Now showing items 1-20 of 648

  • 5G Infrastructures supporting end-user and operational services: the 5G-XHaul architectural perspective 

    Tzanakaki, Anna; Simeonidou, Dimitra; Berberana, Ignacio; Syrivelis, Dimitris; Camps Mur, Daniel; Seyfettin Demirkol, Ilker; Gutiérrez, Jesús; Wei, Qing; Fehske, Albrecht; Eiselt, Michael; Bartelt, Jens; Lyberopoulos, George; Grass, Eckhard; Anastasopoulos, Markos; Korakis, Thanasis; Flegkas, Paris; Pateromichelakis, Emmanouil; Grieger, Michael; Theodoropoulou, Eleni (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Open Access
    We propose an optical-wireless 5G infrastructure offering converged fronthauling/backhauling functions to support both operational and end-user cloud services. A layered architectural structure required to efficiently ...
  • 5G microwave vs. millimeter-wave MIMO wireless mobile systems 

    Ballesteros Sánchez, Christian (Universitat Politècnica de Catalunya, 2018-07)
    Master thesis
    Open Access
    The next generation of wireless systems, 5G, is intended to cover plenty of new emerging applications such as utra-high resolution multimedia systems, industry 4.0, self-driving vehicles and smart cities. All those different ...
  • A centrality-based topology control protocol for wireless mesh networks 

    Vázquez Rodas, Andrés; Cruz Llopis, Luis Javier de la (Elsevier, 2015-01-01)
    Article
    Open Access
    Nodes in wireless multi-hop networks establish links with their neighbors, which are used for data transmission. In general, in this kind of networks every node has the possibility of acting as a router, forwarding the ...
  • Achievable data rate of coordinated multi-point transmission for visible light communications 

    Dowhuszko, Alexis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users canachieve when phosphor-converted white LED panels are usedto provide illumination and communication simultaneously. ...
  • A comparison study of two fuzzy-based handover systems for avoiding ping-pong effect in Wireless Cellular Networks 

    Mino, Gjergji; Barolli, Leonard; Durresi, Arjan; Xhafa Xhafa, Fatos; Koyama, Akio (Institute of Electrical and Electronics Engineers (IEEE), 2009)
    Conference report
    Open Access
    Wireless mobile networks and devices are becoming increasingly popular to provide users the access anytime and anywhere. The mobile systems are based on cellular approach and the area is covered by cells that overlap each ...
  • A comprehensive method to taxonomize mechanical energy harvesting technologies 

    Diez, P.L.; Gabilondo, I.; Alarcón Cot, Eduardo José; Moll Echeto, Francisco de Borja (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Traditional industry is experiencing a worldwide development with Industry 4.0. Wireless sensor networks (WSNs) have a main role in this revolution as an essential part of data acquisition. The way in which WSNs are powered ...
  • A context-aware service architecture for the integration of body sensor networks and social networks through IP multimedia subsystem 

    Domingo Aladrén, Mari Carmen (2011-01-01)
    Article
    Restricted access - publisher's policy
    In this article a new context-aware architecture is proposed for the integration of body sensor networks and social networks through the IP Multimedia Subsystem. Its motivating application scenarios are described. The ...
  • A cooperative ARQ for delay-tolerant vehicular networks 

    Morillo Pozo, Julián David; Trullols Cruces, Óscar; Barceló Ordinas, José María; García Vidal, Jorge (2008-07-25)
    Conference report
    Open Access
    This paper proposes a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The proposed scheme has been implemented and evaluated through an experimental testbed, showing that packet losses in ...
  • Adaptive generalized space shift keying 

    Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-02-21)
    Article
    Open Access
    In this article, we propose a closed-loop precoding method for the Generalized Space Shift Keying (GSSK) modulation scheme, suitable for Multiple-Input-Single-Output (MISO) systems and denoted as adaptive GSSK (AGSSK), ...
  • Adaptive loading algorithms for optical OFDM transmission systems 

    Toporcer Korec, Norman (Universitat Politècnica de Catalunya, 2011-07-20)
    Bachelor thesis
    Open Access
  • Adding QoS support for timeliness to the observe extension of CoAP 

