We present a device-free localization method oriented to Ambient Assisted Living applications. The system exploits the received signal strength (RSS) measured by fixed wireless communications devices, whose position is known a priori, in order to localize a person in the transmission coverage area. The proposed localization system is passive, by not requiring the user to wear anything, and is able to trade complexity for accuracy by simply changing the number of deployed devices. The presentation is validated by an indoor experimental study.


RSS-based localization AAL tracking 


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  1. 1.
    Barsocchi, P., Potortì, F., Furfari, F., Gil, A.M.M.: Comparing AAL indoor localization systems. In: Chessa, S., Knauth, S. (eds.) EvAAL 2011. CCIS, vol. 309, pp. 1–13. Springer, Heidelberg (2012)CrossRefGoogle Scholar
  2. 2.
    Salvi, D., Barsocchi, P., Arredondo, M.T., Ramos, J.P.L.: EvAAL, evaluating AAL systems through competitive benchmarking, the experience of the 1st competition. In: Chessa, S., Knauth, S. (eds.) EvAAL 2011. CCIS, vol. 309, pp. 14–25. Springer, Heidelberg (2012)CrossRefGoogle Scholar
  3. 3.
    Barsocchi, P., Lenzi, S., Chessa, S., Furfari, F.: Automatic virtual calibration of range-based indoor localization systems. Wireless Communications and Mobile Computing (2011)Google Scholar
  4. 4.
    Savazzi, S., Nicoli, M., Riva, M.: Radio imaging by cooperative wireless network: Localization algorithms and experiments. In: WCNC, pp. 2357–2361 (2012)Google Scholar
  5. 5.
    Wilson, J., Patwari, N.: Radio tomographic imaging with wireless networks. IEEE Trans. Mob. Comput. 9(5), 621–632 (2010)CrossRefGoogle Scholar
  6. 6.
    Crossbow Technology Inc.: Iris crossbow data sheetGoogle Scholar
  7. 7.
    Wilson, J., Patwari, N.: Spin: A token ring protocol for RSS collectionGoogle Scholar
  8. 8.
    Wilson, J., Patwari, N.: See-through walls: Motion tracking using variance-based radio tomography networks. IEEE Trans. Mob. Comput. 10(5), 612–621 (2011)CrossRefGoogle Scholar

Copyright information

© ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering 2013

Authors and Affiliations

  • Paolo Barsocchi
    • 1
  • Francesco Potortì
    • 1
  • Paolo Nepa
    • 2
  1. 1.Pisa Research AreaISTI-CNRPisaItaly
  2. 2.Department of Information EngineeringUniversity of PisaPisaItaly

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