**Acknowledgements**

This research has been supported by the project "An ICT platform for sustainable energy ecosystem in smart cities" (ELAC2015/T10-0643) and Red CYTED Ciudades Inteligentes Totalmente Integrables Eficientes y Sostenibles (CITIES-2018).

Thanks to the Programa de Investigación en Radiocomunicación Digital PIRD – Universidad Tecnológica Metropolitana, our alma mater, and our loved ones, for all the support provided during this research.