    Ludovici, Alessandro; García, Ernesto; Gimeno, Xavier; Calveras Augé, Anna M. (2012)
    Conference report
    Restricted access - publisher's policy
    In this paper, we propose a modification of the observe extension of CoAP to include Quality of Service (QoS) support for timeliness. The proposed QoS support is based on delivery priority. Nodes are able to express the ...
  • Addressing mobility issues in mobile environment 

    Zhang, Ji (Universitat Politècnica de Catalunya, 2008-10-09)
    Master thesis (pre-Bologna period)
    Open Access
  • Ad hoc and neighborhood search methods for placement of mesh routers in Wireless Mesh Networks 

    Xhafa Xhafa, Fatos; Sánchez Lopez, Christian; Barolli, Leonard (2009)
    Conference report
    Open Access
    With the fast development in wireless technologies and wireless devices, Wireless Mesh Networks (WMN) are becoming and important networking infrastructure, especially due to their low cost of deployment and maintenance. A ...
  • A dual-mode Ultra-Wideband wireless platform for remote patient monitoring systems 

    Bisbe Novoa, Sergi; Reyes Navarro, Carlos Alberto (Universitat Politècnica de Catalunya, 2012-07-11)
    Master thesis
    Open Access
    The combination of two factors demands the need to find a solution that guarantees the well-being of the people suffering from chronic diseases. On the one hand, the increase of the life expectancy leads to an older world's ...
  • Advanced Delivery System for 5G-enabled Photonic Networks 

    Gómez Gonzalvo, Alberto (Universitat Politècnica de Catalunya, 2014-05-21)
    Bachelor thesis
    Open Access
    Covenantee:  Danmarks tekniske universitet
    [ANGLÈS] The advent of mobile devices such as smartphones or tablets demanding high capacity services drives a solution for next generation wireless networks. Wireless and optical networks are converging to increase the ...
  • Advanced Solutions for High Capacity mm-wave Radio over Fiber Systems 

    Llorens Revull, Mònica (Universitat Politècnica de Catalunya, 2014-05-30)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Danmarks tekniske universitet
    [ANGLÈS] Currently, the usage of wireless devices and broadband communications is growing. As a consequence the research in how to implement high data rates in Radio over Fiber (RoF) links is becoming an interesting field ...
  • Advances in wireless community networks with the community-lab testbed 

    Navarro Moldes, Leandro; Baig Viñas, Roger; Barz, Christoph; Bonicioli, Joseph; Braem, Bart; Freitag, Fèlix; Vilalta i Balaguer, Ivan (2016-07)
    Article
    Open Access
    Beyond traditional telecom providers, citizens and organizations pool their own resources and coordinate in order to build local network infrastructures to address the digital divide in many parts of the world. These ...
  • A fuzzy-based CAC scheme for wireless cellular networks considering different priorities 

    Ikebata, Taku; Mino, Gjergji; Barolli, Leonard; Koyama, Akio; Durresi, Arjan; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2010)
    Conference report
    Open Access
    The mobile cellular systems are expected to support multiple services with guaranteed Quality of Service(QoS). But, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is ...
  • A GA-based simulation system for WMNs: comparison analysis for different number of flows, client distributions, DCF and EDCA functions 

    Barolli, Admir; Oda, Tetsuya; Matsuo, Keita; Cuka, Miralda; Barolli, Leonard; Xhafa Xhafa, Fatos (Springer, 2017-02-04)
    Article
    Open Access
    In this paper, we compare the performance of Distributed Coordination Function (DCF) and Enhanced Distributed Channel Access (EDCA) for normal and uniform distributions of mesh clients considering two Wireless Mesh Network ...
  • A GA-based simulation system for WMNs: performance analysis for different WMN architectures considering transmission rate and OLRS protocol 

    Matsuo, Keita; Oda, Tetsuya; Barolli, Admir; Ikeda, Makoto; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Open Access
    In this paper, we evaluate the performance of two WMN architectures considering throughput, delay, jitter and fairness index metrics. For simulations, we used ns-3. We compare the performance for two architectures considering ...