Radwin 2000+ SERIES, User Manual

Page: 223 / 276

RADWIN 2000+ Series User Manual Release 4.2.40 19 ‐ 2
Link Budget Calculator Internal Data
19.2.2 Link Budget Calculator Internal Data
For each product (or Regulation and Band) the calculator stores the following data required
for link budget calculations:
• Maximum Transmit power (per modulation)
• Receiver Sensitivity (per modulation) for Ethernet service
• Maximum linear input power (used to calculate minimum distance)
• Antenna gain and cable loss for radio unit with integrated antenna
• Available Channel Bandwidths
19.3 Calculations
19.3.1 EIRP
( E quivalent I sotropically R adiated P ower)
19.3.2 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.
19.3.3 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 will be the actual behavior.
MaxRange (for a given air ‐ rate) is the largest range for which
.
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 in
arg
ExpectedRSS Sensitivity
– =
ExpectedRSS MaxInputPower

ExpectedRSS Sensitivity

ExpectedRSS Sensitivity RequiredFadeM in
arg +
