Exploració per tema "Wireless sensor networks"

Ara es mostren els items 109-128 de 200

    • Joint power-QoS control scheme for energy harvesting body sensor nodes 

      Ibarra, Ernesto; Antonopoulos, Angelos; Kartsakli, Elli; Rodrigues, Joel; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, we aim at the optimal use of the scarce energy collected by a node powered by human energy harvesting in order to improve the provided Quality of Service (QoS). To achieve this goal, we have developed a ...

    • Localizability testing for wireless sensor networks localization algorithm 

      Lineo Hurtado, Iker (Universitat Politècnica de Catalunya, 2015-09-18)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Technische Universität Chemnitz
      The main goal of this bachelor thesis is to study different types of network deployments in Wireless Sensor Networks and improve one existing deployment, providing new enhancements and new concepts trying to reduce as much ...

    • Localización de nodos dentro de una red inalámbrica de sensores 

      Herrero García, Alberto (Universitat Politècnica de Catalunya, 2009-06-23)
      Treball Final de Grau
      Accés obert

    • Long-term continuous ambulatory ECG monitor with Beat-to-Beat Heart Rate Measurement in Real Time using ESP32 

      Martínez Suárez, Frank; García Limón, José Alberto; Rivera Córdova, Dalila; Flores Nuñez, Laura; Casas Piedrafita, Óscar; Alvarado Serrano, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      This work presents a long-term continuous ambulatory ECG monitor for simultaneous acquisition and storage of leads DI, aVF, and V2, and beat-to-beat R wave detection using wavelet transform for heart rate measurement in ...

    • Low Power WiFi: a study on power consumption for Internet of Things 

      Amozarrain Perez, Ugaitz (Universitat Politècnica de Catalunya, 2015-02-02)
      Projecte Final de Màster Oficial
      Accés obert
      An analysis of a Low-Power WiFi devices and the feasibility of using such a device for Internet of Things applications, for wireless sensor networks more specifically. The device is analyzed in power consumption and performance.

    • Low-power low-rate goes long-range: the case for secure and cooperative machine-to-machine communications 

      Bartoli, Andrea; Dohler, Mischa; Hernández Serrano, Juan; Kountouris, Apostolous; Barthel, Dominique (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The vision of connecting a large amount of objects on this planet to improve well-being and safety is slowly taking shape. Preceded by a decade-long era of research on low-power low-rate short-range wireless sensor networks, ...

    • Low-rank data matrix recovery with missing values and faulty sensors 

      Lopez Valcarce, Roberto; Sala Álvarez, José (2019)
      Comunicació de congrés
      Accés obert
      In practice, data gathered by wireless sensor networks often belongs in a low-dimensional subspace, but it can present missing as well as corrupted values due to sensor malfunctioning and/or malicious attacks. We study the ...

    • MAC protocols for wireless sensor networks: a survey 

      Demirkol, Ilker Seyfettin; Ersoy, Cem; Alagoz, Fatih (2006-04)
      Article
      Accés restringit per política de l'editorial
      Wireless sensor networks are appealing to researchers due to their wide range of application potential in areas such as target detection and tracking, environmental monitoring, industrial process monitoring, and tactical ...

    • Mean square convergence of consensus algorithms in random WSNs 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2010-05)
      Article
      Accés obert
      Distributed consensus algorithms for estimation of parameters or detection of events in wireless sensor networks have attracted considerable attention in recent years. A necessary condition to achieve a consensus on the ...

    • MIMO radar antenna with sectorial human torso illumination for an in-cabin breathing detection system 

      López Montero, María José; Palacios Arias, César Augusto; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Text en actes de congrés
      Accés obert
      The vital sign measurement systems inside vehicles have taken great or impulse in recent years, and the technologies that have been most welcomed are based on wireless measurements that do not interrupt driving and are ...

    • Modeling the network convergence time in RPL in error-prone, IEEE 802.15.4 chain topology multihop networks 

      Kermajani, Hamidreza; Gómez Montenegro, Carlos (2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper presents an analytical model for estimating the network convergence time of IPv6 Routing Protocol for Low-power and Lossy Networks (RPL) in a static chain topology network of IEEE 802.15.4 nodes, in the presence ...

    • Monitorización de datos con módulos de radiofrecuencia de bajo consumo en el ámbito agrícola 

      Ferrer Riverola, Álvaro (Universitat Politècnica de Catalunya, 2018-07-09)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      [CASTELLÀ] En este proyecto se pretende diseñar, implementar y realizar el montaje de una pequeña WSN (Wireless Sensor Network) de dos nodos bajo el concepto de low-cost. Se aspira a conseguir un producto que sea capaz de ...

    • NLOS mitigation based on TOA for mobile subscriber positioning systems by weighting measures and geometrical restrictions 

      René Jativa, E.; Sanchez, David; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper studies the Non-Line-Of-Sight condition mitigation issue in mobile subscriber positioning systems by weighting Time-Of-Arrival measures and applying geometrical estrictions. Particularly, this work departs from ...

    • Node clustering based on overlapping FoVs for wireless multimedia sensor networks 

      Alaei, Mohammad; Barceló Ordinas, José María (2010)
      Text en actes de congrés
      Accés obert
      Wireless Multimedia Sensor nodes sense areas that are uncorrelated to the areas covered by radio neighbor sensors. Thus, node clustering for coordinating multimedia sensing and processing cannot be based on classical sensor ...

    • Nodo autónomo para la mesura de CO2 

      Aparicio León, Carlos (Universitat Politècnica de Catalunya, 2010-09-20)
      Treball Final de Grau
      Accés obert

    • On the impact of correlated sampling processes in WSNs with energy-neutral operation 

      Matamoros, Javier; Calvo-Fullana, Miguel; Antón-Haro, Carles (Institute of Electrical and Electronic Engineers, 2015-06-12)
      Comunicació de congrés
      Accés obert
      In this paper, we consider a communication scenario where multiple EH sensor nodes collect correlated measurements of an underlying random field. The nodes operate in an energy-neutral manner (i.e. energy is used as soon ...

    • On-chip adaptive power management for WPT-Enabled IoT 

      Abdelhameed, Mohamed Ahmed Saad (Universitat Politècnica de Catalunya, 2018-06-13)
      Tesi
      Accés obert
      Internet of Things (IoT), as broadband network connecting every physical objects, is becoming more widely available in various industrial, medical, home and automotive applications. In such network, the physical devices, ...

    • Optimal data compression for lifetime maximization in wireless sensor networks operating in stealth mode 

      Incebacak, Davut; Zilan, Ruken; Tavli, Bulent; Barceló Ordinas, José María; García Vidal, Jorge (Elsevier, 2015-01)
      Article
      Accés obert
      Contextual privacy in Wireless Sensor Networks (WSNs) is concerned with protecting contextual information such as whether, when, and where the data is collected. In this context, hiding the existence of a WSN from adversaries ...

    • Optimal Placement of Wireless Nodes in Underwater Wireless Sensor Networks with Shadow Zones 

      Domingo Aladrén, Mari Carmen (2009-12-14)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Shadow zones in Underwater Wireless Sensor Networks (UWSNs) dramatically impact communication system performance. In this paper an adaptive topology reorganization scheme has been proposed that is able to maintain ...

    • Optimizing MAC layer performance based on a distributed queuing protocol for wireless sensor networks 

      Begonya, Otal; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper analyzes the performance of a MAC scheme for low-rate wireless sensor networks that makes use of distributed queues to improve radio channel utilization. Analytical values first for the throughput performance, ...