1.NationaltranspositiondatesDateofadoptionofthisEN:13April2001DateoflatestannouncementofthisEN(doa):31July2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2002DateofwithdrawalofanyconflictingNationalStandard(dow):31January2002SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)61ScopeThepresentdocumentspecifiestheminimumperformanceparametersforterrestrialdigitalfixedserviceradiocommunicationsequipmentsoperatinginthe18GHzfrequencybandandprovidesforthefollowing:-systemtypescodesforregulatoryuniquereferencetothevarioussystemtypesdetailedinthepresentdocument,refertoannexB(normative).Digitalsystemsareintendedtobeusedforpoint-to-pointconnectionsinlocalandregionalnetworksatdataratesofSynchronousTransportModule.DigitalsystemsconsideredinthepresentdocumentwillbeabletomeettheperformanceobjectivesoftheITU-Rnationalportionofthereferencepath,i.e.ITU-RRecommendationF.1189-1[23]andtheperformanceobjectivesdetailedinITU-TRecommendationG.826[30]andinITU-TRecommendationG.828[31].Theparameterstobespecifiedfallintotwocategories:a)thosethatarerequiredtoprovidecompatibilitybetweenchannelsfromdifferentsourcesofequipmentonthesameroute,connectedeither:-toseparateantennas;or-toseparatepolarizationsofthesameantenna.b)parametersdefiningthetransmissionqualityoftheproposedsystem.ThepresentdocumentdealswithRadioFrequency(RF)andbasebandcharacteristicsrelevanttoSubSTM-0SynchronousDigitalHierarchy(SDH)transmissionsystems.Antenna/feedersystemrequirementsarecoveredinEN300833[13].ThesedigitalsystemscapacitiesshallbeinaccordancewithITU-TRecommendationG.708[27].Thepresentdocumentdoesnotcontainaspectsrelatedtotestproceduresandtestconditions,howevertheyaretobefoundinEN301126-1[14].Asthemaximumtransmissionrateinagivenbandwidthdependsonsystemspectralefficiency,differentequipmentclassesaredefined:Class1:equipmentspectralefficiencybasedontypically16or32-statesmodulationscheme(e.g.16-QAM,32-QAM,orequivalent);Class2:equipmentspectralefficiencybasedontypically64or128-statesmodulationscheme(e.g.64-QAM,128-QAM,orequivalent).Theaboveclassesareindicativeonlyanddonotimplyanyconstrainttotheactualmodulationformat,providedthatalltherequirementsinthepresentdocumentaremet.SafetyaspectsareoutsidethemandateofETSIandtheywillnotbeconsideredinthepresentdocument.HowevercompliancetoEN60950[1]willberequiredtocomplywithECDirectiveR&TTE.TechnicalbackgroundformostoftheparametersandrequirementsreferredinthepresentdocumentmaybefoundinTR101036-1[17].SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)72ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]EN60950:"Safetyofinformationtechnologyequipment".[2]CEPT/ERC/REC12-03:"Harmonizedradiofrequencychannelarrangementsfordigitalterrestrialfixedsystemsoperatingintheband17,7GHzto19,7GHz".[3]CEPT/ERCRecommendation74-01:"Spuriousemissions".[4]CouncilDirective89/336/EECof3May1989ontheapproximationofthelawsoftheMemberStatesrelatingtoelectromagneticcompatibility.[5]ETSIETS300019:"EquipmentEngineering(EE);Environmentalconditionsandenvironmentaltestsfortelecommunicationsequipment".[6]ETSIETS300132-1:"EquipmentEngineering(EE);Powersupplyinterfaceattheinputtotelecommunicationsequipment;Part1:Operatedbyalternatingcurrent(ac)derivedfromdirectcurrent(dc)sources".[7]ETSIETS300132-2:"EquipmentEngineering(EE);Powersupplyinterfaceattheinputtotelecommunicationsequipment;Part2:Operatedbydirectcurrent(dc)".