ETSI EN 301 277 V1.1.1 (2000-02)

Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using Co-Channel Dual Polarized (CCDP) operation

DEN/TM-04041

Fiksni radijski sistemi – Oprema tipa točka-točka – Visoko zmogljivi digitalni radijski sistemi, ki oddajajo STM-4 ali 4 x STM-1 v radiofrekvenčnem kanalu 40 MHz in uporabljajo dvojno polarizacijo prek sosednjega kanala (CCDP)

General Information

• Status: Published
• Publication Date: 23-Feb-2000
• 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 301 277 V1.1.1:2003 - Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using Co-Channel Dual Polarized (CCDP) operation

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.'3Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using Co-Channel Dual Polarized (CCDP) operation33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systems33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 301 277 Version 1.1.1SIST EN 301 277 V1.1.1:2003en01-december-2003SIST EN 301 277 V1.1.1:2003SLOVENSKI
STANDARD



SIST EN 301 277 V1.1.1:2003



ETSIEN301277V1.1.1(2000-02)EuropeanStandard(Telecommunicationsseries)FixedRadioSystems;Point-to-pointequipment;HighcapacitydigitalradiosystemstransmittingSTM-4or4xSTM-1ina40MHzradiofrequencychannelusingCo-ChannelDualPolarized(CCDP)operationSIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)2ReferenceDEN/TM-04041Keywordsdigital,DRRS,radio,SDH,STM,transmission,point-to-pointETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/[e-mail]ETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]Ideliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Symbolsandabbreviations.83.1Symbols.83.2Abbreviations.94Generalcharacteristics.94.1Frequencybandsandchannelarrangements.94.2Modesofoperation.104.3Compatibilityrequirements.104.4Performanceandavailabilityrequirements.104.5Environmentalconditions.104.5.1Equipmentwithinweatherprotectedlocations(indoorlocations).104.5.2Equipmentfornon-weatherprotectedlocations(outdoorlocations).104.6Mechanicaldimensions.104.7Powersupply.114.8ElectromagneticCompatibility(EMC).114.9TMNinterfaces.114.10Blockdiagram.114.11Branching/feeder/antennarequirements.124.11.1Antennaradiationpattern.124.11.2Antennacross-polardiscrimination.125SDHbasebandcharacteristics.126Transmittercharacteristics.126.1Outputpower.126.2AutomaticTransmitPowercontrol(ATPC).136.3RemoteTransmitPowerControl(RTPC).136.4RFspectrummasks.136.5Spectrallinesatthesymbolrate.166.6Spuriousemissions.166.6.1Spuriousemissions-External.166.6.2Spuriousemissions-Internal.166.7Radiofrequencytolerance.176.8Returnloss.176.9Intermodulationproducts.177Receivercharacteristics.177.1Localoscillatorfrequencytolerance.177.2Receiverimagerejection.177.3Spuriousemissions.177.3.1Spuriousemissions-External.177.3.2Spuriousemissions-Internal.177.4Inputlevelrange.187.5Returnloss.188Systemperformancewithoutdiversity.188.1EquipmentbackgroundBER.188.2BERasafunctionofreceiveinputlevel(dBm).188.3Interferencesensitivity.198.3.1Co-channel"external"interferencesensitivity.198.3.2Adjacentchannelinterferencesensitivity.198.4Distortionsensitivity.20SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)48.5Sensitivitytodynamicfading.209Systemcharacteristicswithdiversity.209.1Differentialdelaycompensation.209.2BERperformance.219.3Interferencesensitivity.219.4Distortionsensitivity.2110Crosspolarinterferencesensitivity.2110.1Co-channel"internal"interferencesensitivityinflatfadingconditions.2110.2Co-channel"internal"interferencesensitivityindispersivefadingconditions.22AnnexA(informative):Additionalinformation.23A.1ATPC.23A.2Branching,feederandantenna.23A.2.1Antennaradiationpatternenvelopes.23A.2.2Cross-polardiscrimination(XPD).23A.2.3Interportisolation.23A.2.4Feeder/antennareturnloss.23A.3Compatibility.24A.4Mechanicalrequirements.24Bibliography.25History.26SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeTransmissionandMultiplexing(TM).Theformertitleofthepresentdocumentwas:"TransmissionandMultiplexing(TM);DigitalRadioRelaySystems(DRRS);HighcapacityDRRStransmittingSTM-4or4xSTM-1ina40MHzradiofrequencychannelusingCo-ChannelDualPolarized(CCDP)operation".NationaltranspositiondatesDateofadoptionofthisEN:21January2000DateoflatestannouncementofthisEN(doa):30April2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31October2000DateofwithdrawalofanyconflictingNationalStandard(dow):31October2000SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)61ScopeThepresentdocumentdefinestechnicalparametersforahighcapacityDigitalRadioRelaySystem(DRRS)operatinginfrequencybandswith40MHzchannelspacinge.g.the4GHz,5GHz,U6GHzand11GHzbands.ThecapacityshouldbeSTM-4or4×STM-1per40MHzRF-channelbyusingbothpolarizationsintheco-channeldualpolarized(CCDP)modeofoperation.TheareaofapplicationoftheseDRRSisforeseentobeinregionalandtrunknetworksformingpartofaSDH-networkincludingSTM-4rings.SystemsconsideredinthepresentdocumentshouldbeabletorespectITU-Rhighgradeperformanceobjectives.Thesystemsconsideredshouldoperateinthesenetworkshavingregardforexistinghoplength,whichareconsideredtobenormallyuptoabout30kmto40kmforregionalandabout60kmfortrunknetworks,respectively.Hoplengthsgreaterthanthislatterlengthareusedinspecialapplications.ForinformationaboutcompatibilitywithothersystemsseeclauseA.3.Theparametersspecifiedfallintotwocategories:a)Thosethatarerequiredtoprovidecompatibilitybetweenchannelsfromdifferentsourcesofequipmentonthesamerouteconnectedtoseparateantennas.NOTE:Equipmentsuppliedbydifferentmanufacturersonthesamepathorexistingradio-relaysystemsoperateondifferentfrequencies.b)Parametersdefiningthetransmissionqualityoftheproposedsystem.ThestandardizationdealswithbasebandandRFcharacteristicsrelevanttoSDH.Antenna/feedersystemrequirementsarealsoconsidered.BasebandinterfaceshavetobeconsideredforSTM-1signalsandSTM-4signalsinaccordancewithITU-TRecommendationsG.707[6]andG.957[21]respectively.2ReferencesThefollowingdocumentscontainprovisions,which,throughreferenceinthistext,constituteprovisionsofthepresentdocument.•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.•Foraspecificreference,subsequentrevisionsdonotapply.•Foranon-specificreference,subsequentrevisionsdoapply.•Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ITU-RRecommendationF.384-6(1995):"Radio-frequencychannelarrangementsformediumandhighcapacityanalogueordigitalradio-relaysystemsoperatingintheupper6GHzband".[2]ITU-RRecommendationF.387-7(1995):"Radio-frequencychannelarrangementsforradio-relaysystemsoperatinginthe11GHzband".[3]ITU-RRecommendationF.635-4(1997):"Radio-frequencychannelarrangementsbasedonahomogeneouspatternforradio-relaysystemsoperatinginthe4GHzband".