Cobertura ràdio dins de les cabines dels vehicles en funció de la banda de freqüències

Abstract

The objective of this TFG is to analyse the wireless coverage of the inside of vehicles using an iterative spectral technique based on the frequency band. It is intended to make a first approach between vehicles or through vehicle-infrastructure of the antennas that can be incorporated into V2X systems. For that reason, we have introduced different vehicle models so that we can analyse each of them. Using the incremental propagation technique, we will see how electromagnetic waves affect and how the signal propagates when there is an obstacle in the middle, then introduce the technique inside a vehicle. The signal will be emitted by a source that we will introduce inside the vehicle, that will be unidirectional or bidirectional. The analysis of the coverage inside the different vehicles models will be performed according to four frequency ranges: 2 GHz, 3.6 GHz, 5.9 GHz and 24 GHz. The tool with which the simulations will be performed is the Matlab software "In cabin Wireless coverage" and will be used to see more visually how the rays radiated by the antenna affect in terms of wireless coverage inside vehicles. These simulations will be performed in an approximate environment, as we will work with a flat image when in real life it should be volumetric. Finally, after analysing all the coverage of each of the frequencies, some conclusions will be drawn and we will use them to explain in which case it will be better to work in a range of frequencies to achieve cover as much as possible the entire interior of the vehicle to be able to meet the needs of passengers and thus monitor the entire interior of the cabin.