Ara es mostren els items 96-115 de 172

    • Joint radio resource management for LTE-UMTS coexistence scenarios 

      Vucevic, Nemanja; Pérez Romero, Jordi; Sallent Roig, Oriol; Agustí Comes, Ramon (2009)
      Text en actes de congrés
      Accés obert
      Constantly increasing demand for throughput and quality in wireless communication systems leads to continuous research of wise radio resource management, because of the scarce availability of frequency bands and the ...
    • Knowledge-based 5G radio access network planning and optimization 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2016)
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      Self-Organizing Network (SON) functionalities in forthcoming 5G systems stand as a promising field for the fertilization of Artificial Intelligence (AI) mechanisms. In this respect, this paper analyzes how SON functionalities ...
    • Learning-based coexistence for LTE operation in unlicensed bands 

      Sallent Roig, Oriol; Pérez Romero, Jordi; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2015)
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      The use of Long Term Evolution (LTE) in the unlicensed 5 GHz band, referred to as LTE-U, is a promising enhancement to increase the capacity of LTE networks and meet the requirements foreseen for future systems. Nevertheless, ...
    • MAC-PHY enhancement for 802.11b WLAN systems via cross-layering 

      Alonso Zárate, Luis Gonzaga; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2003)
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      The paper analyses the performance of a novel MAC-PHY scheme for wireless local area networks (WLAN) that makes use of distributed queues and cross-layer concepts to improve radio channel utilisation. Analytical values for ...
    • Machine learning-assisted cross-slice radio resource optimization: Implementation framework and algorithmic solution 

      Ferrús Ferré, Ramón Antonio; Pérez Romero, Jordi; Sallent Roig, Oriol; Vilà Muñoz, Irene; Agustí Comes, Ramon (2020-12)
      Article
      Accés obert
      Network slicing is a central feature in 5G and beyond systems to allow operators to customize their networks for different applications and customers. With network slicing, different logical networks, i.e. network slices, ...
    • Managing radio network congestion in UTRA FDD 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Agustí Comes, Ramon; Sánchez, Juan (Institution of Electrical Engineers, 2002-10)
      Article
      Accés restringit per política de l'editorial
      The presence of different service classes in the context of 3G mobile communication systems opens up new possibilities to exploit the spectrum in an efficient way. In the search of such a high efficiency, radio network ...
    • ML aided context feature extraction for cognitive radio 

      Bolea, Liliana; Pérez Romero, Jordi; Agustí Comes, Ramon (2013-10)
      Article
      Accés restringit per política de l'editorial
      This paper addresses the estimation of different context features of a primary user network, such as transmitters’ positions, antenna patterns and directions, and propagation model characteristics. It is based on radio ...
    • Monitorización de radioenlaces digitales de gran capacidad 

      Agustí Comes, Ramon; Casadevall Palacio, Fernando José (Universidad de Sevilla, 1984)
      Text en actes de congrés
      Accés obert
      In digital radio links, where the transmission quality is determined by the average error rate, a pseudo-error method is presented to monitor the link performance. Results are shown for a 16 QAM modulation system and 140Mb/s ...
    • Multi-tenant mobility control in small cells as a service 

      Sallent Roig, Oriol; Pérez Romero, Jordi; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      Small Cell as a Service (SCaaS) is envisaged as a solution to facilitate the provisioning of shared radio access capacity to mobile operators in areas where dedicated per-operator deployments may be impractical, typically ...
    • Multiple tone interferers in an FH-MFSK spread spectrum communication system 

      Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 1984)
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      An analysis of the effect of multiple tone interferers on the bit error rate in a Frequency-Hopped Multiple Frequency Shift Keying (FH-MFSK) spread spectrum communication is given. A constant insertion rate de tection ...
    • Multiuser resource allocation optimization using bandwidth-power product in cognitive radio networks 

      Tachwali, Yahia; Lo, B.F.; Akyildiz, Ian; Agustí Comes, Ramon (2013-03)
      Article
      Accés restringit per política de l'editorial
      In this paper, the problem of resource allocation optimization is studied for a single-cell multiuser cognitive radio network in the presence of primary user networks. The spectral access of the cognitive radio network is ...
    • Novel eICIC scheme for HetNets exploiting jointly the frequency, power and time dimensions 

      Koutlia, Aikaterini; Pérez Romero, Jordi; Agustí Comes, Ramon (2014)
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      User demand for capacity and high data rate applications imposes the need for new technologies able to cope with these challenges. Fourth Generation cellular networks have set the initiative for a technology evolution that ...
    • Obtencion de un perfil de retardo de potencias en un entorno "indoor" mediante el uso de un analizador de redes 

      Agustí Comes, Ramon; Ruiz Boqué, Sílvia (1991)
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      The results of a new method in wide band indoor channel measuremenrs are presemed in This paper. Multipath propagarion of this channel has been studied and compared jor two type of medium-size buildings in the 900 M Hz and ...
    • On 5G radio access network slicing: radio interface protocol features and configuration 

      Ferrús Ferré, Ramón Antonio; Sallent Roig, Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2018-01-10)
      Article
      Accés obert
      Network slicing is a fundamental capability for future Fifth Generation (5G) networks to facilitate the cost-effective deployment and operation of multiple logical networks over a common physical network infrastructure in ...
    • On enhancing almost blank subframes management for efficient eICIC in HetNets 

      Koutlia, Katerina; Pérez Romero, Jordi; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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      Heterogeneous Networks (HetNets) have been a crucial point in the evolution of mobile networks that boost the network performance with the addition of small cells. The use of Enhanced ICIC (eICIC) techniques such as Almost ...
    • On extracting user-centric knowledge for personalised quality of service in 5G networks 

      Sánchez González, Juan; Sallent Roig, Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Comunicació de congrés
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      This paper aims to improve the user Quality of Service (QoS) in 5G networks by introducing a user-centric view that exploits the predictability of the user’s daily motifs. An agglomerative clustering is used to identify ...
    • On implementing RRM/SON in virtualized multi-tenant small cell networks 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
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      This paper addresses the implementation of Radio Resource Management (RRM) and Self-Organizing Networks (SON) functions in virtualized multi-tenant small cell networks. In this context, the deployment and operation of ...
    • On learning and exploiting time domain traffic patterns in cellular radio access networks 

      Pérez Romero, Jordi; Sánchez González, Juan; Sallent Roig, Oriol; Agustí Comes, Ramon (Springer, 2016)
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      This paper presents a vision of how the different management procedures of future Fifth Generation (5G) wireless networks can be built upon the pillar of artificial intelligence concepts. After a general description of a ...
    • On learning mobility patterns in cellular networks 

      Sánchez González, Juan; Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, Oriol (Springer, 2016)
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      This paper considers the use of clustering techniques to learn the mobility patterns existing in a cellular network. These patterns are materialized in a database of prototype trajectories obtained after having observed ...
    • On radio access network slicing from a radio resource management perspective 

      Sallent Roig, Oriol; Pérez Romero, Jordi; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2017-04)
      Article
      Accés obert
      Network slicing is a fundamental capability for future 5G networks to properly support current and envisioned future application scenarios. Network slicing facilitates a cost-effective deployment and operation of multiple ...