Este artículo presenta una revisión del estado del arte de la gestión del espectro
radioeléctrico. Se definen conceptos básicos que permiten reconocer su alcance e …

Spectrum became the dear resource due to sudden growth in wireless trade. The static
frequency allocation strategies cause spectrum underutilization. To enhance spectrum …

In this paper, we investigate power allocation in cognitive sensor networks, where cognitive
users (cognitive enabled sensor nodes) opportunistically share the common spectrum with …

El espectro radioeléctrico es un recurso limitado, que prácticamente está asignado a los
proveedores de servicios inalámbricos, es decir, se encuentra sólo disponible para usuarios …

The scarcity of spectrum is increasing day by day due to the spectrum scarcity faced by the
wireless based service providers led to high congestion levels. The main reason that leads …

As the customers in wireless communication becoming crowdy and it becomes an important
to tackle the spectrum scarcity problem. Most of TV licensed spectrum band, users only …

With the rapid development of urban rail transit, the demand of the public in rail
transportationto take real-time, reliable and efficient wireless access services, has become …

Abstract Intelligent Transport Systems (ITS) aim to improve transport safety, productivity and
reliability by interconnecting different transport entities and providing real-time …

Cognitive radio (CR) technology is used in wireless networks with the aim of handling the
wireless spectrum scarcity. On the other hand, using CR in wireless networks has some new …

For the realization of green communications in cognitive radio ad hoc networks (CRAHNs),
self-adaptive and efficient power allocation for secondary users (SUs) is essential. With the …