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Ítem Prediction of Delay Spread Using Ray Tracing and Game Engine Based on Measurement(Institute of Electrical and Electronics Engineers Inc., 2015-05-11) Gomez, JorgeIn this paper, we show results of channel delay spread estimation using a 3D ray launching tool based on Game Engines and GPU, comparing simulation results with channel measurements of a MIMO system taken in Ilmenau. We show that the accuracy of the simulation is strongly affected by the ray angular separation in the first and second diffraction, obtaining a good fit between measurements and simulation.Ítem Indoor Propagation Using a Game Engine Ray-Based Model in Indoor Scenario at 5.4GHz(Institute of Electrical and Electronics Engineers Inc., 2016-05-15) Gimenez, Jordi JoanThe results of a simulation of signal propagation strength in indoor environment using a game engine ray-based tool and use of an open source 3D modeling tool for scenario building are presented in this paper, showing the flexibility of the XML description language for this kind of scenario. We show simulation results and compare them with an extensive set of measurements for an indoor scenario with multiple materials in the 5.4GHz band, obtaining a good match between the ray-based tool and measurements of received power. We found also that constitutive parameters have an important effect on the simulation results and made some small adjustments to improve results.