Cost 231 Model

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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.

Contents

[edit] Applicable To / Under Conditions

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

suggestion: The formula shown below is only applicable to the evaluation of Path Loss in Urban Areas. To further evaluate Path Loss in Suburban or Rural Quasi-open/Open Areas, this path loss has to be substituted into Urban to Rural/Urban to Suburban Conversions. (Ray GAO, 09 Sep 2007)

[edit] Coverage

Frequency: 1500 MHz to 2000 MHz

Mobile Station Antenna Height: up to 10m

Base station Antenna Height: 30m to 100m

Link Distance: up to 20 km

[edit] Mathematical Formulation

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,

L = Median path loss. Unit: Decibel (dB)

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

hB = Base Station Antenna effective height. Unit: Meter (m)

d = Link distance. Unit: Kilometer (km)

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

[edit] Points to Note

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

[edit] Limitations

This model requires that the base station antenna is higher than all adjacent rooftops.

[edit] See also