Built as two different modes, this model includes an adjustment factor that can be adjusted to make the model more flexible to different regions of propagation.
[1] This model is suitable for using in data collected in a specific area for point-to-point links.
Frequency: 900 MHz band The Lee model for point to point mode is formally expressed as:
L0 = The reference path loss along 1 km.
= The slope of the path loss curve.
FA = Adjustment factor HET = Effective height of terrain.
The reference path loss is usually computed along a 1 km or 1 mi link.
Any other suitable length of path can be chosen based on the applications.
where, GB = Base station antenna gain.
Unit: decibel with respect to isotropic antenna (dBi).
GM = Mobile station antenna gain.
Unit: decibel with respect to isotropic antenna (dBi).
{\displaystyle F_{A}=F_{BH}F_{BG}F_{MH}F_{MG}F_{F}}
where, FBH = Base station antenna height correction factor FBG = Base station antenna gain correction factor FMH = Mobile station antenna height correction factor FMG = Mobile station antenna gain correction factor FF = Frequency correction factor
where, hB = Base station antenna height.
where, GB = Base station antenna gain.
Unit: decibel with respect to half-wave dipole (dBd).
where, hM = Mobile station antenna height.
where, GM = Mobile station antenna gain.
Unit: decibel with respect to half wave dipole antenna (dBd).