This paper presents the results of an evaluation of a propagation model based on ray-tracing techniques using a game engine and Graphics Processing Unit (GPU) in outdoor scenarios, as a gap-filler for a Digital Video Broadcasting Handheld (DVB-H) service. This model involves complete identification of the parameters of wave propagation, multipath components between the transmitter and the receiver as attenuation, time delay of arrival (TDA), full polarimetric transmission matrix, direction of arrival DoA and the direction of departure DoD. In the paper, we present the results of the simulation and compare them with measurements, obtaining a satisfactory fit.Index Terms-game engine, ray tracing, digital video broadcasting, wave propagation.
In this study, we demonstrate the implementation of an algorithm to model 3D-ray launching. A fixed-size reception sphere and cylinder is used in conjunction with numerical methods to simulate the multipath propagation in a reduced computational time while retaining accuracy. This approach was implemented in a two office environments that were validated previously by the authors in different simulations. The mathematical feasibility of this method in these applications is demonstrated and the obtained results are discussed. The proposed method has been previously validated by authors in different simulations shown in references.
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