Title :
A Reduced Markov Channel Modelling of Vegetation in the Forward Scattering Region at 40 GHz
Author :
Morgadinho, S. ; Caldeirinha, Rafael F. S. ; Cuinas, Inigo ; Sanchez, Miriam
Author_Institution :
Inst. de Telecomun., Polytech. Inst. of Leiria, Leiria
Abstract :
Modelling of radio signals at millimetre wave frequencies in vegetation media subject to the influence of wind may be a challenging problem. More so, modelling of radio signals as a function of the receiver bi-scattering angle with reference to the vegetation volume may represent a rather complex task, due to the large number of model input parameters which are required. This paper proposes a channel model of vegetation dynamics, based on a simplified set of parameters, representative of the radio signal in the forward scattering region of a vegetation volume at 40 GHz. As a result, a novel Markov modelling methodology is presented in order to model effectively radio signals which are highly time variant, such as a received radio signal in a dynamic environment. Model assessment is presented for relatively high wind speeds. The proposed model is a valuable simulating tool for obtaining channel dynamic data for vegetation scenarios covering a receiver scattering angle range, obviating the need to perform expensive measurements.
Keywords :
Markov processes; electromagnetic wave scattering; millimetre wave propagation; vegetation mapping; wireless channels; Markov channel modelling; channel model; forward scattering region; frequency 40 GHz; millimetre wave frequency; radio signal; receiver biscattering angle; vegetation dynamics; Markov model; channel dynamics; isolated trees; vegetation; wind speed effects;
Conference_Titel :
Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-0-86341-842-6