Link Budget Online Simulator
Transmit Power (dBm):
Frequency (GHz):
Distance (km):
1.0 km
Received Signal Strength (RSRP)
-95.0 dBm
Signal: Good
Example Calculation (GHz Version)
f = 3.5 GHz, d = 1 km
FSPL(dB) = 20 log₁₀(1) + 20 log₁₀(3.5) + 92.45
= 0 + 10.88 + 92.45
= 103.33 dB
The constant 92.45 is used when:
- Distance is in kilometers (km)
- Frequency is in gigahertz (GHz)
It comes from converting the standard FSPL equation into GHz units.
32.44 + 20 log₁₀(1000)
= 32.44 + 60
= 92.44 ≈ 92.45
Since:
- 1 GHz = 1000 MHz
- 20 log₁₀(1000) = 60 dB
the constant increases from 32.44 to 92.45.