[8]ETSIEN300385:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforfixedradiolinksandancillaryequipment".[9]ETSIETS300635:"TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH);RadiospecificfunctionalblocksfortransmissionofMxSTM-N".[10]ETSIETS300638:"TransmissionandMultiplexing(TM);DigitalRadioRelaySystems(DRRS);Fixedpoint-to-pointradiolinkequipmentforthetransmissionofdigitalsignalsandanaloguevideosignaloperatinginthefrequencybands10GHzand14GHzwith20MHzalternatechannelspacing".[11]ETSIEN300645:"TelecommunicationsManagementNetwork(TMN);SynchronousDigitalHierarchy(SDH)radiorelayequipment;InformationmodelforuseonQinterfaces".[12]ETSIETS300785:"TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH);RadiospecificfunctionalblocksfortransmissionofMxsub-STM-1".[13]ETSIEN300833:"FixedRadioSystems;Point-to-pointAntennas;Antennasforpoint-to-pointfixedradiosystemsoperatinginthefrequencyband3GHzto60GHz".[14]ETSIEN301126-1(V1.1.2):"FixedRadioSystems;Conformancetesting;Part1:Point-to-pointequipment-Definitions,generalrequirementsandtestprocedures".[15]ETSIEN301489-4:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforradioequipmentandservices;Part4:Specificconditionsforfixedradiolinksandancillaryequipmentandservices".[16]ETSITR101035(V1.1.3):"Transmissionandmultiplexing(TM);SynchronousDigitalHierarchy(SDH)aspectsregardingDigitalRadioRelaySystems(DRRS)".[17]ETSITR101036-1:"FixedRadioSystems;Point-to-pointequipment;Genericwordingsforstandardsondigitalradiosystemscharacteristics;Part1:Generalaspectsandpoint-to-pointequipmentparameters".SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)8[18]IEC154-2:"Flangesforwaveguides.Part2:Relevantspecificationsforflangesforordinaryrectangularwaveguides".[19]ITU-RRecommendationF.595-6:"Radio-frequencychannelarrangementsforradio-relaysystemsoperatinginthe18GHzfrequencyband".[20]ITU-RRecommendationF.750-3:"Architecturesandfunctionalaspectsofradio-relaysystemsfor(SDH)-basednetworks".[21]ITU-RRecommendationF.751-2:"Transmissioncharacteristicsandperformancerequirementsofradio-relaysystemsforSDH-basednetworks".[22]ITU-RRecommendationF.1102:"Characteristicsofradio-relaysystemsoperatinginfrequencybandsaboveabout17GHz".[23]ITU-RRecommendationF.1189-1:"Errorperformanceobjectivesforconstantbitratedigitalpathsatorabovetheprimaryratecarriedbydigitalradio-relaysystemswhichmayformpartorallofthenationalportionofa27500kmhypotheticalreferencepath".[24]ITU-RRecommendationF.1191-1:"Bandwidthsandunwantedemissionsofdigitalradio-relaysystems".[25]ITU-TRecommendationG.703(1991):"Physical/electricalcharacteristicsofhierarchicaldigitalinterfaces".[26]ITU-TRecommendationG.707(1996):"Networknodeinterfaceforthesynchronousdigitalhierarchy(SDH)".[27]ITU-TRecommendationG.708:"SubSTM-0networknodeinterfaceforthesynchronousdigitalhierarchy(SDH)".[28]ITU-TRecommendationG.783(1994):"Characteristicsofsynchronousdigitalhierarchy(SDH)equipmentfunctionalblocks".[29]ITU-TRecommendationG.784(1994):"Synchronousdigitalhierarchy(SDH)management".[30]ITU-TRecommendationG.826:"Errorperformanceparametersandobjectivesforinternational,constantbitratedigitalpathsatorabovetheprimaryrate".[31]ITU-TRecommendationG.828:"Errorperformanceparametersandobjectivesforinternational,constantbitratesynchronousdigitalpaths".