User's Manual Part 1

Introduction
2
Definitions
Thefollowingabbreviations,industrystandardlingoandacronymsareusedinthisdocument.
BGW Basest
ationGateway,see "BaseStationGateway(BGW)"onpage 4
BIU
Basest
ationinterface.AlsoknownastheDIU.ItistheelectricalinterfacebetweentheMaster
FrameUnit(MFU)andtheoperatorradiobasestationoranothersourcefortheradiosignals,
suchasaoff‐airrepeater.See
"BaseStationInterfaceUn i t( BIU)"onpage8
BTS SeeRBS.
DAS
Adi
stributedantennasystem.Severalantennasconnectedtogetherinacoaxialnetworksothat
severalantennascanbefedasignalfromacentrallocation.
DL See“Do
wnlink”
Downlink Thesignalstha
taretransmittedfromabasestationtowardsaterminal(phone).
Fiber
Inthisdoc
umentitref erstothetelecommunicationfibersusedtotransmitmodulatedlig htas
pulsesoranalogvariationsonaglassfiber.TheBirdFiber‐DASsystemshouldusesingle‐mode
fiberalways.
Fiber‐DA
S
Age
neralnamefordistri butionsystemsusingradiofrequencyonfiber(RFonFiber)technology.
DASmeans“DistributedAntennaSystem”whichreferstothepracticeofbuilding“spreading
nets”withcoaxialcables,splittersandantennastocoverlargerstructures.
FOI Fiber‐opticin
terface.See "FiberOp ti c Interface(FOI)unit"onpage 15
FOR Fiber‐opticremoteinterface,partoftheRemoteUnitconnectingtothefiber.
GSM GlobalSyste
mforMobileCommunications
iDEN IntegratedDi
gitalEnhancedNetwork
LTE LongTe
rmEvolution
MFU
MasterFr
ameUnit.Thisisarackthatcontainsallthemodulesthatbuildsuptotheheadendin
thesystem.ThisiswheretheradiobasestationsinterfacetotheFiber‐DASsystem.Thisisalso
wherethedownlinksignalsfromthebasestationsareconvertedintolaserlightand sen
toverthe
fiber‐opticstotheRemoteUnit(RU)andthe uplinksignalsfromtheRUareconvertedtoradio
frequencysignalsandtransmittedtotheradiobasestation(RBS,BTS).
ICU InterconnectUn
it,RF splitter/combiner unit,see "InterconnectUn it(ICU)"onpa ge13
QMA Quickconnect/disconnecttypeofRFConnector.ReplacementforSMARFConnectors.SeeSMA
RBS
RadioBa
seStation.Theinfrastructureunitnormallyconnectedtotheantennasintheradio
accessnetwork(RAN)andsometimescalledjustBaseStationorBaseTransceiverStation(BTS).
RGW Remot e Ga
teway Unit,see "Re mo te Gateway(RGW) "onpage6
RU
RemoteUn
it.Thisistheunitclosesttotheantennathatconv ertsthedownlinksignalfromthe
fibertoradiofrequenciesanddistributesitovertheantennasystem.Inthereverse,theuplink
radiofrequenciesareconvertedtomodulatedlaserlightandtransmittedbacktotheMFU.
SC‐APC
Thetypeofc
onnectorusedforallBirdopticalequipment.Itisrecommendedthatallconnectors
betweentheMFUandtheRUareofthistype.SC‐APcanalsobeacceptedinpatchpanels.All
connectorsMUSTBEANGLEDtoavoidsignalreflectionsthataredetrimentaltothesignalquality.
Fib
ersneedtobeofsingle‐modetype.
Singlemode
fi
ber
Afiberwherethelightataspecifiedrangeofwavelengthsonlyhaveasinglepaththrough.Thisis
requiredforanaloguemodulated systemssuchastheBirdFiber‐DASsystem
SMA Sub‐minia
tureversionA.ATypeofRFConnector.
Switch
Ane
tworkswitchisacomputernetworkingdevicethatconnectsdevicestogetheronacomputer
network.