Enviaments recents

  • A service-constrained positioning strategy for an autonomous fleet of airborne base stations 

    José Torra, Ferran; Pascual Iserte, Antonio; Vidal Manzano, José (Multidisciplinary Digital Publishing Institute (MDPI), 2018-10)
    Article
    Accés obert
    This paper proposes a positioning strategy for a fleet of unmanned aerial vehicles (UAVs) airlifting wireless base stations driven by communication constraints. First, two schedulers that model the distribution of resources ...
  • Improved characterization and modeling of equatorial plasma depletions 

    Blanch Llosa, Estefania; Altadill, David; Juan Zornoza, José Miguel; Camps Carmona, Adriano José; Barbosa, José; González Casado, Guillermo; Riba Sagarra, Jaume; Sanz Subirana, Jaume; Vázquez Grau, Gregorio; Orús Pérez, Raul (2018-08-22)
    Article
    Accés obert
    This manuscript presents a method to identify the occurrence of Equatorial Plasma Bubbles (EPBs) with data gathered from receivers of Global Navigation Satellite System (GNSS). This method adapts a previously existing ...
  • Blind multiclass ensemble classification 

    Traganitis, Panagiotis; Pagès Zamora, Alba Maria; Giannakis, Georgios B. (2018)
    Article
    Accés obert
    The rising interest in pattern recognition and data analytics has spurred the development of innovative machine learning algorithms and tools. However, as each algorithm has its strengths and limitations, one is motivated ...
  • Strong secrecy on a class of degraded broadcast channels using polar codes 

    Olmo Alòs, Jaume del; Rodríguez Fonollosa, Javier (2018-06-15)
    Article
    Accés obert
    Asymptotic secrecy-capacity achieving polar coding schemes are proposed for the memoryless degraded broadcast channel under different reliability and secrecy requirements: layered decoding or layered secrecy. In these ...
  • Multiantenna GLR detection of rank-one signals with known power spectrum in white noise with unknown spatial correlation 

    Sala Álvarez, José; Vázquez Vilar, Gonzalo; López Valcarce, Roberto (2012-06)
    Article
    Accés restringit per política de l'editorial
    Multiple-antenna detection of a Gaussian signal with spatial rank one in temporally white Gaussian noise with arbitrary and unknown spatial covariance is considered. This is motivated by spectrum sensing problems in the ...
  • Cramer-Rao bounds in the estimation of time of arrival in fading channels 

    René Jativa, E.; Vidal Manzano, José (2018-03-16)
    Article
    Accés obert
    This paper computes the Cramer-Rao bounds for the time of arrival estimation in a multipath Rice and Rayleigh fading scenario, conditioned to the previous estimation of a set of propagation channels, since these channel ...
  • Feasibility of precise navigation in high and low latitude regions under scintillation conditions 

    Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Rovira Garcia, Adrià; Camps Carmona, Adriano José; Riba Sagarra, Jaume; Barbosa, José; Blanch Llosa, Estefania; Altadill, David; Orús Pérez, Raul (2018-02-06)
    Article
    Accés obert
    Scintillation is one of the most challenging problems in Global Navigation Satellite Systems (GNSS) navigation. This phenomenon appears when the radio signal passes through ionospheric irregularities. These irregularities ...
  • Performance analysis of feedback-free collision resolution NDMA protocol 

    Lagen, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José; García Mateos, Jorge (2018-12-01)
    Article
    Accés obert
    To support communications of a large number of deployed devices while guaranteeing limited signaling load, low energy consumption, and high reliability, future cellular systems require efficient random access protocols. ...
  • Energy efficiency in latency-constrained application offloading from mobile clients to multiple virtual machines 

    Lagén Morancho, Sandra; Pascual Iserte, Antonio; Muñoz Medina, Olga; Vidal Manzano, José (2017-11-28)
    Article
    Accés obert
    This paper addresses the energy-latency trade-off in distributed application offloading, in which an energy-limited handset offloads totally or partially an application to one or several virtual machines (VMs) located in ...
  • Network dimensioning and base station on/off switching strategies for sustainable deployments in remote areas 

    Rubio López, Javier; Olmo Alòs, Jaume del; Pascual Iserte, Antonio; Vidal Manzano, José; Muñoz Medina, Olga; Agustín de Dios, Adrián (2017-12)
    Article
    Accés obert
    This paper provides a methodology for the dimensioning of the access network in remote rural areas, considering the progressive introduction of cellular services in these regions. A 3G small cell (SC) network with one or ...
  • Parameter estimation in wireless sensor networks with faulty transducers: a distributed EM approach 

    Silva Pereira, Silvana; López Valcarce, Roberto; Pagès Zamora, Alba Maria (2018-03-01)
    Article
    Accés obert
    We address the problem of distributed estimation of a vector-valued parameter performed by a wireless sensor network in the presence of noisy observations which may be unreliable due to faulty transducers. The proposed ...
  • User association strategies in HetNets leading to rate balancing under energy constraints 

    Rubio López, Javier; Pascual Iserte, Antonio; Olmo Alòs, Jaume del; Vidal Manzano, José (2017-12)
    Article
    Accés obert
    This paper deals with the development of several strategies for associating users to base stations (BSs) in heterogeneous networks. These strategies are able to balance the rate among users and BSs and increase the overall ...

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