Now showing items 1-14 of 14

    • Advanced Solutions for High Capacity mm-wave Radio over Fiber Systems 

      Llorens Revull, Mònica (Universitat Politècnica de Catalunya, 2014-05-30)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Danmarks tekniske universitet
      [ANGLÈS] Currently, the usage of wireless devices and broadband communications is growing. As a consequence the research in how to implement high data rates in Radio over Fiber (RoF) links is becoming an interesting field ...
    • Analysis of blocking in mmWave cellular systems: application to relay positioning 

      García Ruiz, Cristian; Pascual Iserte, Antonio; Muñoz Medina, Olga (2021-02)
      Article
      Open Access
      Within the framework of 5G, blockage effects occurring in the mmWave band are critical. Previous works describe the effects of blockages in isolated and multiple links for simple blocking objects, modeled with mathematical ...
    • Analysis of blocking in mmWave cellular systems: Characterization of the LOS and NLOS intervals in urban scenarios 

      García Ruiz, Cristian; Pascual Iserte, Antonio; Muñoz Medina, Olga (Institute of Electrical and Electronics Engineers (IEEE), 2020-12)
      Article
      Open Access
      In the millimeter waves (mmWave) bands considered for 5G and beyond, the use of very high frequencies results in the interruption of communication whenever there is no line of sight between the transmitter and the receiver. ...
    • Design and performance evaluation of a dielectric flat lens antenna for millimeter-wave applications 

      Imbert Villà, Marc; Papió, Anna; de Flaviis, Franco; Jofre Roca, Lluís; Romeu Robert, Jordi (2015-01-01)
      Article
      Open Access
      In this letter, a practical fabrication of a novel inhomogeneous gradient-index dielectric flat lens for millimeter-wave applications is presented. A previous theoretical design of a dielectric flat lens composed of different ...
    • Design and performance evaluation of a dielectric flat lens for millimeter-wave applications 

      Imbert Villà, Marc; Papió, Anna; de Flaviis, Franco; Jofre Roca, Lluís; Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      In this paper, a practical fabrication of a dielectric flat lens for millimeter-wave applications is presented. A previous theoretical dielectric flat lens antenna design, consisting of a set of concentric rings with ...
    • Effect of correlated building blockages on the ergodic capacity of mmWave systems in urban scenarios 

      García Ruiz, Cristian; Muñoz Medina, Olga; Pascual Iserte, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2022-05)
      Article
      Open Access
      The millimeter waves (mmWave) bands, considered to support the forthcoming generation of mobile communications technologies, have a well-known vulnerability to blockages. Recentworks in the literature analyze the blockage ...
    • Energy and spectrum efficient user association in 5G heterogeneous networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      Due to the dense small cell deployment to cope with the increased data traffic of fifth generation (5G) networks, the direct backhaul (BH) connection of all small cells to the core network becomes challenging. To that end, ...
    • Energy and spectrum efficient user association in millimeter wave backhaul small cell networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Di Renzo, Marco; Verikoukis, Christos (2017-02)
      Article
      Open Access
      Macrocells are expected to be densely overlaid by small cells (SCs) to meet increasing capacity demands. Due to their dense deployment, some SCs will not be connected directly to the core network, and thus, they may forward ...
    • On the mobility of moderate speed users in ultra dense small cell deployments with mmW 

      Joud, Mohammad; García Lozano, Mario; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference lecture
      Restricted access - publisher's policy
      This paper deals with mobility robustness in a context of ultra-dense deployments operating at the millimeter wave (mmW) band. In order to increase the threshold speed of user equipments (UEs) allowed at the small cell ...
    • Positioning using compressed sensing in 5G 

      Martín-Blas Avilés, Eric (Universitat Politècnica de Catalunya, 2021-10-25)
      Bachelor thesis
      Open Access
      The mobile communications sector has seen tremendous growth in recent years which has led to a huge demand for mobile data. This demand will require new technologies that can offer the sufficient capacity that the sector ...
    • Receive antenna selection and hybrid precoding for receive spatial modulation in massive MIMO systems 

      Raafat Hosny Mohamed Fahm, Ahmed; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference lecture
      Open Access
      Recently, a receive spatial modulation (RSM) for massive multiple-input-multiple-output operating in millimeter wave (mmWave) was introduced with the purpose of simplifying user terminal circuit by employing only one ...
    • Silicon microlens antenna for multi-pixel THz heterodyne detector arrays 

      Lee, Choonsup; Chattopadhyay, Goutam; Jung, Cecile; Reck, Theodore; Cooper, Ken; Peralta, Alex; Lin, Robert; Mehdi, Imran; Alonso del Pino, María; Llombart Juan, Nuria (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      Silicon micromachined RF passive components such as washers, waveguide with 90 degree bends for 325-500 GHz band, and silicon-stacked blocks for W-band (75-110 GHz) GaAs power amplifiers have been designed, microfabricated, ...
    • Theoretical research on new concepts for the remote sensing of hydrometeors 

      Martín Neira, Manuel; Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Gasparini, O; Arbulino, M V (1996)
      Conference report
      Open Access
      There is an interest for climatology and meteorology to map hydrometeors, and in particular precipitation, both over the entire globe and across large defined regions. To achieve this goal at the proper spatial and temporal ...
    • Water drop lens antenna for sub-THz imaging 

      Mitjans, Joan (Universitat Politècnica de Catalunya, 2021-07-06)
      Master thesis
      Open Access
      Covenantee:   Kungliga Tekniska högskolan
      La banda de frecuencias de ondas milimétricas (MMW), caracterizada por una elevada atenuación atmosférica y un gran ancho de banda disponible, se ha convertido de gran interés para aplicaciones de imágenes de radar de alta ...