Security of digital agriculture networks: LoRaWAN case study in Benin

2. Zero hunger9. Industry, innovation and infrastructure15. Life on lan

[Invited] Visible light communication challenges in the frame of smart cities

Visible Light Communication (VLC) is the family of telecommunication technologies that uses the visible range of the electromagnetic spectrum to send data. The main asset of this emerging technology is that a light can simultaneously illuminate and communicate. This technology is for now, only possible by using Light Emitting Diodes (LEDs) and can reach up to hundreds of Mbit/s bidirectional. Furthermore, thanks to the adoption of LED lighting by cities and for car lights, VLC is about to bring a lot of interconnectivity possibilities among devices in the city, making this latter smarter. Even though outdoor VLC is still in the research phase, the main promising applications foreseen by this technology are urban Li-Fi (Light Fidelity) to complement the Wi-Fi offer, VLC-IoT (Internet of Things) and V2X (Vehicle to Vehicle or Vehicle to Infrastructure). VLC-IoT is envisioned as a streetlight communicating with the surrounding urban furniture or a streetlight sending location-based content to a visitor located under its light beam. V2X is intended to communicate with each other and/or with the street infrastructure. In this way, VLC could reply to the lack of connectivity in some places and relieve the RF spectrum when it gets crowded. This work outlines and surveys the current state of Visible Light Communication in outdoor environments, its main challenges (mainly due to weather variability), the most promising outdoor applications and the still ongoing standardisation efforts in the context of Smart Cities.Wal-e-Cities - Région wallonn

Performance of new waveforms and non uniforms contellations applied to DVB-T2 transmissions

Appui à la mise en place d'un Master professionnalisant en photonique et en radiodiffusion numérique - PHORAN - Fédération Wallonie Bruxelle

Automated Guided Vehicle Controlled by Li-Fi: A Study Case

peer reviewed3253 - Wal-e-Cities - Wal-e-Cities - Région wallonn

Optimization of channel coding and modulation functions used in DVB-T2

Appui à la mise en place d'un Master professionnalisant en photonique et en radiodiffusion numérique - PHORAN - Fédération Wallonie Bruxelle

Low complexity demapping algorithms survey in DVB-T2: Rotated constellation case study

peer reviewedSignal Space Diversity (SSD) technique was adopted in Digital Video Broadcasting-Terrestrial, second generation (DVB-T2) standard ten years ago to increase system performance over fading channels. This technique consists of rotated and cyclic Q-delayed M-Quadrature Amplitude Modulation (QAM) and has been proposed without considering the complexity induced by the demapper. 'Genie Aided' demapping algorithm based on iterative demapping has been presented in DVB-T2 and lets this system approach the Shannon limit. Furthermore, this algorithm is not suitable for hardware implementation. Due to the complexity of the hardware implementation algorithms, the advantages of this rotated constellation have not been effectively exploited for network deployment. Moreover, receivers provided by manufacturers do not include suitable demappers when this technique is applied. Therefore, several low complexity algorithms have been proposed during the last decade in the scientific literature to reduce the number of metrics and operators used in the demapping process. This paper presents an exhaustive review of demappers proposed for DVB-T2 and all the low complexity demapping algorithms existing up to now in the literature that is suitable for hardware implementation. Details about these algorithms are given in terms of reduction, parameters, performance and percentage of reduction obtained.Appui à la mise en place d'un Master professionnalisant en photonique et en radiodiffusion numérique - PHORAN - Fédération Wallonie Bruxelle

Complexity analysis on 5G Candidate waveforms for DVB-T2: A survey

In this work, a literature review of filter-based waveforms proposed in the Digital Terrestrial Television (DTT) standard context improvement is presented. It also compares low complexity algorithms of Filter Bank Multicarrier (FBMC) and Universal Filtered Multicarrier (UFMC) applied to the next generation of Digital Video Broadcasting-Terrestrial, second generation (DVB-T2) system. As known, Orthogonal Frequency Division Multiplexing (OFDM) and both FBMC and UFMC have common characteristics like the use of Fast Fourier Transform (FFT) in their functional blocks diagram. However, the FBMC and UFMC are mainly based on different filtering operations, which induce a high implementation complexity but present a better performance in a broadcasting system when compared to the classical OFDM. Their computation complexity is studied to highlight the optimal low complexity algorithm. Furthermore, the compromise between FBMC and UFMC waveforms applied to DVB-T2 in terms of SNR performance gains, spectral efficiency, and complexity is established. This paper shows that UFMC is a good compromise as its complexity is reduced to the same complexity as OFDM while having advantages.Appui à la mise en place d'un Master professionnalisant en photonique et en radiodiffusion numérique - PHORAN - Fédération Wallonie Bruxelle

Possibility of making semiconductor-based sensors autonomous in energy by means of energy harvesting in a nuclear environment.

4539 - CDR-Dualibe - Energy Harvesting of Ionising Radiation - Fédération Wallonie Bruxelle