Listar por tema "Radio relay systems"

Mostrando ítems 1-13 de 13

  • Acceso a contenido en plataforma Raspberry Pi 

    Bades, Maria Ramona (Universitat Politècnica de Catalunya, 2016-07-15)
    Trabajo final de grado
    Acceso restringido por decisión del autor
    In this project was developed an application in Android and a script in Python which makes the Bluetooth communication between a mobile device and a Raspberry Pi 2. The communication consists in the transmission data, such ...

  • Anàlisi de redundància dels nodes d'una xarxa 

    Gomariz Gimena, Gerard (Universitat Politècnica de Catalunya, 2017-01)
    Trabajo final de grado
    Acceso restringido por decisión del autor
    Realizado en/con:  Xarxa Oberta de Catalunya
    The main goal of this project is to provide redundancy to the nodes of a Network, in this case the Network is owned by Xarxa Oberta de Catalunya. Different aspects will be analyzed with the goal to determine if that node ...

  • A survey of propagation channel modelling for UAV communications 

    Sala Sucarrats, Oriol (Universitat Politècnica de Catalunya, 2018-07)
    Trabajo final de grado
    Acceso abierto
    Realizado en/con:  Linköpings Universitet
    The purpose of this project is to make a survey about channel propagation models in Air to Ground communications, also found in low altitude Unmanned Aircraft Vehicles links. The project consists on gathering the literature ...

  • Comportamiento de un circuito recuperador de portadora en presencia de una propagación multicamino para un radioenlace a 140Mb/s 

    Agustí Comes, Ramon (Unión Científica Internacional de Radio (URSI), 1983)
    Texto en actas de congreso
    Acceso abierto
    This paper gives the variance of the phase recovered by a conventional quadriphase Costas loop in 16 QAM modulation in the presence of selective fading, represented as a two rays simplified model. The phase error variance ...

  • Monitorización de radioenlaces digitales de gran capacidad 

    Agustí Comes, Ramon; Casadevall Palacio, Fernando José (Universidad de Sevilla, 1984)
    Texto en actas de congreso
    Acceso abierto
    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 ...

  • Network MIMO for downlink in-band relay transmissions with relaying phases of fixed duration 

    Agustín de Dios, Adrián; Vidal Manzano, José; Lagén Morancho, Sandra; Valera, Eduard (2011)
    Texto en actas de congreso
    Acceso restringido por política de la editorial
    A half-duplex relay station (RS)-based cellular system deployment is considered, where multiple base stations (BS) cooperate in the BS-RS in-band transmission for the downlink. The duration of the relay-receive and the ...

  • On the reusage of primary radio resources through the exploitation of the spatiotemporal robustness of the MIMO transmissions 

    Medina Acosta, Gerardo Agni; Delgado Penin, José Antonio (2012-09-20)
    Artículo
    Acceso abierto
    The spatiotemporal robustness of the MIMO transmissions is exploited aiming at inducing opportunistic secondary communications on the primary radio resources. The proposed model makes use of the smallest singular values ...

  • Planejament, anàlisi i realització de radioenllaços mòbils per a TV 

    Heras Miguel, Eduardo (Universitat Politècnica de Catalunya, 2007-07-06)
    Proyecto/Trabajo final de carrera
    Acceso abierto
    Els radioenllaços mòbils, també anomenats semi fixos, ens permeten efectuar una transmissió del senyal de televisió des de qualsevol localització, inclús en punts remots del país, zones boscoses o serralades, sempre que ...

  • Radioenlace digital a 11 GHz para telemando y telecontrol 

    Artal, E.; Cardama Aznar, Ángel; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Elias Fusté, Antoni; Ferrando, Miguel; Jofre Roca, Lluís; de los Reyes, Elías (Institute of Electrical and Electronics Engineers (IEEE), 1984)
    Texto en actas de congreso
    Acceso abierto
    A digital radio-relay link in the band 10.7- 11.7 GHz developed for the remote control system of ENHER is presented. The objectives were the construction of a reliable and yet low-cost transmitter-receiver. To accomplish ...

  • Resource allocation for multi-user massive MIMO sytems 

    Giramé Rizzo, Gerard (Universitat Politècnica de Catalunya, 2018-07-03)
    Trabajo final de grado
    Acceso abierto
    Much higher area data throughput is required in future cellular networks, since the global demand for wireless data traffic is continuously growing. Massive MIMO is one of the most promising candidate technologies for ...

  • S-band downlink for nanosatellites 

    Fernández Capón, Lara (Universitat Politècnica de Catalunya, 2017-06)
    Trabajo final de grado
    Acceso abierto
    The development Nanosatellites has experienced an enormous growth in these past years; becoming more complex and versatile. The NanoSat Lab, located in the Universitat Politècnica de Catalunya, aims to explore and develop ...

  • Sparse model identification of a 4x4 MIMO channel measurements in 5 GHz band 

    Esbri Vidal, Laura (Universitat Politècnica de Catalunya, 2018-07)
    Trabajo final de grado
    Acceso abierto
    The Least Absolute Shrinkage and Selection Operator has gained attention in the applied mathematics and signal processing communities. The thesis provides us theoretical expressions for solving Compressive Sensing by the ...

  • Technoeconomic evaluation of cooperative relaying transmission techniques in OFDM cellular networks 

    Moral, Antolín; Vidal Manzano, José; Pérez, Jorge; Agustín de Dios, Adrián; Marina, Ninoslav; Host-Madsen, Anders (HINDAWI, 2011-02-27)
    Artículo
    Acceso restringido por política de la editorial
    We evaluate the costs in the deployment of a 4G relay-assisted network in the 2.6GHz band following a technoeconomic methodology that departs fromcell dimensioning based on spectral efficiency and outage capacity requirements. ...