This paper investigates the joint subcarrier and power allocation problem for the downlink of
a multi-carrier non-orthogonal multiple access (MC-NOMA) system. A novel three-step …

In this paper, we propose a fair and dynamic auction-based QoS negotiation scheme that
allows users to dynamically negotiate their agreed service levels with their service provider …

El Acceso Oportunista al Espectro es un conjunto de alternativas que buscan minimizar los
problemas de escasez e ineficiencia en el uso del espectro radioeléctrico ocasionados por …

Non-orthogonal multiple access (NOMA) is a promising technology to increase the spectral
efficiency and enable massive connectivity in future wireless networks. In contrast to …

This paper considers the problem of opportunistic multicast scheduling in wireless time-
division multiplexing systems with adaptive modulation and channel coding. The problem is …

The consequence of simultaneous transmissions by nodes in inter-working multi-hop
wireless networks is inter-node interference. Inter-node interference is a metric that is …

Opportunistic Spectrum Access has recently emerged as a set of approaches that seek to
minimize the problems of scarcity and inefficient use of radio spectrum caused by its current …

This thesis studies pricing, service competition and resource allocation in heterogeneous
wireless networks. In particular, we focus on two different resources, power and spectrum …

Establishing connectivity between node pairs in inter-working multi-hop wireless networks is
a challenge. Although connectivity in multi-hop wireless networks has been studied yet …

This paper develops a multiple channel assignment model, which allows to take advantage
of spectrum opportunities in cognitive radio networks in the most efficient way. The …