Browsing by Subject "Radio relay systems"
Now showing items 1-15 of 15
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A survey of propagation channel modelling for UAV communications
(Universitat Politècnica de Catalunya, 2018-07)
Bachelor thesis
Open Access
Covenantee: Universitetet i LinköpingThe 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 ... -
Acceso a contenido en plataforma Raspberry Pi
(Universitat Politècnica de Catalunya, 2016-07-15)
Bachelor thesis
Restricted access - author's decisionIn 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
(Universitat Politècnica de Catalunya, 2017-01)
Bachelor thesis
Restricted access - author's decision
Covenantee: Xarxa Oberta de CatalunyaThe 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 ... -
Análisis y diseño de un radioenlace entre dos estaciones base con simulador de enlaces radio
(Universitat Politècnica de Catalunya, 2022-02-10)
Bachelor thesis
Open Access
Covenantee: ADTELNowadays, we live in an era that could be described by the advance of different technologies. Technologies that aim to improve the quality of the humanity life¿s. One of the most important objectives that are taken into ... -
Comportamiento de un circuito recuperador de portadora en presencia de una propagación multicamino para un radioenlace a 140Mb/s
(Unión Científica Internacional de Radio (URSI), 1983)
Conference report
Open AccessThis 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
(Universidad de Sevilla, 1984)
Conference report
Open AccessIn 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
(2011)
Conference report
Restricted access - publisher's policyA 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
(2012-09-20)
Article
Open AccessThe 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
(Universitat Politècnica de Catalunya, 2007-07-06)
Master thesis (pre-Bologna period)
Open AccessEls 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 ... -
Radio-over-Fiber data tranamission
(Universitat Politècnica de Catalunya, 2021-07-05)
Bachelor thesis
Open AccessIn recent years, a growing number of users require a fast wireless communication to access networks. This demand has had an impact on the increasing amount of radio-over-fiber solutions, as these provide a rapid, reliable ... -
Radioenlace digital a 11 GHz para telemando y telecontrol
(Institute of Electrical and Electronics Engineers (IEEE), 1984)
Conference report
Open AccessA 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
(Universitat Politècnica de Catalunya, 2018-07-03)
Bachelor thesis
Open AccessMuch 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
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open AccessThe 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
(Universitat Politècnica de Catalunya, 2018-07)
Bachelor thesis
Open AccessThe 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
(HINDAWI, 2011-02-27)
Article
Restricted access - publisher's policyWe 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. ...