Abstract
This paper presents results of an extensive measurement campaign to characterise and model the wind incident effects on the channel dynamics in vegetation media at 40 GHz. Several experiments were conducted in an anechoic chamber on indoor plants (downscaled trees) for co-polarised radio signals at 40 GHz. Narrowband fast fading channel performance is evaluated and results are presented for various scatter regions around isolated trees when exposed to varying wind incidences and speeds. In addition, a propagation channel simulator is proposed as a means of simulating the time-variant vegetation effects. This includes varying incident wind directions, scattering angles and vegetation species, yielding statistical estimates, which are in relatively good agreement with measurement data. The proposed simulator provides a flexible tool for obtaining predictive data for specific vegetation scenarios, obviating the need to perform expensive measurements.
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