**Mathematical Formulation**

The Okumura model is formally expressed as:

where,

L = The median path loss. Unit: Decibel (dB)

L_{FSL} = The Free Space Loss. Unit: Decibel (dB)

A_{MU} = Median attenuation. Unit: Decibel (dB)

H_{MG} = Mobile station antenna height gain factor.

H_{BG} = Base station antenna height gain factor.

K_{correction} = Correction factor gain (such as type of environment, water surfaces, isolated obstacle etc.)

Read more about this topic: Okumura Model

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