Now showing items 1-16 of 16

  • A comparison of different optimisation search methodologies for self-optimisation in wireless cellular networks 

    Sánchez González, Juan; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    Self-Organising Networks (SON) concept is seen as a way to reduce costs by automating functionalities such as network optimisation usually performed manually with extensive human work time. This paper provides a general ...
  • A novel near-optimum medium acces control protocol for a distributed cooperative ARQ scheme in wireless networks 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008-09-30)
    Conference lecture
    Restricted access - publisher's policy
    The distributed queuing MAC protocol for cooperative networks (DQCOOP) is presented in this paper as an innovative MAC protocol designed to coordinate the relay retransmissions in a cooperative automatic retransmission ...
  • A simple closed-form approximation for the packet loss rate of a TCP connection over wireless links 

    Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (2014-09-15)
    Article
    Restricted access - publisher's policy
    This letter presents a new and simple model for a TCP flow experiencing random packet losses due to both transmission errors and congestion events. From this model, we will derive a straightforward expression of a unified ...
  • Brief announcement: Game theoretical approach for energy-delay balancing in distributed duty-cycled MAC protocols of wireless networks 

    Doudou, Messaoud; Barceló Ordinas, José María; Djenouri, Djamel; García Vidal, Jorge; Badache, Nadjib (Association for Computing Machinery (ACM), 2014)
    Conference report
    Open Access
    Optimizing energy consumption and end-to-end (e2e) packet delay in energy constrained distributed wireless networks is a conflicting multi-objective optimization problem. This paper investigates this trade-off from a ...
  • Distortion model for H.264/AVC sequences 

    Martínez García, Sara (Universitat Politècnica de Catalunya, 2010-05-04)
    Master thesis
    Open Access
  • Dynamic Buffer Size Allocation in Wireless Networks for Non-Elastic Traffic 

    Rumipamba Zambrano, Rubén Darío (Universitat Politècnica de Catalunya, 2014-01-08)
    Master thesis
    Open Access
    The dimensioning of the buffers in communication devices (routers and switches) is an important aspect to take into account since it affects some parameters of network performance such as: loss probability, end-to-end delay ...
  • Dynamic buffer sizing for wireless devices via maximum entropy 

    Vázquez Rodas, Andrés; Cruz Llopis, Luis Javier de la; Aguilar Igartua, Mónica; Sanvicente Gargallo, Emilio (2014-05-15)
    Article
    Restricted access - publisher's policy
    Buffer overflow is an important phenomenon in data networks that has much bearing on the overall network performance. Such overflow critically depends on the amount of storage space allotted to the transmission channels. ...
  • Energy saving potentials in the radio access through relaying in future networks 

    Pérez Romero, Jordi; Sallent Roig, José Oriol; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    The progressive deployment of cell sites in wireless networks to deal with the massive demand of wireless services experienced in the last years has led to a huge increase in energy consumption and associated operational ...
  • Erlang capacity degradation in multi-access/multi-service wireless networks due to terminal/coverage restrictions 

    Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2008)
    Conference report
    Restricted access - publisher's policy
    The benefits of jointly managing the combined radio resources offered by heterogeneous networks consisting of several Radio Access Technologies (RATs) have been profusely studied and assessed in recent years. Nevertheless, ...
  • Integració de xarxes MANET qMp en la comunitat Guifi·net 

    Florit López, Jorge Luis (Universitat Politècnica de Catalunya, 2014-01-24)
    Master thesis (pre-Bologna period)
    Open Access
    Integració de xarxes de tipus MANET/Mesh amb el software del projecte qMp dins de la xarxa comunitària Guifi·net
  • Monitoring radiological incidents through an opportunistic network 

    Reyes Muñoz, María Angélica; Pastor Llorens, Enric; Gasull, Marti; Barrado Muxí, Cristina (2015-01-01)
    Article
    Open Access
    In case of radiological incidents before to send a human team to the site would be better have real time information about the situation that rescue teams can find. In this paper we simulate an opportunistic network over ...
  • On the maximum performance in opportunistic routing 

    Cerdà Alabern, Llorenç; Darehshoorzadeh, Amir; Pla Boscà, Vicent (IEEE Computer Society Publications, 2010)
    Conference report
    Open Access
    In recent years there has been a growing interest in Opportunistic Routing as a way to increase the capacity of wireless networks by exploiting its broadcast nature. By contrast to traditional uni-path routing, in opportunistic ...
  • Performance evaluation of a cooperative scheme for wireless networks 

    Alonso Zárate, Jesús; Gómez, J; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2006-09-30)
    Conference lecture
    Restricted access - publisher's policy
    It has been shown that the cooperation among nodes can improve the performance of a network under certain considerations. So far, research focus has been mainly put on cooperation and not on the coordination required to ...
  • Saturation throughput analysis of a passive cluster-based medium access control protocol for ad hoc wireless networks 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Cateura Díaz, Alex; Alonso Zárate, Luis Gonzaga (2008)
    Conference report
    Restricted access - publisher's policy
    Several clustering algorithms have been proposed during the last decade within the context of ad hoc and sensor networks. They allow adding some organization to an otherwise disorganized network. Although the virtual ...
  • The Degrees of Freedom of the 3-user (p,p+1) MIMO Interference channel 

    Torrellas Socastro, Marc (Universitat Politècnica de Catalunya, 2013-06-25)
    Master thesis
    Open Access
    [ANGLÈS] This work is focused on the study of the fundamental limits of wireless channels. In this context, the degrees of freedom (DoF) are a measure to analyze those limits at the high SNR regime. The contribution of ...
  • Throughput analysis of a medium access control protocol for a distributed cooperative ARQ scheme in wireless networks 

    Alonso Zárate, Jesús; Kartsakli, Elli; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (2008)
    Conference report
    Restricted access - publisher's policy
    A throughput analysis of the Persistent Relay Carrier Sensing Multiple Access (PRCSMA) protocol is presented in this paper. The protocol has been designed to execute a cooperative ARQ (C-ARQ) scheme in wireless networks. ...