ITU R SF 1572:2002
ITU R SF 1572:2002 Methodology To Evaluate The Impact Of Space-to-earth Interference From The Fixed-satellite Service To The Fixed Service In Frequency Bands Where Precipitation Is The Predominant Fade Mechanism
Table of Contents
ANNEX11Introduction
1.1Definitions
2TypesofFSsystemsanalysedforsusceptibilitytoGSO
FSSinterference
2.1P-MPsystem
2.2P-Psystem
3Generalconsiderations
3.1P-MPsystems
3.2FixedP-Psystems(includingstarconfiguration)
4Assumptions
4.1Basicassumptions
4.2P-MPassumptions
4.2.1Intra-service(includingintra-system)
interference
4.2.2Omnihub
4.2.3Subscriberdistribution
4.2.4Levelground
4.2.5Subscriberantennaheights
4.2.60%blockage
4.2.7Nodiversity
4.2.8Hubheight,cellradiusandhubelevationangle
biasinP-MPsystems
4.3P-PFSassumptions
4.3.1LocationofFSreceiver
4.3.2Maximumhopdistance
4.3.3Minimum/maximumantennadiameter
4.3.4Antennaheightmodels
5Clear-skyatmosphericattenuation
5.1Geoclimaticparametersandapplicableranges
5.2Watervapourdensity,atmosphericpressureandradio
refractiveindex
5.3Discussionontheconsequenceofpropagationrelated
effects
6Systemandinterferencecalculations
6.1Requiredmargincalculations
6.1.1Intra-service(includingintra-system)and
inter-serviceinterferencedetermination
6.2Calculationofrequiredtransmitpower
6.3Receivedcarrierlevelcalculations
6.3.1Calculationofreceivedcarrierleveland
requiredmarginforP-MPFShub-to-subscriber
link(outroute)
6.3.2Calculationofreceivedcarrierleveland
requiredmarginforP-PFSlink
6.4Calculationofavailablemargin
6.5Calculationofsystemthermalnoise
6.6CalculationofinterferencefromGSOFSSdownlinks
intoreceiversofP-MPandP-PFSsystems
6.7Discussiononaccountingfortheeffectsofrainon
interferencecontributionsduringrainfadedconditions
on...
7Interpretationofresultingavailabilitystatistics
generatedbyapplicationofthemethodologyandpossible
ways...