Simulador de propagación 3D para Interiores Utilizando Trazado de Rayos para la Banda de Frecuencia de 10-20 GHz sobre GPU con NVIDIA-Optix bajo el motor gráfico Unity.

Abstract

In this research work, a novel Ray Tracing 3D indoor propagation simulator at frequencies of 10-20 GHz using GPU is presented. To carry out the simulation, software tools as Nvidia CUDA 10.0, CMake 3.19.4, Nvidia OPTIX 6.5, Microsoft Visual Studio Community 2017 and Unity 2018.4.21f1 were used. Two indoor line-of-sight (LOS) scenarios were defined in Facultad de Informatica y Electrónica at Escuela Superior Politécnica de Chimborazo (ESPOCH). The first one inside the Microwave Laboratory with minimum and maximum distances between Transmitter and Receiver of 0.34m (far field) and 7m, respectively; and the second one inside the ground floor hall with minimum and maximum distances of 6 and 12m, respectively. In both scenarios, real and simulated measurements were developed with frequency hops of 1GHz. A ray tracing propagation technique under GPU with NVIDIA-Optix was used for the simulation and by comparing simulated and measurement power, it was observed a difference of 10 dB approximately.