Browsing by Subject "Ones mil·limètriques"
Now showing items 1-14 of 14
-
Advanced Solutions for High Capacity mm-wave Radio over Fiber Systems
(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
(2021-02)
Article
Open AccessWithin 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
(Institute of Electrical and Electronics Engineers (IEEE), 2020-12)
Article
Open AccessIn 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
(2015-01-01)
Article
Open AccessIn 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
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyIn 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
(Institute of Electrical and Electronics Engineers (IEEE), 2022-05)
Article
Open AccessThe 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
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyDue 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
(2017-02)
Article
Open AccessMacrocells 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
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference lecture
Restricted access - publisher's policyThis 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
(Universitat Politècnica de Catalunya, 2021-10-25)
Bachelor thesis
Open AccessThe 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
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference lecture
Open AccessRecently, 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
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policySilicon 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
(1996)
Conference report
Open AccessThere 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
(Universitat Politècnica de Catalunya, 2021-07-06)
Master thesis
Open Access
Covenantee: Kungliga Tekniska högskolanLa 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 ...
