Recent Submissions

  • IoT-based surveillance camera distribution using triangle geometry 

    Almalkawi, Islam; Al-Abed, Loiy; Al-Karaki, Jamal N.; Guerrero Zapata, Manel (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference lecture
    Open Access
    IoT systems provide excellent solutions to many applications in both civilian and military aspects. This is even facilitated by the advent of many types of cameras with the diminishing cost of communication devices. We ...
  • Property rights in servitisation: a practical assessment with reused computers 

    Roura Salietti, Mireya; Navarro Moldes, Leandro; Meseguer Pallarès, Roc (Springer, 2022)
    Conference report
    Open Access
    The circular economy of computers is about producing fewer, more durable and reusable products while investing in expanding their life span through a functional service economy. Reuse is often mentioned as a sustainable ...
  • Integrating a neural network library in embedded federated learning 

    Aatab, Soufiane; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Open Access
    Federated learning has become a popular collaborative machine learning approach in which clients use their local data for training. This results in bandwidth savings since the training data does not have to be transferred ...
  • Stateful adaptive streams with approximate computing and elastic scaling 

    Francisco, João; Coimbra, Miguel E.; Neto, Pedro F.; Freitag, Fèlix; Veiga, Luis (Association for Computing Machinery (ACM), 2023)
    Conference lecture
    Open Access
    The model of approximate computing can be used to increase performance or optimize resource usage in stream and graph processing. It can be used to satisfy performance requirements (e.g., throughput, lag) in stream processing ...
  • Exploring blockchain-based management for LoRa IoT nodes 

    Cruz Harillo, Eloi; Freitag, Fèlix (Springer, 2023)
    Conference report
    Open Access
    We consider open IoT applications in which the IoT devices, i.e. sensor nodes and gateways, can be contributed by volunteer participants. Since the contribution of sensor deployments and their data is critical for the value ...
  • Robust proxy sensor model for estimating black carbon concentrations using low-cost sensors 

    Paredes Ahumada, Juan Antonio; Ferrer Cid, Pau; Barceló Ordinas, José María; García Vidal, Jorge; Reche Andúgar, Cristina; Viana Rodríguez, Mar (Association for Computing Machinery (ACM), 2023)
    Conference lecture
    Open Access
    Air quality monitoring sensor networks focusing on air pollution measure pollutants that are regulated by the authorities, such as CO, NO2, NO, SO2, O3, and particulate matter (PM10, PM2.5). However, there are other ...
  • Circular consumption and production of electronic devices: an approach to measuring durability, upgradeability, reusability, obsolescence and premature recycling 

    Franquesa Griso, David; Navarro Moldes, Leandro; Fortelny, Stephan; Roura Salietti, Mireia; Nadeu Ferran, Jordi (Institut universitari de recerca en Ciència i Tecnologies de la Sostenibilitat (ISST.UPC), 2019)
    Conference report
    Open Access
    What is circular consumption of electronics? Is it measurable? Can we set goals or compare with other consumers? A principle of circular economy is durability, prolonging the useful life of products. If we move the principle ...
  • Comparison of two microcontroller boards for on-device model training in a keyword spotting task 

    Llisterri i Giménez, Nil; Freitag, Fèlix; Lee, JunKyu; Vandierendonck, Hans (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    Machine learning applications on resource-constrained devices such as microcontroller units often use models trained externally on more powerful devices. This approach, however, limits a later adaptation of the machine ...
  • LoRaCoin: Towards a blockchain-based platform for managing LoRa devices 

    Cruz Harillo, Eloi; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference lecture
    Open Access
    We propose LoRaCoin, a decentralized blockchainbased service to manage the generation and storage of sensor data generated by IoT devices. A novel feature of LoRaCoin is that it rewards both IoT devices that generate data ...
  • Towards a monitoring system for a LoRa mesh network 

    Capella del Solar, Alejandro Jesús; Miquel Solé, Joan; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference lecture
    Open Access
    LoRa is a popular communication technology used in Internet of Things (IoT) applications. Typically, in the LoRaWAN architecture, an end node periodically sends a LoRaWAN message to a gateway connected to the Internet. ...
  • Demonstration of a library prototype to build LoRa mesh networks for the IoT 

    Miquel Solé, Joan; Miralles Nogués, Sergi; Pueyo Centelles, Roger; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    LoRa has become popular in the Internet of Things (IoT) domain as a Low Power, Wide Area Network (LPWAN) radio technology providing low-power and long-range communication. In a typical IoT application, the LoRaWAN architecture ...
  • A realistic open-data-based cost model for wireless backhaul networks in rural areas 

    Gemmi, Gabriele; Cerdà Alabern, Llorenç; Maccari, Leonardo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    Broadband Internet provision is an increasing demand in many rural areas and wireless internet service providers have emerged as an opportunity to fill this need. However, this type of operator typically consists of a small ...

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