Cost 231 Model

COST 231 Model, also called the Hata Model PCS Extension, is a radio propagation model that extends the Hata Model and Okumura Model to cover a more elaborated range of frequencies.

[edit] Applicable To / Under Conditions

This model is applicable to Open, Suburban and Urban Areas.

Frequency: 1500 MHz to 2000 MHz

Base station Antenna Height: 30m to 100m

Link Distance: up to 20 km

The COST 231 model is formulated as,

$L \; = \; 46.3 \; + \; 33.9\log f \; - \; 13.82 \log h_B \; - \; C_H \; + \; [44.9 \;- \;6.55 \log h_B] \log d \; + \; C$

$C \; = \; \begin{cases} 0 \; dB \mbox{ for medium cities and suburban areas} \\ 3 \; dB \mbox{ for metropolitan areas} \end{cases}$

Where,

f = Frequency of Transmission. Unit: Megahertz (MHz)

h_B = Base Station Antenna Effective Height. Unit: Meter (m)

d = Link distance. Unit: Kilometer (km)

C_H = Mobile station Antenna height correction factor as described in the Hata Model for Urban Areas.

This model is suitable for using in the same scenarios for Hata and Okumura Models.

This model requires that the base station antenna is in more height than all adjacent rooftops.