DVB Coverage Prediction Using Game Engine Based Ray-Tracing Techniques

Abstract

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.

Heuristic UTD coefficients applied for the channel characterization in an andean scenario

“…3) Guevara's coefficients [3]: It based in [1] and the application of a physical technique in order to obey reciprocity and specification of permittivity of the building materials. This technique allows modeling the diffraction from the top and side edges of each building.…”

“…Among the most recent researches, Schettino et al [2] proposed heuristic UTD coefficients that ensuring reciprocity and providing superior performance in arbitrary source and observer locations. Guevara et al [3] used a physical technique that model the edge where diffraction occurs to obey reciprocity and adopt two types of permittivity to characterize the building materials. This paper will present the implementation of these three heuristic UTD coefficientsin a 3D ray-tracing model in order to evaluate the precision of the model with respect to measurements in a realistic scenario that has been previously validated in [4].…”

Using 3D game engines and GPU for ray launching based channel modeling in indoor

“…We used the 3D Game Engine Ray Launching techniques in combination with our indoor 3D model to derive multipath channel parameters [7,8]. The identified propagation parameters between the transmitter and the receiver are: time delay of arrival (TDoA), full polarimetric transmission matrix, direction of departure (DoD), direction of arrival (DoA), Delay Spread, among others.…”

“…In recent years, some authors have used GPU power in order to improve the computation capacity for propagation calculations and channel modeling [6]. The authors of this paper have proposed the use of Game Engines to improve computation time and to use the efficient ray tracing techniques implemented in such engines [7][8][9], which have been well tested in the games area. Game Engines combines the power of GPU with efficient ray tracing algorithms and new graphics technologies for channel estimation in current and future wireless technologies.…”

Delay spread in mmwave bands for indoor using Game Engines 3D Ray based Tools

“…These parameters are obtained with high accuracy and relatively low computational times [13] [14] [15].…”