Fading Analysis of Vegetation Density Effects on Path Loss for 1.8 GHz Cellular Mobile with Low Base Station Antenna Height

S. Phaiboon, K. Pitithammawong, T. Chulajata, and S. Somkuarnpanit (Thailand)


fading, low base station, tree densities.


: This paper presents studies of propagation characteristics in a suburban forest based on a measurement campaign at a frequency of 1.8 GHz. We investigated how tree density affected the fast fading characteristic depending on tree density and base station antenna height in a range of 3, 4, and 5 m above ground while the receiving antenna height was fixed at 1.8 m above ground. Three categories were studied: high density area, low density areas and grass area. Measurement of the receiver signal over 120 s intervals for a stationary mobile were used to obtain the distribution functions for the fading. We found that the distributions followed a Rician distribution, whose K-factor depended on tree density and transmitter height.

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