[4]ITU-RRecommendationF.750-3(1997):"Architecturesandfunctionalaspectsofradio-relaysystemsforSDH-basednetworks".SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)7[5]ITU-RRecommendationF.1099-2(1997):"Radio-frequencychannelarrangementsforhigh-capacitydigitalradio-relaysystemsinthe5GHz(4400MHzto5000MHz)band".[6]ITU-TRecommendationG.707(1996):"Networknodeinterfaceforthesynchronousdigitalhierarchy(SDH)".[7]ITU-RRecommendationSM.329-7(1997):"SpuriousEmissions".[8]ITU-TRecommendationG.773(1993):"ProtocolsuitesforQ-interfacesformanagementoftransmissionsystems".[9]ITU-TRecommendationG.784(1999):"Synchronousdigitalhierarchy(SDH)management".[10]ETS300019(allparts):"Equipmentengineering(EE);Environmentalconditionsandenvironmentaltestsfortelecommunicationsequipment".[11]ETS300119(allparts):"Equipmentengineering(EE);Europeantelecommunicationstandardforequipmentpractice".[12]EN300385:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforfixedradiolinksandancillaryequipment".[13]ETS300132(allparts):"EquipmentEngineering(EE);Powersupplyinterfaceattheinputtotelecommunicationsequipment".[14]ETS300635:"TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH);RadiospecificfunctionalblocksfortransmissionofMxSTM-N".[15]EN300833:"FixedRadioSystems;PointtoPointAntennas;Antennasforpoint-to-pointfixedradiosystemsoperatinginthefrequencyband3GHzto60GHz".[16]ITU-TRecommendationG.703(1991):"Physical/electricalcharacteristicsofhierarchicaldigitalinterfaces".[17]ITU-RRecommendationF.1191-1(1997):"Bandwidthsandunwantedemissionsofdigitalradio-relaysystems".[18]ITU-TRecommendationO.151(1992):"Errorperformancemeasuringequipmentoperatingattheprimaryrateandabove".[19]ITU-TRecommendationO.181(1996):"EquipmenttoassesserrorperformanceonSTM-Ninterfaces".[20]ITU-TRecommendationG.783(1997):"Characteristicsofsynchronousdigitalhierarchy(SDH)equipmentfunctionalblocks".[21]ITU-TRecommendationG.957(1995):"Opticalinterfacesforequipmentsandsystemsrelatingtothesynchronousdigitalhierarchy".[22]TR101035:"TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH)aspectsregardingDigitalRadioRelaySystems(DRRS)".[23]ITU-RRecommendationF.695(1990):"Availabilityobjectivesforrealdigitalradio-relaylinksformingpartofahigh-gradecircuitwithinanintegratedservicesdigitalnetwork".[24]ITU-RRecommendationF.1092-1(1997):"Errorperformanceobjectivesforconstantbitratedigitalpathatorabovetheprimaryratecarriedbydigitalradio-relaysystemswhichmayformpartoftheinternationalportionofa27500kmhypothethicalreferencepath".[25]ITU-RRecommendationF.1189-1(1997):"Errorperformanceobjectivesforconstantbitratedigitalpathsatorabovetheprimaryratecarriedbydigitalradio-relaysystemswhichmayformpartorallofthenationalportionofa27500kmhypotheticalreferencepath".[26]ITU-RRecommendationF.557-4(1997):"Availabilityobjectiveforradio-relaysystemsoverahypotheticalreferencecircuitandahypotheticalreferencedigitalpath".SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)8[27]ITU-TRecommendationG.826(1996):"Errorperformanceparametersandobjectivesforinternational,constantbitratedigitalpathsatorabovetheprimaryrate".[28]ITU-TRecommendationG.827(1996):"Availabilityparametersandobjectivesforpathelementsofinternationalconstantbit-ratedigitalpathsatorabovetheprimaryrate".[29]ITU-RRecommendationF.752-1(1993):"Diversitytechniquesforradio-relaysystems".