Antoni Morell

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Recommended by Alagan Anpalagan We analyze the existing trade-offs in terms of system performance versus fairness of a cooperative system based on opportunistic relay selection (ORS) and with outdated channel state information (CSI). In particular, system performance is analytically evaluated in terms of outage probability, and the fairness behavior is(More)
—In this paper, we consider a cooperative system based on relay selection in a scenario where the available channel state information (CSI) is subject to delays. In order to exploit the selection diversity gains of the system while providing robustness against CSI inaccuracy, we propose a robust relay selection strategy based on a minimum mean square error(More)
An open issue still to be addressed in low-power lossy networks (LLNs) is how the application requirements, the available transport services, the network layer routes, and the data link-layer resources are mapped efficiently. This can be explained by the fact that, in most LLNs, link-layer resources cannot be easily managed; this results in a best effort IP(More)
— This paper presents a general framework and the corresponding solution for the problem of fair resource allocation among entities with absolute and relative QoS requirements. It is described how the framework can be applied to a variety of scenarios, in particular to the scheduling of the TDM transmission in DVB-S2 and to the dynamic bandwidth allocation(More)
—In this paper, a novel cross-layer framework for optimizing the dynamic bandwidth allocation (DBA) of a digital video broadcast (DVB)-return channel satellite (RCS) system using adaptive coding is proposed. The design of the medium access control (MAC) methods taking into account the adaptive physical layer and higher layers' quality of service (QoS)(More)
—Results in distributed compressed sensing show that this technique can be applied to wireless sensor networks in order to reduce the power consumption and the amount of channel uses. In this paper we extend such results with the study of the physical layer secrecy performance. In particular, we focus on an amplify-and-forward compressed sensing scheme(More)
The problem of Dynamic Bandwidth Allocation (DBA) is inherent to systems that employ Bandwidth on Demand (BoD). An important issue in such systems is to be able to react efficiently to the always-changing traffic requests of users. Moreover , it is realistic to assume large populations sharing system resources and thus efficient methods to distribute(More)