Calculations - Radwin 5000 HPMP User Manual

Calculations

• Maximum linear input power (used to calculate minimum distance)
• Antenna gain and cable loss for ODU with integrated antenna
• Available Channel Bandwidths
Calculations
EIRP
= +
EIRP TxPower AntennaGain
Expected RSS and Fade Margin
=
ExpectedRSS EIRP PathLoss
where:
Site A is the transmitting site
Site B is the receiving site
PathLoss is calculated according to the free space model,
= 32.45 + 20
PathLoss
arg
ExpectedFadeM in
where Sensitivity is dependent on air‐rate.
Min and Max Range
MinRange is the shortest range for which
MaxRange (with Adaptive checked) is the largest range for which

ExpectedRSS Sensitivity
link with adaptive rate this will be the actual behavior.
MaxRange (for a given air‐rate) is the largest range for which

ExpectedRSS Sensitivity
Service
The Ethernet and configured TDM trunks throughput is calculated according to internal
product algorithms.
Availability
The Service Availability calculation is based on the Vigants Barnett method which predicts the
downtime probability based on a climate factor (C factor).
RADWIN 5000 HPMP User Manual
–
CableLoss
SiteA
– +
AntennaGain
 
log
frequency
MHz
10
= –
ExpectedRSS Sensitivity
ExpectedRSS
, at the highest air‐rate for which this relationship is true. In a
+
RequiredFadeM
Release 3.5.70
SiteA
–
CableLoss
SiteB SiteB
  
+ 20 log
RequiredRange
10

MaxInputPower
arg
in .

Km
per air‐rate.
23‐2