Browsing by Subject "Ràdio definida per programari"
Now showing items 1-20 of 40
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A deep reinforcement learning approach for optimization and task-offloading of mobile edge computing in virtual radio access networks
(Universitat Politècnica de Catalunya, 2020-10-15)
Master thesis
Open Access
Covenantee: Technische Universiteit EindhovenMobile systems are increasing in number and, in the future, exponential growth is expected with the deployment of new technologies like 5G and Internet of Things. Requirements from those technologies lead to an improvement ... -
A multi-frequency SDR-based GBSAR: System overview and first results
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-21)
Article
Open AccessThis work describes a system-level overview of a multi-frequency GBSAR built around a high performance software defined radio (SDR). The main goal of the instrument is to be employed as a demonstrator and experimental ... -
A new vision of software defined radio: from academic experimentation to industrial explotation
(Universitat Politècnica de Catalunya / Università degli Studi de Trento, 2011)
Master thesis (pre-Bologna period)
Open AccessThe broad objective of this study is to examine the role of Software Defined Radio in an industrial field. Basically examines the changes that have to be done to achieve moving this technology in a commercial domain. It ... -
A radio spectrum measurement platform for spectrum surveying in cognitive radio
(2011)
Conference report
Restricted access - publisher's policyThis paper presents a sophisticated radio spectrum measurement platform specifically envisaged and designed for spectrum occupancy surveys in the context of Dynamic Spectrum Access/Cognitive Radio (DSA/CR). The presented ... -
A software radio challenge accelerating education and innovation in wireless communications
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference lecture
Restricted access - publisher's policyThis Innovative Practice Full Paper presents our methodology and tools for introducing competition in the electrical engineering curriculum to accelerate education and innovation in wireless communications. Software radio ... -
Cosmic Call Tech – A hands-on space radio workshop for students in secondary education
(Universitat Politècnica de Catalunya, 2022-04-29)
Conference lecture
Open AccessThe DLR_School_Lab Braunschweig, Germany, organized an amateur radio contact with an astronaut on board the International Space Station (ISS) for students from five different schools for the third time. While the contact ... -
Defining a network management architecture
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyThis work proposes an algorithm called k-Critical Node to solve the controller placement problem in Software Defined Networks. K-Critical finds the minimum number of controllers to satisfy a target communication delay ... -
Diseño y realización de una radio definida por software
(Universitat Politècnica de Catalunya, 2023-07-11)
Bachelor thesis
Open AccessUna radio definida por software es un dispositivo que, en lugar de decodificar las señales de radio mediante circuitos electrónicos específicos, utiliza el procesamiento digital de señales. El propósito de este proyecto ... -
Dynamic resource allocation in software-defined radio - The interrelation between platform architecture and application mapping
(2006-09)
Article
Open Access -
Empirical Time-Dimension Model of Spectrum Use Based on a Discrete-Time Markov Chain With Deterministic and Stochastic Duty Cycle Models
(2011-07)
Article
Restricted access - publisher's policyThe spectrum occupancy models widely used to date in dynamic spectrum access/cognitive radio (DSA/CR) research frequently rely on assumptions and oversimplifications that have not been validated with empirical measurement ... -
Evaluación de una estación base LTE basado en software
(Universitat Politècnica de Catalunya, 2016-07-04)
Master thesis (pre-Bologna period)
Open AccessIn the early 90s, the GSM standard was introduced in Europe with an important carrier-side investment in order to deliver a digital service to the home user. Back then there was no functionality bundling in contrast to the ... -
Implementació d'una SDR (Software Defined Radio) sobre Raspberry PI
(Universitat Politècnica de Catalunya, 2018-10-29)
Bachelor thesis
Restricted access - author's decision -
Implementation of the Physical Random Access Channel in TDD-LTE using Software Defined Radio
(Universitat Politècnica de Catalunya, 2016-02-08)
Bachelor thesis
Open Access
Covenantee: Aalto-yliopisto. Sähkötekniikan korkeakouluIn Long Term Evolution (LTE) uplink transmission, a User Equipment (UE) must be time-synchronized before normal data transmission. So that a Physical Random Access Channel (PRACH) becomes a crucial factor for LTE access ... -
Interference management in cognitive radio systems
(Universitat Politècnica de Catalunya, 2011-03-04)
Master thesis
Open AccessCurrently, the radio spectrum is beginning to be crowded due to the rapid growth of wireless technologies this century. However, many studies show that the major licensed bands, such as those allocated for television ... -
Joint learning-detection framework: an empirical analysis
(2011)
Conference report
Restricted access - publisher's policyWithin a context of Cognitive Radio, we explore the possibility to detect the presence of users on a given band with no a priori knowledge on the environment. This paper ventures the analysis of a joint learning-detection ... -
LTE downlink physical layer processing chain SDR application acceleration with GPUs
(Universitat Politècnica de Catalunya, 2012-07-13)
Bachelor thesis
Open AccessThe technology moves fast and the wireless systems tend to be software defined radio (SDR). The new wireless standards increase the efficiency of communications, also its complexity, which demand more processing. The ... -
Machine learning techniques applied to multiband spectrum sensing in cognitive radios
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-10-30)
Article
Open AccessIn this work, three specific machine learning techniques (neural networks, expectation maximization and k-means) are applied to a multiband spectrum sensing technique for cognitive radios. All of them have been used as a ... -
Modeling and simulation of joint time-frequency properties of spectrum usage in cognitive radio
(2011)
Conference report
Restricted access - publisher's policyThe development of the Dynamic Spectrum Access/Cogni- tive Radio (DSA/CR) technology can signi cantly bene t from the availability of realistic models able to accurately capture and reproduce the statistical properties ... -
Multiantenna spectrum sensing exploiting spectral a priori information
(2011-12)
Article
Restricted access - publisher's policyDynamic Spectrum Access (DSA) is receiving considerable interest as a means to improve spectral usage in licensed bands. In order to avoid interference to licensed users, spectrum sensing has emerged as an enabling technology ... -
On the spectrum occupancy perception of cognitive radio terminals in realistic scenarios
(2010)
Conference report
Restricted access - publisher's policyCognitive radio terminals sense the spectrum to detect temporarily unoccupied spectrum gaps and transmit. The behavior of a network of cognitive radio terminals therefore depends on the spectrum occupancy perceived by ...