Radwin 2000 - Calculations

RADWIN2000UserManual Release2.8.30 27‐2
Calculations
• Maximumlinearinputpower(usedtocalculateminimumdistance)
• Ante nnagainandcablelossforODUwithintegratedantenna
• AvailableChannelBandwidths
Calculations
EIRP
ExpectedRSSandFadeMargin
where:
SiteAisthetransmittingsite
SiteBisthereceivingsite
PathLossiscalculatedaccordingtothefreespacemodel,
whereSensitivityisdependentonair‐rate.
MinandMaxRange
MinRangeistheshortestrangeforwhich perair‐rate.
MaxRange(withAdaptivechecked)isthelargestrangeforwhich
,atthehighestair‐rateforwhichthisrelationshipistrue.Ina
linkwithadaptiveratethiswi ll betheactualbehavior.
MaxRange(foragivenair‐rate)isthelargestrangeforwhich
.
Service
TheEthernetandconfiguredTDMtrunksthroughputiscalculatedaccordingtointernal
productalgorithms.
EIRP TxPower AntennaGain
SiteA
CableLoss
SiteA
–+=
ExpectedRSS EIRP PathLoss AntennaGain
SiteB
CableLoss
SiteB
–+–=
PathLoss 32.45 20 frequency
MHz
20 RequiredRange
Km

10
log+
10
log+=
ExpectedFadeM inarg ExpectedRSS Sensitivity–=
ExpectedRSS MaxInputPower
ExpectedRSS Sensitivity
ExpectedRSS Sensitivity RequiredFadeM inarg+