Browsing by Author "Bellalta, Boris"

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  • Sfairopoulou, Anna; Bellalta, Boris; Macián, Carlos; Oliver Riera, Miquel (Springer Verlag, 2010)
    In multi-rate WLANs, users can suffer transmission rate changes due to the link adaptation mechanism. This results in a variable capacity channel, which is very hostile for VoIP and can cause serious quality of service ...
  • Sfairopoulou, Anna (Universitat Pompeu Fabra, 2008-07-28)
    In IEEE 802.11 WLANs, Link Adaptation mechanisms, which choose the transmission rate of each node, provoke unexpected and random variations on the effective channel capacity. When these changes are towards lower bitrates, ...
  • Cano Bastidas, Cristina (Universitat Pompeu Fabra, 2011-03-04)
    In the last few years Wireless Sensor Networks (WSNs) have become an interesting field of research mainly due to the challenges and constraints of their design and the broad range of potential applications they can provide. ...
  • Cao Minh, Trang (Universitat Pompeu Fabra, 2014-09-25)
    Through advances in sensor, networking, semiconductor and energy storage technologies, Wireless Sensor Networks (WSNs) are increasingly being deployed in many important applications to enable users to access information ...
  • Martins Dias, Gabriel; Nurchis, Maddalena; Bellalta, Boris (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Monitoring Wireless Sensor Networks (WSNs) are composed of sensor nodes that report temperature, relative humidity, and other environmental parameters. The time between two successive measurements is a critical parameter ...
  • Faridi, Azadeh; Bellalta, Boris; Checco, Alessandro (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Dynamic Channel Bonding (DCB) allows for the dynamic selection and use of multiple contiguous basic channels in Wireless Local Area Networks (WLANs). A WLAN operating under DCB can enjoy a larger bandwidth, when available, ...
  • Bellalta, Boris; Daza, Vanesa; Oliver Riera, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    A queueing model for Multi-rate Multi-user MIMO systems is presented. The model is built upon the assumption that the probability distribution of available destinations among the buffered frames at the Base Station (BS) ...
  • Dovelos, Konstantinos; Matthaiou, Michail; Ngo, Hien Quoc; Bellalta, Boris (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Terahertz (THz) communication is widely considered as a key enabler for future 6G wireless systems. However, THz links are subject to high propagation losses and inter-symbol interference due to the frequency selectivity ...
  • Adame, Toni; Carrascosa Zamacois, Marc; Bellalta, Boris; Pretel, Iván; Etxebarria, Iñaki (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Next-generation Home WiFi networks have to step forward in terms of performance. New applications such as on-line games, virtual reality or high quality video contents will further demand higher throughput levels, as well ...
  • Wilhelmi Roca, Francesc; Cano Bastidas, Cristina; Neu, Gergely; Bellalta, Boris; Jonsson, Anders, 1973-; Barrachina Muñoz, Sergio (Elsevier, 2019)
    Next-generation wireless deployments are characterized by being dense and uncoordinated, which often leads to inefficient use of resources and poor performance. To solve this, we envision the utilization of completely ...
  • Sanabria Russo, Luis (Universitat Pompeu Fabra, 2016-10-21)
    Using a deterministic backoff after successful transmissions as a distributed contention mechanism for access to the channel can draw benefits from scheduled operation, like the elimination of simultaneous transmissions, ...
  • López Raventós, Álvaro; Wilhelmi Roca, Francesc; Barrachina Muñoz, Sergio; Bellalta, Boris (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Next generation of wireless local area networks (WLANs) will operate in dense, chaotic and highly dynamic scenarios that in a significant number of cases may result in a low user experience due to uncontrolled high ...
  • López Raventós, Álvaro; Bellalta, Boris (Elsevier, 2020)
    Enterprise Wireless Local Area Networks (WLANs) consist of multiple Access Points (APs) covering a given area. In these networks, interference is mitigated by allocating different channels to neighboring APs. Besides, ...
  • Lyamin, Nikita; Vinel, Alexey; Jonsson, Magnus; Bellalta, Boris (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Cooperative awareness on the road is intended to support the road users by providing knowledge about the surroundings and relies on the information exchange enabled by vehicular communications. To achieve this goal the ...
  • Moreno, Verónica; Frangi Caregnato, Alejandro; Piella Fenoy, Gemma; Infante, Jorge; Bellalta, Boris (2009-07-03)
    En esta comunicación se presenta el proceso completo de diseño del Curso de Introducción a la Universidad (CIU) que se imparte en la Escuela Superior Politécnica de la Universidad Pompeu Fabra para los estudios de Ingeniería ...
  • AlSkaif, Tarek; Guerrero Zapata, Manel; AlSkaif, Tarek; Bellalta, Boris; Nilsson, Anders (Springer, 2016)
    In microgrids, the integration of distributed energy resources (DERs) in the residential sector can improve power reliability, and potentially reduce power demands and carbon emissions. Improving the utilization of renewable ...
  • Bel, Albert; Adame, Toni; Bellalta, Boris (Elsevier, 2018)
    One of the main challenges when designing a new self-powered Low Power Wide Area Network (LPWAN) technology is the vast operational dependence on its scarce energy resources. Therefore, a thorough identification and ...
  • Moreno, Verónica; Frangi Caregnato, Alejandro; Bellalta, Boris; Piella Fenoy, Gemma; Infante, Jorge (2009-07-03)
    El Curso de Introducción a la Universidad (CIU) se desarrolla en/nla Escuela Superior Politécnica de la Universidad Pompeu Fabra con la intención de alcanzar dos objetivos: (I) ofrecer a los nuevos información sobre las ...
  • Wilhelmi Roca, Francesc; Barrachina Muñoz, Sergio; Bellalta, Boris; Cano Bastidas, Cristina; Jonsson, Anders, 1973-; Ram, Vishnu (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Lots of hopes have been placed on machine learning (ML) as a key enabler of future wireless networks. By taking advantage of large volumes of data, ML is expected to deal with the ever-increasing complexity of networking ...
  • Bellalta, Boris (Universitat Pompeu Fabra, 2007-02-23)
    Les xarxes WLANs possibiliten un accés de banda ampla a Internet des <br/>d'un terminal mòbil, essent una possible solució alternativa a les <br/>xarxes cel·lulars. Tanmateix, aquest tipus de tecnologia presenta certes ...