Desarrollo de un simulador de propagación 3D indoor en frecuencias de 10-20 GHZ sobre GPU con NVIDIA-OPTIX bajo el motor gráfico unity para la FIE.

Abstract

The main objective of this work was the development of an indoor 3D propagation simulator at frequencies of 10-20 GHz on a graphics processing unit (GPU). The research methodology used was the Deming cycle through its four stages: plan, do, verify and act. In order to carry out the simulation, various software tools with specific versions were used, such as Nvidia CUDA 10.0, CMake 3.19.4, Nvidia OPTlX 6.5, Microsoft Visual Studio enterprise 2017 and Unity 2018.4.2 fl. Two scenarios with line of sight (LOS) were defined within the Faculty of Informatics and Electronics (FIE) of Escuela Superior Politécnica de Chimborazo (ESPOCH), the first in the Microwave Laboratory where the minimum and maximum distances between transmission (Tx) and reception (Rx) antennas is 0.34m (far field) and 7m; and the second stage is located in the corridor on the ground floor of the FIE building with minimum and maximum distances of 6 and 12m respectively. In these scenarios, both real and simulated measurements were made, with frequency jumps of 1 GHz. When comparing the simulated received power measurements that are based on the Ray Tracing and Rivera-Zambrano propagation models, it was observed that there is a variation that ranges between 10 dBm in scenario 1 (Microwave Laboratory) and between 12 dBm in scenario 2 (FIE ground floor). It is concluded that the Rivera-Zambrano model is more adjusted to the real power values obtained in both scenarios. It is recommended to take into consideration the limitations that Nvidia OPTIX presents in terms of Hardware compatibility, since it limits development on computers with devices from different manufacturers.