Nuno Teixeira Almeida

Domains

Telecommunications and Multimedia Communications

Projects

WI-GREEN

Wi-Green project is part of the SooGreen CELTIC-Plus European project. As the traffic volume in mobile networks has been growing exponentially, especially with the emergence of new mobile services and applications. The advent of the Internet of Things (IoT) will exacerbate the problem, especially when a very large number of devices is expected to be connected to the network. These factors limit the capacity of the cellular networks and force telecom operators to look for new solutions. Wi-Fi networks are one of the solutions to the problem, allowing the cellular network operator to offload traffic to Wi-Fi networks especially in indoors, where users spend more than 80% of their time. The Wi-Green project aims to develop new solutions to reduce the energy consumption of Wi-Fi by addressing the component mostly ignored so far - the access points (APs) - and taking into account the duty cycles of the network. Project Datasheet

TERAPOD

The saturation of wireless spectrum access is leading to innovations in areas such as spectrum resource usage. It is widely thought however that the low hanging fruits of innovation for wireless communication are all but exploited with only marginal gains possible. For a real step change towards the coveted 1 Tbps wireless transmission, new areas of the spectrum must be utilized. Recent breakthroughs in terahertz systems are overturning the “terahertz gap” stigma associated with the previously difficult to access spectrum. With the emergence of viable THz communications systems on the horizon, it is crucial to develop a technology roadmap for THz communication for beyond the 5G timeframe. The aim of TERAPOD is to investigate and demonstrate the feasibility of ultra high bandwidth wireless access networks operating in the Terahertz band. The project will focus on end to end demonstration of the THz wireless link within a Data Centre Proof of Concept deployment, while also investigating other use cases applicable to beyond 5G such as wireless personal area networks, wireless local area networks and high bandwidth broadcasting. The project seeks to bring THz communication a leap closer to industry uptake through leveraging recent advances in THz components, a thorough measurement and characterization study of components and devices, coupled with specification and validation of higher layer communication protocol specification.

Terahertz based Ultra High Bandwidth Wireless Access Networks

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Publications

Incremental Redundancy HARQ Communication Schemes applied to Energy Efficient IoT Systems

Silva, SM;Almeida, T;

2024

2024 IEEE 22nd Mediterranean Electrotechnical Conference, MELECON 2024

A novel approach to ARQ error control mechanisms for wireless LANs communications

Almeida, NT;Abrantes, SA;

2000

25TH ANNUAL IEEE CONFERENCE ON LOCAL COMPUTER NETWORKS - PROCEEDINGS

Linux software and Bluetooth: a formula to improve accessibility by using Interactive Voice Response systems

Almeida, NT;Ribeiro, E;

2009

DSAI 2009: PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON SOFTWARE DEVELOPMENT FOR ENHANCING ACCESSIBILITY AND FIGHTING INFO-EXCLUSION

High-speed wireless LANs: Modeling and simulation of enhanced ARQ strategies

Almeida, NT;

2004

8TH WORLD MULTI-CONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL III, PROCEEDINGS: COMMUNICATION AND NETWORK SYSTEMS, TECHNOLOGIES AND APPLICATIONS

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Supervised theses

Ferramenta para Desenvolvimento de Inteligência em Jogos Simulados em ambiente Simtwo

André Filipe de Domingues e Silva

M - 2019

UP-FEUP