• Home
  • KU Leuven
  • Research group for Telecommunications and Microwaves (TELEMIC)
  • Rodney Martinez Alonso
Rodney Martinez Alonso

Rodney Martinez Alonso
KU Leuven | ku leuven · Research group for Telecommunications and Microwaves (TELEMIC)

Doctor of Engineering
Dynamic Spectrum Access networks optimization by Artificial Intelligence

About

27
Publications
3,921
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
93
Citations
Additional affiliations
October 2016 - present
Ghent University
Position
  • PhD Student
September 2010 - present
LACETEL
Position
  • Research Assistant
Education
January 2013 - January 2015
September 2005 - July 2010
Universidad Tecnológica de la Habana, José Antonio Echeverría
Field of study
  • Telecommunications and Electronics Engineering

Publications

Publications (27)
Article
Full-text available
Accurate wireless network planning is crucial for the deployment of new wireless services. This usually requires the consecutive evaluation of many candidate solutions, which is only feasible for simple path loss models, such as one-slope models or multi-wall models. However, such path loss models are quite straightforward and often do not deliver...
Article
Despite the recent advances in broadband penetration and accessibility, broadcasting networks continue to be the most efficient way for delivering media content to large areas independently of the user density. Nevertheless, a convergence of broadcasting services into the broadband networks is foreseen. In this context, Layered Division Multiplexin...
Article
LTE-eMBMS systems efficiently deliver multicast/broadcast services using Layered Division Multiplexing (LDM) technology. In a two-layer LDM system, Layer 1, with higher power allocation delivers mobile services, and Layer 2 in a Single Frequency Network scheme provides local content. The challenge is to reduce the gap in the layers' coverage areas...
Experiment Findings
Spectrum survey for collecting spatial utilization of spectrum data in rural areas. The collected data include the geolocation GPSx, GPSy, Frequency and Signal Level. The AI uses as inputs the geolocation and frequency data and as output the signal level and estimation of spectrum availability based on a certain threshold. The effect of hidden node...
Article
New generation networks, based on Cognitive Radio technology, allow dynamic allocation of the spectrum, alleviating spectrum scarcity. These networks also have a resilient potential for dynamic operation for energy saving. In this paper, we present a novel wireless network optimization algorithm for cognitive radio networks based on a cloud sharing...
Preprint
Spectrum is a valuable resource for broadcasting and wireless communications. Despite the fact that most of the sub-1-GHz spectrum is granted, spectrum surveys in suburban areas reveal a poor usage efficiency (less than 20% on average). Cognitive Radio for 5G next generation radio is a potential technology for dynamically exploit the spectrum white...
Preprint
Spectrum scarcity has become a challenge for the growing demand of wireless services. Paradoxically, although most of the sub-1-GHz spectrum is assigned it is underutilized in the space and time domain. Several surveys demonstrate a spectrum usage efficiency lower than 20%. Cognitive Radio technologies has been proposed as a long-term solution for...
Article
Full-text available
In this paper, we investigate the coexistence of cognitive radio networks on TV white spaces for rural and suburban connectivity. Although experimental models and laboratory measurements defined the maximum interference threshold for TV white space technologies for general use cases, our research found that in real wireless rural and suburban scena...
Article
Full-text available
This paper is the design of a Radio Environment Map (REM) with a real-time tool to sense the radiofrequency spectrum and optimally places with Surrogate Modelling and Sequential Experimental Design tools a total of 72 SDR sensors in the selected area, using LoRa and/or NB-IoT technologies for networking. It permits the regulatory body to check the...
Article
Full-text available
We investigate the feasibility of Internet of Things (IoT) technology to monitor and improve the energy efficiency and spectrum usage efficiency of broadcasting networks in the Ultra-High Frequency (UHF) band. Traditional broadcasting networks are designed with a fixed radiated power to guarantee a certain service availability. However, excessive f...
Conference Paper
The environmental footprint of Information and Communication Technologies (ICT) has become a worldwide concern. To achieve environmental-friendly wireless network design, the necessity of network optimization towards minimal power consumption and minimum exposure of humans beings arises. In this paper, we investigate the trade-off between power con...
Article
The radio spectrum is a limited resource. Demand for wireless communication services is increasing exponentially, stressing the availability of radio spectrum to accommodate new services. TV white space (TVWS) technologies allow a dynamic usage of the spectrum. These technologies provide wireless connectivity, in the channels of the very high frequ...
Conference Paper
This paper comprises the design of a Digital Frequency Up-converter for DTMB Modulator. It was implemented based on Direct to RF synthesis method. Furthermore, a comparison is performed among the up-converters architectures Zero-IF, Complex-IF (intermediate frequency) and Real-IF and Direct to RF Synthesis. The results validate the benefits of the...
Article
Full-text available
ABSTRACT To define quality of a modulation system, the Modulation Error Ratio (MER) is one of the most important parameters. Therefore, it is particularly important on Terrestrial Digital Television (TDT). In this paper was conducted a summary of the theoretical basis of the MER. It describe a system that make possible a controlled way to intervene...
Article
The deployment of Digital Terrestrial Television is an essential project of social infrastructure creation. It intends to improve people's standard of living by introducing a state-of-the-art technology. Worldwide, the technological change of Analog Television into Terrestrial Digital Television started since 1998. It's an inevitable change that ea...
Conference Paper
The technological change in terrestrial television broadcast from Analog to Digital started in 1998. It's an inevitable change that each country has to face as part of the digitizing process that already has been taking place in many other services. Cuba adopted DTMB (GB 20600-2006) standard for Digital Terrestrial Television Broadcasting with 6MHz...
Conference Paper
Full-text available
En el presente documento se presenta la tecnología de lazo de división fraccional DDS-PLL, enfatizando en la estructura del Sintetizador Digital Directo (DDS, siglas en inglés) y su funcionamiento en el lazo de división fraccional de un PLL (del inglés Phase-Locked Loop) con el objetivo de disminuir el nivel de ruido a la salida del lazo. Finalment...
Conference Paper
Full-text available
The migration from analogue to digital TV brings benefit more efficient use of radio spectrum, higher quality picture and sound and the emergence of new services. As several channels with compressed video are transmitted, together with these new services, higher transmission rates and the preservation of spectral efficiency are required. Because of...
Conference Paper
Worldwide, the technological change of Analog Television into Terrestrial Digital Television started since 1998. It's an inevitable change that each country has to face and which is part of the digitizing process that already has taken place in many other technologies. In order to determine the most convenient standard for Cuba, and technological i...

Network

Cited By

Projects

Projects (3)
Project
Coexisting Wireless Cognitive-Broadcasting networks will be designed, enabling a truly cost effective solution for internet access in developing countries like Cuba. The design will use appropriate metric(s) to realize low cost, energy efficiency and optimal spectrum usability. A network planning tool for these optimizations will be developed to grant certain capacity and user density coverage at minimum cost.