Disponibilidad Espacial Del Espectro Dentro De Zonas Urbanas Densas

Abstract

The growing demand for services with short-range wireless operating in sharing bands (e.g. ISM), especially in dense urban areas, there is concern of future collapses in that segment of the radio spectrum due to increased interference levels. In this context, technologies with opportunistic spectrum access (OSA) capabilities could provide a good alternative to decongest the ISM bands. In particular allowing devices working in ISM bands opportunistically access to other bands so licensed to other systems (e.g. TV) without causing interference to legitimate users. For the above, this article proposes to quantify the spatial availability of licensed spectrum in areas inside buildings, so that short-range systems can function as secondary users in licensed bands. For this study various semi-empirical propagation models that allow do a thorough analysis approach have been used.