[32]ITU-TRecommendationG.957(1995):"Opticalinterfacesforequipmentsandsystemsrelatingtothesynchronousdigitalhierarchy".[33]ITU-TRecommendationO.151(1992):"Errorperformancemeasuringequipmentoperatingattheprimaryrateandabove".[34]ITU-TRecommendationO.181(1996):"EquipmenttoassesserrorperformanceonSTM-Ninterfaces".[35]ITU-RRecommendationP.530-8:"Propagationdataandpredictionmethodsrequiredforthedesignofterrestrialline-of-sightsystems".[36]ITU-TRecommendationG.774(1992):"Synchronousdigitalhierarchy(SDH)managementinformationmodelforthenetworkelementview".SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)93Symbolsandabbreviations3.1SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:dBdecibeldBcdecibelrelativetomeancarrierpowerdBidecibelrelativetoanisotropicradiatordBmdecibelrelativeto1milliWattdBWdecibelrelativeto1WattGHzGigahertzkHzkilohertzMbit/sMega-bitspersecondMHzMegahertzppmpartspermillion3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:acalternatingcurrentATPCAutomaticTransmitPowerControlAUAdministrativeUnitBBBaseBandBBERBackgroundBlockErrorRatioBERBitErrorRateC/ICarriertoInterferencerateCMICodedMarkInversionCSminMinimumpracticalchannelseparation(foragivenradio-frequencychannelarrangement)CWContinuousWavedcdirectcurrentDRRSDigitalRadioRelaySystemsEMCElectroMagneticCompatibilityESRErroredSecondRatioIECInternationalElectrotechnicalCommissionIFIntermediateFrequencyIPIInter-PortIsolationLOLocalOscillatorPDHPlesiochronousDigitalHierarchyPRBSPseudoRandomBinarySequenceQAMQuadratureAmplitudeModulationRBERResidualBERRFRadioFrequencyRFCRemoteFrequencyControlRLReturnLossRSLReceiveSignalLevelRTPCRemoteTransmitPowerControlSDHSynchronousDigitalHierarchySOHSectionOverHeadSTM-0MediumcapacitySDHradiotransportmodule51,840Mbit/sAU-3equivalentSTM-NSynchronousTransportModule,levelNSub-STM-0LowcapacitySDHradiotransportmodule(ntimesVC-12orVC2equivalent)TMNTelecommunicationsManagementNetworkTUTributaryUnitTUGTributaryUnitGroupXPDCross-PolarDiscriminationSIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)104Generalcharacteristics4.1Frequencybandsandchannelarrangements4.1.1ChannelarrangementsThefrequencyrangeis17,7GHzto19,7GHz.ThechannelplanshallbeinaccordancewithCEPT/ERC/REC12-03[2].NOTE:CEPTRecommendation12-03allowsforlow-capacitychannelarrangementsonanationalbasis.ITU-RRecommendationF.595-6[19]detailsthevariouschannelarrangementsincludinglow-capacitychannelarrangements.4.1.2ChannelspacingforsystemsoperatingonthesamerouteSystemcapacity(systembitrate)andtheirrelevantchannelspacinginthepresentdocumentarereportedintable1.Thesystemisdefinedintheclause5.1.NOTE:Accordingtosystemscharacteristicstheequipmentcanbeconnectedeithertoseparateantennasoronaseparatepolarizationtothesameantenna.Table1:DigitalsystemschannelspacingforvariousbitratesSystemcapacity[Mbit/s]9792(sSTM-14)14400(sSTM-22)Channelspacing3,5MHz3,5MHzsSTM-2ninterfaceASDHtransmissioninterfacewhichtransportsanumber'n'timesTUG2(TributaryUnitGroup-2),asdefinedinITU-TRecommendationG.708[27].sSTM-1kinterfaceASDHtransmissioninterfacewhichtransportsanumber'k'timesTU–12(TributaryUnit-12),asdefinedinITU-TRecommendationG.708[27].Forregulatorypurposesinnationalproceduresforlicensingradioequipmentsaccordingtothepresentdocument,theabovesystemtypesshallbeidentifiedbythe"systemtypecodes"reportedinnormativeannexB.4.2CompatibilityrequirementsbetweensystemsThecompatibilityrequirementsbetweensystemsareasfollows:-thereshallbenorequirementtooperatetransmittingequipmentfromonemanufacturerwithreceivingequipmentfromanother;-thereshallnotbearequirementtomultiplexdifferentmanufacturerequipmentonthesamepolarizationofthesameantenna;-theremaybearequirementtomultiplexdifferentmanufacturerequipmentondifferentpolarizationofthesameantenna.Thiswillnotapplytosystemswithintegralantenna;-dependingontheapplication,itshallbepossibletooperatethesysteminverticaland/orhorizontalpolarization,ifrequiredbythechannelarrangement.SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)114.3PerformanceandavailabilityrequirementsDigitalequipmentshallbedesignedinordertomeetnetworkperformanceandavailabilityrequirementsforeseenbyITU-TRecommendationG.826[30]andbyITU-TRecommendationG.828[31]whenpublished,followingthecriteriadefinedinITU-RRecommendationF.1189-1[23]forthenationalportionofthedigitalconnection.TheimplicationofthelinkdesignontheperformanceisrecognizedandthegeneraldesigncriteriareportedinITU-RRecommendationsP.530-8[35]andF.1102[22]shallbeapplied.4.4EnvironmentalconditionsTheequipmentshallberequiredtomeettheenvironmentalconditionssetoutinETS300019[5]whichdefinesweatherprotectedandnon-weatherprotectedlocations,classesandtestseverity.Themanufacturershallstatewhichclasstheequipmentisdesignedtowithstand.4.4.1Equipmentwithinweatherprotectedlocations(indoorlocations)Equipmentintendedforoperationwithintemperature-controlledlocationsorpartiallytemperature-controlledlocationsshallmeettherequirementsofETS300019[5]classes3.1and3.2respectively.Optionally,themorestringentrequirementsofETS300019[5]classes3.3(non-temperaturecontrolledlocations),3.4(siteswithheattrap)and3.5(shelteredlocations)maybeapplied.4.4.2Equipmentfornon-weatherprotectedlocations(outdoorlocations)Equipmentintendedforoperationwithinnon-weather-protectedlocationsshallmeettherequirementsofETS300019[5],class4.1or4.1E.Class4.1appliestomanyEuropeancountriesandclass4.1EappliestoallEuropeancountries.4.5PowersupplyThepowersupplyinterfaceshallbeinaccordancewiththecharacteristicsofoneormoreofthesecondaryvoltagesforeseeninETS300132-1[6]andETS300132-2[7].NOTE:SomeapplicationsmayrequiresecondaryvoltagesthatarenotcoveredbyETS300132-1[6]andETS300132-2[7].4.6ElectromagneticcompatibilityEquipmentshalloperateundertheconditionsspecifiedinEN300385[8]orEN301489-4[15].SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)124.7SystemblockdiagramMODULATORTRANSMITTERZ'E'A'TRANSMITRFFILTERB'BRANCHINGC'D'FEEDERFEEDERBRANCHINGRFFILTERD(*)CBRECEIVEARECEIVEREDEMODULATORZMAINRECEIVERPATH(*)NOFILTERINGINCLUDED(*)NOTE1:Forthepurposeofdefiningthemeasurementpoints,thebranchingnetworkdoesnotincludeahybrid.NOTE2:Thepointsshownabovearereferencepointsonly;pointsCandC',DandD'ingeneralcoincide.NOTE3:PointsBandC,B'andC'maycoincidewhensimpleduplexerisused.Figure1:Systemblockdiagram4.8TelecommunicationsManagementNetwork(TMN)interfaceForSDHequipmentITU-TRecommendationG.784[29]andG.774[36]andITU-RRecommendationsF.750-3[20]andF.751-2[21]givethegeneralrequirementsforTMNinterfaceandfunctionality.ETS300635[9],ETS300785[12]andEN300645[11]givetheradiospecificfunctionalblockdescriptionandtherelatedradiofragmentinformationmodelrespectively.NOTE:ThestandardizationofTMNinterfacefunctionalitiesisunderstudyinETSITMNandwillbeapplicabletotheradiorelaysystemsconsideredinthepresentdocument.4.9Branching/feeder/antennacharacteristics4.9.1AntennaradiationpatternsSeeEN300833[13].4.9.2Antennacross-PolarDiscrimination(XPD)SeeEN300833[13].4.9.3AntennaInter-PortIsolation(IPI)SeeEN300833[13].SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)134.9.4Waveguideflanges(orotherconnectors)WhenflangesarerequiredatreferencepointC,C',thefollowingshallbeusedaccordingtoIEC154-2[18].4.9.5ReturnLoss(RL)Equipmentaccordingtothepresentdocumentarelikelytohaveintegralantennasorverysimilartechnicalsolutions,withoutlongfeederconnections;RLisnotconsideredanessentialrequirement.Whenanantennaisanintegralpartoftheequipmentthereshallbenorequirement.Forfeeder/antennaRLrequirementseeannexA.5SystemParameters5.1TransmissioncapacityForthescopeofthepresentdocument,thesystemcapacityshouldbeintendedasthecapacitycarriedbyasinglechannel,whereanysinglechannelcancarry4or62Mbit/sPDHchannels.ThepayloadcapacityshouldbeintendedasanumberoftheVCgroupcarriedbyasinglesSTM-1korsSTM-2nframe.ThesSTM-1kandsSTM-2ninterfacesaredefinedbyITU-TRecommendationG.708[27].Therelationshipbetweensystemcapacity,payloadcapacityandPDHcapacityisshownbelow:Table2:Relationshipbetweensystemcapacity,payloadcapacityandPDHcapacityPDHchannelcapacity[Mbit/s]4x20486x2048Payloadcapacity4xTU-12(VC12)2xTUG2(VC2)Systemcapacity[Mbit/s]9792(sSTM-14)14400(sSTM-22)5.2Basebandparameters5.2.1PlesiochronousinterfacesPlesiochronousinterfacesat2Mbit/sshallcomplywithITU-TRecommendationG.703[25].Thesebasebandsignalsshallbecarried'openport',i.e.inatransparentmannerindependentoftheircontentandtheyshallbemappedintoaSub-STM-0signalasdescribedinITU-TRecommendationG.708[27].Parametersforservicechannelsandwaysidetrafficchannelsareoutsidethescopeofthepresentdocument.SIST EN 301 787 V1.1.1:2003



ETSIETSIEN301787V1.1.1(2001-04)145.2.2SDHbasebandinterfaceTheSDHbasebandinterfaceshallbeinaccordancewithITU-TRecommendationsG.703[25],G.707[26],G.783[28],G.784[29],G.957[32],ETS300635[9],ETS300638[10].Forsub-STM-0ratesITU-TRecommendationG.708[27]mappingapplies.SubSTM-0physicalinterfacesareunderdiscussionbytheITU.ApartiallyfilledSTM-1interfacemaybeusedtoconnectSub-STM-0interfaces.TwoSTM-1interfacesshallbepossible:-CodedMarkInversion(CMI)electrical(ITU-TRecommendationG.703[25]);and-Optical(ITU-TRecommendationG.957[32]).TheuseofreservedbytescontainedintheSectionOverHead(SOH),andtheirterminationshallbeinaccordancewithITU-RRecommendationsF.750-3[20],F.751-2[21]andforsub-STM-0withITU-TRecommendationG.708[27].NOTE:FurtherdetailsonthepossibleuseoftheSOHbytesreservedforfutureinternationalstandardizationaregiveninTR101035[16].5.3TransmittercharacteristicsThespecifiedtransmittercharacteristicsshallbemetwiththeappropriatebasebandsignalsappliedatreferencepointZ'offigure1.ForPDHinterfacethisshallbeaPseudoRandomBinarySequence(PRBS)accordingITU-TRecommendationO.151[33]whileforSDHinterfaceITU-TRecommendationO.181[34]testsignalapplies.5.3.1TransmitterpowerrangeTransmittermaximummeanoutputpoweratreferencepointC'ofthesystemblockdiagram(figure1)shallnotexceed+25dBmforequipment(includingtoleranceand,ifapplicable,ATPC/RTPCinfluence).Regulatoryadministrationsmaydefinenominal
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