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Sobre

Sobre

Sou investigador sénior no Centro de Telecomunicações e Multimédia do INESC TEC, e coordenador da área de tecnologia ótica e eletrónica. Concluí a licenciatura em 2006 e o doutoramento em 2011, ambos em Engenharia Electrotécnica e de Computadores, pela Faculdade de Engenharia da Universidade do Porto. Atualmente sou responsável pela conceção e gestão de projetos de I&D, orientação de alunos de mestrado/doutoramento e bolseiros de investigação, e por promover a valorização de resultados de investigação através de novos contratos com a indústria. Estive envolvido como professor assistente convidado da Universidade do Porto nas disciplinas de engenharia de rádio e microondas e comunicações óticas. Sou autor/co-autor de mais de 50 publicações em conferências e revistas internacionais com revisão por pares, e de uma patente europeia. Já coordenei vários projetos de investigação e participei em vários projetos europeus. Os meus principais interesses de investigação incluem sistemas óticos coerentes, rádio-sobre-fibra, dispositivos rádio/microondas e antennas, transferência de energia sem fios e comunicações subaquáticas.

Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    Luís Manuel Pessoa
  • Cargo

    Responsável de Área
  • Desde

    01 fevereiro 2006
024
Publicações

2024

Towards truly sustainable IoT systems: the SUPERIOT project

Autores
Katz, M; Paso, T; Mikhaylov, K; Pessoa, L; Fontes, H; Hakola, L; Leppaeniemi, J; Carlos, E; Dolmans, G; Rufo, J; Drzewiecki, M; Sallouha, H; Napier, B; Branquinho, A; Eder, K;

Publicação
JOURNAL OF PHYSICS-PHOTONICS

Abstract
This paper provides an overview of the SUPERIOT project, an EU SNS JU (Smart Networks and Services Joint Undertaking) initiative focused on developing truly sustainable IoT systems. The SUPERIOT concept is based on a unique holistic approach to sustainability, proactively developing sustainable solutions considering the design, implementation, usage and disposal/reuse stages. The concept exploits radio and optical technologies to provide dual-mode wireless connectivity and dual-mode energy harvesting as well as dual-mode IoT node positioning. The implementation of the IoT nodes or devices will maximize the use of sustainable printed electronics technologies, including printed components, conductive inks and substrates. The paper describes the SUPERIOT concept, covering the key technical approaches to be used, promising scenarios and applications, project goals and demonstrators which will be developed to the proof-of-concept stage. In addition, the paper briefly discusses some important visions on how this technology may be further developed in the future.

2023

Misalignment-Resilient Propagation Model for Underwater Optical Wireless Links

Autores
Araujo, JH; Tavares, JS; Marques, VM; Salgado, HM; Pessoa, LM;

Publicação
SENSORS

Abstract
This paper proposes a multiple-lens receiver scheme to increase the misalignment tolerance of an underwater optical wireless communications link between an autonomous underwater vehicle (AUV) and a sensor plane. An accurate model of photon propagation based on the Monte Carlo simulation is presented which accounts for the lens(es) photon refraction at the sensor interface and angular misalignment between the emitter and receiver. The results show that the ideal divergence of the beam of the emitter is around 15 degrees for a 1 m transmission length, increasing to 22 degrees for a shorter distance of 0.5 m but being independent of the water turbidity. In addition, it is concluded that a seven-lense scheme is approximately three times more tolerant to offset than a single lens. A random forest machine learning algorithm is also assessed for its suitability to estimate the offset and angle of the AUV in relation to the fixed sensor, based on the power distribution of each lens, in real time. The algorithm is able to estimate the offset and angular misalignment with a mean square error of 5 mm (6 mm) and 0.157 rad (0.174 rad) for a distance between the transmitter and receiver of 1 m and 0.5 m, respectively.

2023

Self-Localization via Circular Bluetooth 5.1 Antenna Array Receiver

Autores
Paulino, N; Pessoa, LM;

