Spectrum frequency is a valuable resource for wireless communication but very limited in its
availability. Due to the extensive use and ever increasing demand of spectrum bands by …

The radio-frequency spectrum shortage, which is primarily caused by the fixed allocation
policy, is one of the main bottlenecks to the deployment of existing wireless communication …

Dynamic spectrum access (DSA) has been hailed as a possible panacea for the “spectrum
crunch,” drawing significant attention from researchers and industry alike. Here, we describe …

For the further performance improvement of Cognitive Radio systems, providing accurate or
comprehensive information support to Cognitive Radio devices or networks, there is a use of …

Spectrum Sharing (SS) is gradually turning into the de facto method that can be adopted to
address the growing radio frequency (RF) spectrum demand across the world. This is due to …

Fog computing represents a generalization of traditional cloud computing, in which
application functionality resides at a local device and a remote cloud server. This chapter …

2 Métodos, Padroes e Regulamentaçoes Existentes para DSA 7 2.1 Base de Dados de
Espaço em Branco (WSDB)............. 8 2.2 SensoriamentoEspectral........................ 11 2.3 …

Abstract Dynamic Spectrum Access (DSA) has been introduced to fulfill the expanded need
for spectrum by different wireless networks and applications. Within the realm of spectrum …