Mobile Outdoor Radio Propagation Model Hata Model (150~1500 MHz) Hata, Masaharu,”Empirical formula for propagation loss in land mobile radio services” IEEE tran. on Veh. Tec Vol. VT-29, No.3 , pp.317-325, August, 1980.
Empirical path loss formula: (the model is well suited for large mobile systems)
L(dB)=69.55+26.16 Log(F)-13.82 Log(H1) -a (H2)+(44.9-6.55 Log(H)) Log(D)-C
F= Frequency in Mhz (150~1500 MHz)
D=Distance between base station and terminal in km (1~20 km)
H1=Effective height of base station antenna in m (30~200 m)
H2=Effective height of mobile station antenna in m (1~10 m)
a (H2)=the correction factor for effective mobile antenna which is function of the size of the coverage area
C=Environment correction factor
= 0 dB for dense urban environment (buildings greater than 7 floors, medium and small streets)
= 3 dB for medium urban environment (medium buildings of 5 floors, medium and small streets)
= 6 dB for medium urban environment and wide streets
= 10 dB for suburban environment with small buildings
= 20 dB for mixed rural and villages
= 23 dB for rural with a few trees and quasi no hills