Optimization of Recommendation ITU-R P.1812-3 for the Propagation Losses Prediction in Digital Terrestrial Television System

Abstract

This work was developed for the propagation characteristics of outdoor environments in the cities of Quito-Ecuador and Caracas-Venezuela, using one of the most innovating propagation models used in the planning and dimensioning (PyD) of Digital Terrestrial Television (DTT), specifically Recommendation ITU-R P.1812-3. For this, measurements of the received electric field level (Quito) and power level received (Caracas) made for conditions of fixed reception, with DTT standards, were used during the processes followed in both countries for the selection of the DTT standard base. For the development of four versions, the Particle Swarm Optimization (PSO) and genetic algorithm (GA) techniques were applied individually to the measurements mentioned above, which were part of the intelligence computational techniques family. The performance of these versions, in terms of RMSE (Root Mean Square Error), in the prediction of propagation losses in the environments where the measurements were carried out, were compared with the performance of the unmodified version of the recommendation ITU-R P.1812-3, resulting all versions of the developed model here with better performance.