Now showing items 1-20 of 386

    • 5G framework for automated network adaptation in mission critical services 

      Jimeno, Elisa; Pérez Romero, Jordi; Vilà Muñoz, Irene; Blanco Jauregi, Begoña; Sanchoyerto, Aitor; Fernández, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      Mission Critical Services (MCS) are gaining interest among network operators to offer alternative communications than conventional trunked radio systems. They promise a simplified management of cloud and radio resources ...
    • A 125-143-GHz frequency-reconfigurable BiCMOS compact LNA using a single RF-MEMS switch 

      Heredia, Julio; Ribó i Pal, Miquel; Pradell i Cara, Lluís; Wipf, Selin Tolunay; Göritz, Alexander; Wipf, Christian; Kaynak, Mehmet (2019-05-01)
      Article
      Open Access
      In this letter, a 125-143-GHz frequency-reconfigurable BiCMOS compact low-noise amplifier (LNA) is presented for the first time. It consists of two cascode stages and was fabricated using a 0.13-µm SiGe:C BiCMOS process, ...
    • A case of acquisition, transmission and use of information to control a manufacturing process 

      Fernández Román, Laura (Universitat Politècnica de Catalunya, 2009-10-08)
      Master thesis
      Open Access
    • A channel allocation algorithm for OSA-Enabled IEEE 802.11 WLANs 

      Novillo Parales, Francisco Vicente; Churchman, Mathew; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2009-09)
      Conference report
      Open Access
      Channel allocation problem is a major challenge in wireless local area networks (WLANs), especially in dense deployments of access points (APs) where congestion of the unlicensed spectrum bands (i.e., ISM bands) could ...
    • A channel allocation algorithm for OSA-Enabled IEEE 802.11 WLANs 

      Novillo Parales, Francisco Vicente; Churchman, Mathew; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2009)
      Conference report
      Open Access
      Channel allocation problem is a major challenge in wireless local area networks (WLANs), especially in dense deployments of access points (APs) where congestion of the unlicensed spectrum bands (i.e., ISM bands) could ...
    • A cross-layer energy-saving mechanism for an enhancement of 802.11 WLAN systems 

      Begoña, Otal; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      Conference lecture
      Restricted access - publisher's policy
      Most multiple access collision avoidance-based (MAC) protocols for WLAN systems have been using fixed transmission power and have not considered energy-saving techniques targeted on channel estimation models. In order to ...
    • A cross-layer scheduling algorithm for DQCA-based WLAN systems with heterogeneous voice-data traffic 

      Kartsakli, Elli; Cateura, Alex; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (ieee, 2005-09-30)
      Conference lecture
      Restricted access - publisher's policy
      This paper proposes a cross-layer priority-based scheduling algorithm for WLAN systems using the DQCA MAC protocol where heterogeneous voice-data traffic is present. In this algorithm voice users have always the highest ...
    • A distributed energy-aware routing protocol for underwater wireless sensor networks 

      Domingo Aladrén, Mari Carmen (2011-04-01)
      Article
      Restricted access - publisher's policy
      The design of routing protocols for Underwater Wireless Sensor Networks (UWSNs) poses many challenges due to the intrinsic properties of underwater environments. In this paper we present DUCS (Distributed Underwater ...
    • A dynamic multimetric weights distribution in a multipath routing protocol using video-streaming services over MANETs 

      Mezher, Ahmad Mohamad; Iza, Cristhian; Tripp Barba, Carolina; Aguilar Igartua, Mónica (2015)
      Conference report
      Restricted access - publisher's policy
      Mobile ad hoc networks (MANETs) are infrastructureless networks formed by wireless mobile devices. Routing in MANETs is a process where the best path will be selected so that packets will be forwarded. When a MANET ...
    • A MAC protocol for reliable broadcast communications in wireless network-on-chip 