Publicação
IEEE ACCESS

Abstract
Future telecommunications aim to be ubiquitous and efficient, as widely deployed connectivity will allow for a variety of edge/fog based services. Challenges are numerous, e.g., spectrum overuse, energy efficiency, latency and bandwidth, battery life and computing power of edge devices. Addressing these challenges is key to compose the backbone for the future Internet-of-Things (IoT). Among IoT applications are Indoor Positioning System and indoor Real-Time-Location-Systems systems, which are needed where GPS is unviable. The Bluetooth Low Energy (BLE) 5.1 specification introduced Direction Finding to the protocol, allowing for BLE devices with antenna arrays to derive the Angle-of-Arrival (AoA) of transmissions. Well known algorithms for AoA calculation are computationally demanding, so recent works have addressed this, since the low-cost of BLE devices may provide efficient solutions for indoor localization. In this paper, we present a system topology and algorithms for self-localization where a receiver with an antenna array utilizes the AoAs from fixed battery powered beacons to self-localize, without a centralized system or wall-power infrastructure. We conduct two main experiments using a BLE receiver of our own design. Firstly, we validate the expected behaviour in an anechoic chamber, computing the AoA with an RMSE of 10.7 degrees conduct a test in an outdoor area of 12 by 12 meters using four beacons, and present pre-processing steps prior to computing the AoAs, followed by position estimations achieving a mean absolute error of 3.6 m for 21 map positions, with a minimum as low as 1.1 m.

2023

TEC4SEA-Developing maritime technology for a sustainable blue economy

Autores
Monica, P; Cruz, N; Almeida, JM; Silva, A; Silva, E; Pinho, C; Almeida, C; Viegas, D; Pessoa, LM; Lima, AP; Martins, A; Zabel, F; Ferreira, BM; Dias, I; Campos, R; Araujo, J; Coelho, LC; Jorge, PS; Mendes, J;

Publicação
OCEANS 2023 - LIMERICK

Abstract
One way to mitigate the high costs of doing science or business at sea is to create technological infrastructures possessing all the skills and resources needed for successful maritime operations, and make those capabilities and skills available to the external entities requiring them. By doing so, the individual economic and scientific agents can be spared the enormous effort of creating and maintaining their own, particular set of equivalent capabilities, thus drastically lowering their initial operating costs. In addition to cost savings, operating based on fully-fledged, shared infrastructures not only allows the use of more advanced scientific equipment and highly skilled personnel, but it also enables the business teams (be it industry or research) to focus on their goals, rather than on equipment, logistics, and support. This paper will describe the TEC4SEA infrastructure, created precisely to operate as described. This infrastructure has been under implementation in the last few years, and has now entered its operational phase. This paper will describe it, present its current portfolio of services, and discuss the most relevant assets and facilities that have been recently acquired, so that the research and industrial communities requiring the use of such assets can fully evaluate their adequacy for their own purposes and projects.

2023

Concept paper on novel radio frequency resistive switches

Autores
Kiazadeh A.; Deuermeier J.; Carlos E.; Martins R.; Matos S.; Cardoso F.M.; Pessoa L.M.;

Publicação
ACM International Conference Proceeding Series

Abstract
For reconfigurable radios where the signals can be easily routed from one band to another band, new radio frequency switches (RF) are a fundament. The main factor driving the power consumption of the reconfigurable intelligent system (RIS) is the need for an intermediate device with static power consumption to maintain a certain surface configuration state. Since power usage scales quadratically with the RIS area, there is a relevant interest in mitigating this drawback so that this technology can be applied to everyday objects without needing such a high intrinsic power consumption. Current switch technologies such as PIN diodes, and field effect transistors (FETs) are volatile electronic devices, resulting in high static power. In addition, dynamic power dissipation related to switching event is also considerable. Regarding energy efficiency, non-volatile radio frequency resistive switch (RFRS) concept may be better alternative solution due to several advantages: smaller area, zero-hold voltage, lower actuation bias for operation, short switching time, scalability and capable to be fabricated in the backend-of-line of standard CMOS process.

Teses
supervisionadas

2022

LazyFS: A file system for assessing applications data durability

Autor
João Pedro Rodrigues Azevedo

Instituição
UM

2022

Desenvolvimento de Uma Antena em Grafeno

Autor
Luís Pedro Silva Ermida Martins de Freitas

Instituição
UP-FEUP

2022

Novel Tools for Quantification and Automatic Classification of Behavior in Laboratory Animals - Advancing Computational Ethology

Autor
Ana Filipa Domingues Gerós

Instituição
UP-FEUP

2021

DESENVOLVIMENTO E INDUSTRIALIZAÇÃO DE UM MARCO PARA CONTENTORES ENTERRADOS DE RESÍDUOS

Autor
ANTÓNIO JORGE PINTO COSTA VASQUES

Instituição
IPP-ISEP

2021

CloudAnchor Smart Contracts

Autor
EDUARDO HENRIQUE CARPINTEIRO VASCO

Instituição
IPP-ISEP