[30]ITU-RRecommendationF.1093-1(1997):"Effectsofmultipathpropagationonthedesignandoperationofline-of-sightdigitalradio-relaysystems".[31]ITU-RRecommendationF.1101(1993):"Characteristicsofdigitalradio-relaysystemsbelowabout17GHz".[32]EN301127:"TransmissionandMultiplexing(TM);DigitalRadioRelaySystems(DRRS);SynchronousDigitalHierarchy(SDH);HighcapacityDRRScarryingSDHsignals(2xSTM-1)infrequencybandswithabout30MHzchannelspacingandusingCo-ChannelDualPolarized(CCDP)operation".[33]CEPT/ERCRecommendation12-08:"Harmonizedradiofrequencychannelarrangementsandblockallocationsforlow,mediumandhighcapacitysystemsintheband3600MHzto4200MHz".[34]CEPT/ERCRecommendation14-02:"Radio-frequencychannelarrangementsformediumandhighcapacityanalogueorhighcapacitydigitalradio-relaysystemsoperatingintheband6425MHzto7125MHz".[35]CEPT/ERCRecommendation12-06:"Harmonizedradiofrequencychannelarrangementsfordigitalterrestrialfixedsystemsoperatingintheband10,7GHzto11,7GHz".[36]ETR019:"TransmissionandMultiplexing(TM);Specificationofnewgenerationhigh-capacitydigitalradiosystemscarrying2xSTM-1SynchronousDigitalHierarchy(SDH)signalsinfrequencybandswith40MHzchannelspacing".[37]TR101127:"TransmissionandMultiplexing(TM);DigitalRadioRelaySystems(DRRS);SynchronousDigitalHierarchy(SDH);HighcapacityDRRScarryingSDHsignals(1xSTM-1)infrequencybandswithabout30MHzchannelspacingandusingCo-ChannelDualPolarized(CCDP)operation".[38]CEPT/ERCRecommendation74-01:"Spuriousemissions".3Symbolsandabbreviations3.1SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:dBdecibeldBmdecibelrelativeto1mWGHzGigaHertzkmkilometreMbit/sMega-bitpersecondMHzMegaHertzm/smetrespersecondppmpartspermillionnsnanosecondW/m2WattspersquaremetreSIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)93.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ATPCAutomaticTransmitPowerControlBERBitErrorRateC/ICarriertoInterferenceratioCCDPCo-ChannelDualPolarizedIFIntermediateFrequencyNFDNetFilterDiscriminationPDHPlesiochronousDigitalHierachyQAMQadratureAmplitudeModulationRCSOHRadioComplementarySectraOverHeatRFRadioFrequencyRFCOHRadioFrameComplementaryOverHeatRXReceiverSDHSynchronousDigitalHierarchySOHSectionOverHeadSTM-1SynchronousTransportModuleLevel1(155,52Mbit/s)STM-4SynchronousTransportModuleLevel4(622Mbit/s)TMNTelecommunicationManagementNetworkTXTransmitterU6Upper6(GHzfrequencyband)XIFCrosspolarizationimprovementfactorduetoXPICoperationXPDCrossPolarDiscriminationXPICrossPolarInterferenceXPICCrossPolarInterferenceCanceller4Generalcharacteristics4.1FrequencybandsandchannelarrangementsThesystemshallberequiredtooperateinthefollowingfrequencybands,accordingtothespecifiedCEPTandITU-RRecommendationsonthequotedchannelspacings.4GHzCEPT/ERCRecommendation12-08[33],annexA,Part1with40MHzchannelspacingITU-TRecommendationG.826[27]andITU-RRecommendationF.635-4[3]with40MHzchannelspacing.ThecentregapbetweentransmittersandreceiversinITU-RRecommendationF.635-4[3]is80MHz.5GHzITU-RRecommendationF.1099-2[5]with40MHzchannelspacing.ThecentregapbetweentransmittersandreceiversinITU-RRecommendationF.1099-2[5]is60MHz.U6GHzCEPT/ERCRecommendation14-02[34]andITU-RRecommendationF.384-6[1]with40MHzchannelspacing.ThecentregapbetweentransmittersandreceiversinITU-RRecommendationF.384-6[1]is60MHz.11GHzCEPT/ERCRecommendation12-06[35]andITU-RRecommendationF.387-7[2]with40MHzchannelspacing.ThecentregapbetweentransmittersandreceiversinITU-RRecommendationF.387-7[2]is130MHz.SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)104.2ModesofoperationThemodeofoperationshouldbeCo-ChannelDualPolarized(CCDP)forallfrequencybandsuptoandincluding11GHz.IndefiningsystemcharacteristicsofCCDPsystems,theadditionallossesintroducedbybranchingnetworksshallbetakenintoaccount.Dependingontheimplementation(splitbranchingforevenandoddchannelsfollowedbya3dBlosshybridputatreferencepointCand/orC',narrowbandRFfiltersconceptorothers)additionallossesrangingfrom3dBto6dBshallbeconsideredinevaluatingtheavailablenetsystemgain.Whennarrow-bandRFfiltersareusedlossesaffectdirectlyreceiverthresholdsatreferencepointB.Asaconsequencethisshallbetakenintoaccountinspecifyingreceiverthresholdlimits.4.3CompatibilityrequirementsThereshallbenorequirementtooperatetransmittingequipmentfromonemanufacturerwithreceivingequipmentfromanother.4.4PerformanceandavailabilityrequirementsEquipmentshallbedesignedinordertomeetnetworkperformanceandavailabilityrequirementsforeseenbyITU-RRecommendationsF.695[23],F.1092-1[24],F.1189-1[25]andF.557-4[26]followingthecriteriadefinedinITU-TRecommendationsG.826[27]andG.827[28]fortheinternationalornationalportionofthedigitalpath.TheimplicationofthelinkdesignontheperformanceisrecognizedandthegeneraldesigncriteriareportedinITU-RRecommendationsF.752-1[29],F.1093-1[30],F.1101[31],F.1092-1[24]andF.1189-1[25]aretobeapplied.4.5EnvironmentalconditionsTheequipmentshallberequiredtomeettheenvironmentalconditionssetoutinETS300019[10]whichdefinesweatherprotectedandnon-weatherprotectedlocations,classesandtestseverity.Themanufacturershallstatewhichclasstheequipmentisdesignedtowithstand.4.5.1Equipmentwithinweatherprotectedlocations(indoorlocations)TheequipmentintendedforoperationwithintemperaturecontrolledlocationsorpartiallytemperaturecontrolledlocationsshallmeettherequirementsofETS300019[10]subclasses3.1and3.2respectively.Optionally,themorestringentrequirementsofETS300019[10]subclasses3.3(non-temperaturecontrolledlocations),3.4(siteswithheattrap)and3.5(shelteredlocations)maybeapplied.4.5.2Equipmentfornon-weatherprotectedlocations(outdoorlocations)Equipmentintendedforoperationwithinnon-weatherprotectedlocationsshallmeettherequirementsofETS300019[10]class4.1or4.1E.Class4.1appliestomanyEuropeancountriesandclass4.1EappliestoallEuropeancountries.Forsystemssuppliedwithinaspecificradiocabinetwhichgivesfullprotectionagainstprecipitation,wind,etc.theETS300019[10]subclasses3.3,3.4and3.5maybeappliedalsoforequipmentintendedforoperationinnon-weatherprotectedlocations.4.6MechanicaldimensionsSeeclauseA.4.SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)114.7PowersupplyThepowersupplyinterfaceshallbeinaccordancewiththecharacteristicsofoneormoreofthesecondaryvoltagesforeseeninETS300132[13].4.8ElectromagneticCompatibility(EMC)FixedServicesequipmentwithcapacityofabout2Mbit/sandaboveshalloperateundertheconditionsspecifiedinEN300385[12].4.9TMNinterfacesTMNinterface,ifany,shouldbeinaccordancewithITU-TRecommendationG.773[8].NOTE:ThestandardizationofTMNinterfacefunctionalitiesisunderresponsibilityanddevelopmentinETSITC/TMN,andwillbeapplicabletotheradiorelaysystemsconsideredinthepresentdocument.4.10BlockdiagramThereferencepointsareshowninfigure1.Thesepointsarereferencepointsonlyandnotnecessarilymeasurementpoints.Thereceiverdiversitypathshownintheblockdiagramrefersonlytocombiningtechniques.EV'MODEH'TRANSMITTERAV'TRANSMITTERAH'TRANSMITBV'BH'BRANCHINGCV'BRANCHINGCH'RFFILTERTRANSMITRFFILTERV'FEEDERDV'FEEDERDH'Z'EDVEDHRECEIVERADVRECEIVERADHRECEIVEBDVBDHBRANCHINGCBRANCHINGCRFFILTERRECEIVERFFILTERDVDHFEEDERDDVFEEDERDDH(*)(*)EVEHRECEIVERAVRECEIVERAHRECEIVEBVBHBRANCHINGCVBRANCHINGCHRFFILTERRECEIVERFFILTERVHFEEDERDVFEEDERDHZ(*)(*)(**)(**)(**)DIVERSITYRECEIVERPATHMAINRECEIVERPATHMODVHDEMODDEMODVHDEMODDEMODVHNOTE:ASTM-4or4xSTM-1interfaceisusedatZandZ'.(*)Nofilterincluded.(**)ConnectionatRF,iforbaseband.Figure1:BlockDiagramSIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)124.11Branching/feeder/antennarequirementsAntennasrequiredsystemspecifiedinthepresentdocumentshallcomplywithEN300833[15].TheclassofantennasconsideredasprerequisiteforthissystemarestatedinannexA.4.11.1AntennaradiationpatternSeeannexA.4.11.2Antennacross-polardiscriminationSeeannexA.5SDHbasebandcharacteristicsTheSDHbasebandinterfaceshallbeinaccordancewithITU-TRecommendationsG.703[16],G.707[6],G.783[20],G.784[9],G.957[21]andETS300635[14].Oneormoreofthefollowingbasebandinterfacesshallbeimplemented:-STM-4opticalinterface(ITU-TRecommendationG.957[21]);-4×STM-1opticalinterface(ITU-TRecommendationG.957[21]);-4×STM-1CMIelectricalinterface(ITU-TRecommendationG.703[16]).TheuseofreservedbytescontainedintheSOH,andtheirterminationshallbeinaccordancewithITU-RRecommendationF.750-3[4].FurtherdetailsonthepossibleuseoftheSOHbytesincludingadditionalRFCOHorRCSOHaregiveninTR101035[22].6TransmittercharacteristicsThespecifiedtransmittercharacteristicsshallbemetwiththeappropriatebasebandsignalsappliedatpointZ'offigure1.ForthePDHinterfacethisshallbeinaccordancewithITU-TRecommendationO.151[18]andforSDHinterfacesinaccordancewithITU-TRecommendationO.181[19].6.1OutputpowerThevalueofthenominaloutputpowerreferredtopointB'shallbeinoneoftherangesshownintable1notincludingtheATPC.Table1:NominalOutputpowerrangesclassA+26dBm+31dBmclassB+31dBm+36dBmclassC+36dBm+41dBmThetoleranceforthenominalvalueshallbeequalorlessthan±1dB.Themaximumnominalvalueshallbedeclaredbythemanufacturer.SIST EN 301 277 V1.1.1:2003



ETSIETSIEN301277V1.1.1(2000-02)136.2AutomaticTransmitPowercontrol(ATPC)ATPCisanoptionalfeature.EquipmentwithATPCwillbesubjecttomanufacturerdeclarationoftheATPCrangesandrelatedtolerances.Testingshallbecarriedoutwithoutputpowerlevelcorrespondingto:-ATPCsetmanuallytoafixedvalueforSystemperformance;-ATPCsetatmaximumprovidedoutputpowerforTxperformance.6.3RemoteTransmitPowerControl(RTPC)RTPCisanoptionalfeature.EquipmentwithRTPCwillbesubjecttomanufacturerdeclarationoftheRTPCrangesandrelatedtolerances.Testingshallbecarriedoutwithoutputpowerlevelcorrespondingto:-RTPCsetmanuallytothemaximumandtotheminimumvaluesforSystemperformance;-RTPCsetatmaximumprovidedoutputpowerforTxperformance;-RFspectrummaskshallbeverifiedatthreepoints(lower,medium,andupperpartofthefrequencybandenvisaged),ifapplicable.Txpowercontrolshallbesettothemaximumvalue.6.4RFspectrummasksThethreemainfactorsconsideredinrecommendingamaskareasfollows:a)controlofinterferenceintoanaloguechannelsoperatingontheadjacentchannelallocation;b)controlofinterferenceintodigitalchannelsbetweensystemsofdi
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