      Mestres Sugrañes, Albert; Abadal Cavallé, Sergi; Torrellas, Josep; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Association for Computing Machinery (ACM), 2016)
      Conference report
      Restricted access - publisher's policy
      The Wireless Network-on-Chip (WNoC) paradigm holds considerable promise for the implementation of fast and efficient on-chip networks in manycore chips. Among other advantages, wireless communications provide natural ...
    • A machine learning-based approach for virtual network function modeling 

      Mestres Sugrañes, Albert; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Recent trends in networking are proposing the use of Machine Learning (ML) techniques for the control and operation of the network. The application of ML to networking brings several use-cases as well as challenges. The ...
    • A model for the mobile market based on customers profile to analyze the churning process 

      Flores Méndez, Mario Rogelio; Postigo Boix, Marcos; Melus Moreno, José Luis; Stiller, Burkhard (Springer, 2016-08-04)
      Article
      Open Access
      In the current telecommunications market that is reaching high saturation levels, mobile network operators (MNOs) try to position themselves among customers through aggressive marketing campaigns and offers. In this ...
    • A near-optimum cross-layered distributed queuing protocol for wireless LAN: medium access control protocols for wireless LANs 

      Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Cateura Díaz, Alejandro; Alonso Zárate, Luis Gonzaga (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2008-02)
      Article
      Open Access
      Distributed Queuing Collision Avoidance (DQCA) is a distributed MAC protocol for WLAN systems that offers near optimum performance. The protocol implements a reservation scheme that ensures collision-free data transmissions ...
    • A new auto-provisioned squat-based traffic management strategy for multiclass networks 

      Hesselbach Serra, Xavier; García Espinosa, Antonio (2009)
      Conference report
      Open Access
      In search of being able to offer better quality of service (QoS) in multiclass networks, a strategy that aims to allow resources between different classes of service (CoS) to be shared according to the class’s needs and ...
    • A new MAC approach in wireless body sensor networks for health care 

      Otal Ruiz, Begoña; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (INTECH, 2011-02)
      Part of book or chapter of book
      Open Access
    • A new medium access protocol based on distributed queues for a CDMA environment 

      Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon; Sallent Roig, José Oriol (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Conference report
      Restricted access - publisher's policy
      This paper presents and analyses a new stable near-optimum random access protocol. The proposed access scheme is adapted for being used in a CDMA environment. It is based on distributed queues and a collision resolution ...
    • A novel cheater and jammer detection scheme for IEEE 802.11-based wireless LANs 

      García Villegas, Eduard; Afaqui, Muhammad Shahwaiz; López Aguilera, M. Elena (2015-07-05)
      Article
      Open Access
      The proliferation of IEEE 802.11 networks has made them an easy and attractive target for malicious devices/adversaries which intend to misuse the available network. In this paper, we introduce a novel malicious entity ...
    • A novel MAC protocol for dynamic ad hoc wireless networks with dynamic self-configurable master-slave architecture 

      Alonso Zárate, Jesús; Alonso Zárate, Luis Gonzaga (Suvisoft IEEE catalog number 04TH8754C, 2004)
      Conference lecture
      Restricted access - publisher's policy
      This paper proposes and analyses a novel MAC protocol for wireless ad hoc networks that makes use of distributed queues to achieve an efficient use of the radio channel. The protocol includes a dynamic self-configurable ...
    • A novel power efficient location-based cooperative routing with transmission power-upper-limit for wireless sensor networks 

      Shi, Juanfei; Calveras Augé, Anna M.; Cheng, Ye; Liu, Kai (2013-05-15)
      Article
      Open Access
      The extensive usage of wireless sensor networks (WSNs) has led to the development of many power- and energy-efficient routing protocols. Cooperative routing in WSNs can improve performance in these types of networks. In ...
    • A practical framework for 802.11 MIMO rate adaptation 

      Deek, Lara; García Villegas, Eduard; Belding, Elizabeth; Lee, Sung-Ju; Almeroth, Kevin (2015-06-04)
      Article
      Open Access
      The emergence of MIMO antennas and channel bonding in 802.11n wireless networks has resulted in a huge leap in capacity compared with legacy 802.11 systems. This leap, however, adds complexity to optimizing transmission. ...