Now showing items 1-20 of 105

  • Acte inaugural de l'acció europea COST IC1004: Cooperative Radio Communications for Green Smart Environments 

    Giró Roca, Antoni; Alsina Català, Claudi; Cardona, Narcís; Ruiz Boqué, Sílvia (2012-02-08)
    Audiovisual
    Open Access
  • Adapting fractional frequency reuse to realistic OFDMA cellular networks 

    González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Lema, Maria A.; Lee, Dong Seop (2013)
    Conference report
    Restricted access - publisher's policy
    Effective intercell interference (ICI) mitigation has been identified as a key challenge for emerging OFDMA cellular technologies such as Long Term Evolution (LTE). In order to address this issue, mobile operators have ...
  • Admission control in LTE uplink systems with sounding reference signals based channel state indicator 

    Lema, Maria A.; Ramon Ferran, Sergi; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2012)
    Conference report
    Restricted access - publisher's policy
    This article focuses on the investigation of the Admission Control techniques in order to assure Quality of Service (QoS) in Long Term Evolution (LTE) systems. So as to estimate the users bandwidth requirement, Sounding ...
  • A metaheuristic-based downlink power allocation for LTE/LTE-A cellular deployments 

    González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Lee, Dong Seop (2014-08)
    Article
    Restricted access - publisher's policy
    The explosive growth of cellular networks makes their deployment and maintenance more and more complex, time consuming, and expensive. Self-Organizing Networks have been recognized as a promising way to alleviate this ...
  • An analytical view of static intercell interference coordination techniques in OFDMA networks 

    González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    This paper presents a novel methodology to assess the downlink performance of static intercell interference coordination techniques in the context of OFDMA-based cellular networks. In the last few years, interference ...
  • A novel ICIC-oriented channel state information feedback scheme for aperiodic reporting in LTE 

    González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2012)
    Conference report
    Restricted access - publisher's policy
    In moderm OFDMA-based cellular networks, intercell interference is the main issue limiting the capacity of these systems. Recently, intensive research work has been focused on intercell interference coordination as it ...
  • A novel multiobjective framework for cell switch-off in dense cellular networks 

    González González, David; Yanikomeroglu, Halim; García Lozano, Mario; Ruiz Boqué, Sílvia (2014)
    Conference report
    Restricted access - publisher's policy
    The green communications paradigm has been receiving much attention in wireless networks in recent years. More specifically, in the context of cellular communications, the concept of Cell Switch Off (CSO) has been ...
  • A novel multiobjective framework for cell switch-off in dense cellular networks 

    González González, David; Yanikomeroglu, Halim; García Lozano, Mario; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    The green communications paradigm has been receiving much attention in wireless networks in recent years. More specifically, in the context of cellular communications, the concept of Cell Switch Off (CSO) has been recognized ...
  • Aprendizaje basado en proyectos: cómo empezar ya 

    Ruiz Boqué, Sílvia; Valero García, Miguel (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2011-02-02)
    Conference lecture
    Open Access
  • Attitude estimation for base station antennas based on downlink channel statistics 

    Ling, Cen; He, Yonguy; Yin, Xuefeng; Zhong, Zhimeng; Duan, Weiming; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    In this contribution, a maximum-likelihood-based approach is proposed for estimating the attitudes of sectoring base station (BS) antennas based on the power of the received signals observed by multiple user equipments ...
  • Attitude estimation for in-service base station antenna using downlink channel fading statistics 

    Ling, Cen; Yin, Xuefeng; Yongyu, He; Ruiz Boqué, Sílvia (2015-01-01)
    Article
    Open Access
    Amaximum-likelihood-estimation method is proposed for extracting the attitude of a sectoring base station (BS) antenna by using the received signal strengths observed by multiple user equipments (UEs) in this contribution. ...
  • Average power prediction in microcells 

    Ruiz Boqué, Sílvia; Fernández, M (Institute of Electrical and Electronics Engineers (IEEE), 1994)
    Conference report
    Open Access
    A propagation model to estimate the average received power in an urban microcell environment has been developed. This model can be used both in line of sight (LOS) and non line of sight (NLOS) conditions in any regular or ...
  • A wireless sensor network design for the Help4Mood european project 

    Pérez Díaz de Cerio, David; Ruiz Boqué, Sílvia; Rosell Ferrer, Francisco Javier; Ramos Castro, Juan José; Castro Robles, Joan Carles (VDE Conference Publications, 2012)
    Conference report
    Restricted access - publisher's policy
    Help4Mood is a closed loop approach supporting the control, communication and treatment management of patients with Major Depression. The first out of the three main components of the Help4Mood solution is the Personal ...
  • CA2-MN6: Final exam: spring 2019 

    Ruiz Boqué, Sílvia (Universitat Politècnica de Catalunya, 2019-06-05)
    Exam
    Restricted access to the UPC academic community
  • Cancelación del ruido AM en sistemas de transmisión coherentes por fibra óptica: receptor balanceado 

    Ruiz Boqué, Sílvia; Junyent Giralt, Gabriel (Institución ferial de Madrid (IFEMA), 1988)
    Conference report
    Open Access
    In this work the authors have studied the AM noise influence over coherent transmission systems employing heterodyne-type detection. A dual-detector optical heterodyne receiver is also studied in arder to eliminate the LO ...
  • Capacity and coverage trade-off in WCDMA environments with repeaters deployment 

    García Lozano, Mario; Alonso Zárate, Luis Gonzaga; Casadevall Palacio, Fernando José; Ruiz Boqué, Sílvia (WPMC, 2005)
    Conference lecture
    Open Access
    This work derives the analytic expression of the feasibility condition for the uplink of a WCDMA mobile communications system with repeaters deployment in a multiservice environment with a general heterogeneous layout. ...
  • Capacity and coverage tradeoff in WCDMA environments with repeaters deployment 

    García Lozano, Mario; Alonso Zárate, Luis Gonzaga; Casadevall Palacio, Fernando José; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2005-09-30)
    Conference lecture
    Restricted access - publisher's policy
    This paper derives the analytic expression of the feasibility condition for the uplink of a WCDMA mobile communications system with repeaters in a multiservice environment with a general heterogeneous layout. In particular, ...
  • Capacity and coverage tradeoff in WCDMA environments with repeaters deployment. 

    García Lozano, Mario; Alonso Zárate, Luis Gonzaga; Casadevall Palacio, Fernando José; Ruiz Boqué, Sílvia (2007-02)
    Article
    Open Access
  • Channel maps and stochastic models in elevation based on measurements in operating networks 

    Yu, Jiwei; Yin, Xuefeng; Chen, Jiajing; Zhang, Nan; Zhong, Zhimeng; Duan, Weiming; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    In this contribution, a channel measurement campaign recently carried out in the Jiading campus of Tongji University, Shanghai, China, is introduced. The downlink signals of an active Universal Mobile Telecommunications ...
  • Chip level simulation of the downlink in UTRA-FDD 

    Olmos Bonafé, Juan José; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Conference report
    Open Access
    The specifications of UMTS Terrestrial Radio Access (UTRA) for the physical layer of the downlink make use of orthogonal variable spreading factor (OVSF) codes to preserve the orthogonality between downlink channels of ...