Extended Hata Model
The Okumura-Hata model was extended to the frequency bands from 30 MHz to 3000
MHz1. This combination is denoted as the Extended Hata
model
.
Activate the extended Hata model on the Parameters of Okumura Hata dialog, under Frequency, select the Use extended Hata model (covers the frequency range 30 MHz - 3 GHz) check box (see Figure 2).
Urban
30 MHz < f ≤ 150 MHz:
150 MHz < f ≤ 1500 MHz:
1500 MHz < f ≤ 2000 MHz:
2000 MHz < f ≤ 3000 MHz:
Suburban
Open Area
Where,
The exponent
is a distance correction factor for distances > 20
km, defined as follows:
- L = path loss (dB)
- f = frequency (MHz)
- Hb = transmitter antenna height above ground (m)
- Hm = receiver antenna height above ground (m)
- d = distance between transmitter and receiver (km)
- a(Hm), b(Hb) = antenna height correction factors, defined as follows:
with the following model restrictions:
- f: 30MHz to 3000 MHz
- Hb: 30m to 200 m
- Hm: 1 m to 10 m
- d: 0.1 km to 100 km, but in practice, it is recommended to use it up to 40 km.
1 Report ITU-R SM.2028-2
Monte Carlo simulation methodology for the use in sharing and compatibility studies between different radio services or systems, section 6.1, published June 2017.