P. Martins

We adopt two types of simplicial complexes called $\check{\textrm{C}}$ech complex and Rips complex to capture coverage holes and classify coverage holes to be triangular and non-triangular. Expand

This work proposes a new radio resource allocation scheme for the green uplink Long-Term Evolution (LTE) networks, respecting the SCFDMA constraints. Expand

The cognitive cooperative system with coexisting scenario of multiple primary users and one secondary capable of relaying is considered in this study. Expand

This paper analyzes a TCP connection over UMTS radio access bearer in RLC acknowledged mode and shows that an insufficient buffer size degrades the TCP performance. Expand

Homology theory provides new and powerful solutions to address the coverage problems in wireless sensor networks (WSNs). Expand

We consider stochastic cellular networks where base stations locations form a homogeneous Poisson point process and each mobile is attached to the base station that provides the best mean signal power. Expand

In this paper, we propose to evaluate the gain of multiple resource block (RB) allocation to user equipments (UEs) on the LTE uplink. Expand

In this paper, we aim at reducing power consumption in wireless sensor networks by turning off supernumerary sensors. Expand

We propose a novel common interworking sublayer (IW sublayer) at layer 2 on RNC and UE to provide a seamless PS inter-RAT handover between UMTS and WiMAX systems. Expand

In this paper, the rate adaptive optimization (RA) problem, which maximizes the sum of user data rates subject to total power constraint and individual guaranteed rates, is considered. Expand