Now showing items 1-16 of 16

    • A ranging method with IEEE 802.11 data frames for indoor localization 

      Ciurana Adell, Marc; Barceló Arroyo, Francisco; Izquierdo Moreno, Fernán (IEEE, 2007-03-15)
      Conference lecture
      Open Access
      IEEE 802.11 networks constitute a suitable infrastructure for accurate indoor positioning. However, existing approaches based on fingerprinting present drawbacks that make them not suitable for most of applications. This ...
    • Collaborative positioning in ad hoc networks using passive time-differences of arrival 

      Martín Escalona, Israel; Barceló Arroyo, Francisco; Zola, Enrica Valeria; Ciurana Adell, Marc (Bentham Science Publishers, 2015-04-08)
      Article
      Restricted access - publisher's policy
      Accuracy and scalability contribute to the quality of location solutions in wireless networks. While accuracy is a parameter addressed in all location technologies, scalability is often relegated. However, scalability ...
    • Comparative performance evaluation of IEEE 802.11v for positioning with time of arrival 

      Ciurana Adell, Marc; Barceló Arroyo, Francisco; Martín Escalona, Israel (2011-03)
      Article
      Restricted access - publisher's policy
      Time of Arrival (TOA) based techniques are expected to overcome performance limitations of existing WLAN positioning approaches. The upcoming IEEE 802.11v standard is expected to play a key role because it will include new ...
    • Contributions to TOA-based location with wlan 

      Ciurana Adell, Marc (Universitat Politècnica de Catalunya, 2010-07-15)
      Doctoral thesis
      Open Access
      Location techniques that satisfy the requirements of advanced Location-Based Services (LBS) in environments where GPS fails are needed, therefore accurate indoor positioning is becoming increasingly important. This PhD ...
    • Enhanced vehicle navigation unit with wifi 802.11 ranging and communication capabilities 

      Tappero, Fabrizio; Ciurana Adell, Marc; Batlle, Jordi; Uijt de Haag, M.; Martín Escalona, Israel; Fernández Fernández, Daniel (2012)
      Conference report
      Restricted access - publisher's policy
      This paper discusses the implementation of a modified IEEE 802.11 transceiver that is employed to enhance the positioning capabilities of a traditional vehicle on-board navigation unit (OBU). In this paper, we propose ...
    • Fusion of WLAN and GNSS observables for positioning in urban areas: the position ambiguity 

      Fernández, Daniel; Barceló Arroyo, Francisco; Martín Escalona, Israel; Ciurana Adell, Marc; Jofre, Martí; Gutiérrez, Esteban (2011)
      Conference report
      Restricted access - publisher's policy
      This paper proposes a positioning method that combines GPS pseudoranges and WLAN ranges when less than four GPS satellites are within sight. To enhance the positioning availability, a tight hybridization approach with both ...
    • Impacto del modelo de error en distancia en la simulación de sistemas de localización 

      Guardiola, Salvador; Martín Escalona, Israel; Barceló Arroyo, Francisco; Ciurana Adell, Marc (2010)
      Conference lecture
      Open Access
      Las redes inalámbricas han favorecido enormemente el interés de los usuarios, proveedores de servicio y operadores de red en el posicionamiento geográfico. Como consecuencia, se han propuesto mecanismos en la mayor parte ...
    • Indoor tracking in WLAN location with TOA measurements 

      Ciurana Adell, Marc; Barceló Arroyo, Francisco; Cugno, Sebastiano (ACM, 2006-10-01)
      Conference report
      Open Access
      Authors presented recently an indoor location technique based on Time Of Arrival (TOA) obtained from Round-Trip-Time (RTT) measurements at data link level and trilateration. This new approach uses the existing IEEE 802.11 ...
    • Middleware for positioning in cellular networks 

      Martín Escalona, Israel; Barceló Arroyo, Francisco; Ciurana Adell, Marc (2011-04-23)
      Part of book or chapter of book
      Restricted access - author's decision
    • On the Resolution of position ambiguity when integrating GNSS and WLAN observables 

      Fernández, Daniel; Ciurana Adell, Marc; Jofre, Martí; Gutiérrez, Esteban; Chester, Ed; Barceló Arroyo, Francisco; Martín Escalona, Israel (2010)
      Conference report
      Restricted access - publisher's policy
      This contribution proposes a positioning system that fuses GPS pseudoranges and WLAN ranges when fewer than four GPS satellites are available. In order to enhance as much as possible the positioning availability, a tight ...
    • Performance evaluation of a TOA-based trilateration method to locate terminals in WLAN 

      Izquierdo Moreno, Fernán; Ciurana Adell, Marc; Barceló Arroyo, Francisco; Paradells Aspas, Josep; Zola, Enrica Valeria (IEEE, 2006-01)
      Conference report
      Open Access
    • Performance of a time-of-arrival technique for positioning WLAN terminals 

      Izquierdo, F; Ciurana Adell, Marc; Barceló Arroyo, Francisco; Paradells Aspas, Josep (2006-06-30)
      Conference report
      Open Access
      Nowadays, several systems are available for outdoor location (i.e GPS, cellular networks based…). However, there is no proper location system for indoor scenarios. The technique presented in this paper proposes the use of ...
    • Performance stability of software ToA-based ranging in WLAN 

      Ciurana Adell, Marc; Giustiniano, Domenico; Neira, Albert; Barceló Arroyo, Francisco; Martín Escalona, Israel (2010)
      Conference report
      Restricted access - publisher's policy
      This article proposes a set of strategies to improve the performance stability and reliability of purely software ToA-based ranging with off-the-shelf WLAN equipment. Taking as starting point the core design lines proposed ...
    • Positioning terminals in mobile computing networks 

      Barceló Arroyo, Francisco; Martín Escalona, Israel; Ciurana Adell, Marc (2013-03-27)
      Article
      Open Access
    • Sistema de geolocalització de vehicles indoor / outdoor 

      Ciurana Adell, Marc (Universitat Politècnica de Catalunya, 2014-12)
      Master thesis (pre-Bologna period)
      Restricted access - confidentiality agreement
    • SofTOA: software ranging for TOA-based positioning of WLAN terminals 

      Ciurana Adell, Marc; López Bueno, David; Barceló Arroyo, Francisco (Springer Verlag, 2009)
      Conference report
      Restricted access - publisher's policy
      TOA-based trilateration constitutes an interesting choice to locate terminals employing WLAN networks. A major limitation of this technique is the requirement for hardware modifications in the WLAN device in order to achieve ...