Three-dimensional indoor light positioning algorithm based on nonlinear estimation

Wenjun Gu, Mohsen Kavehrad, Mohammadreza Aminikashani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations


With the development of location based services (LBS), indoor positioning has been a popular research topic in recent years. Since global positioning system (GPS) signal suffers from severe attenuation when penetrating through solid walls, other alternatives are proposed to realize indoor positioning. Visible light communication (VLC) systems offer a practical solution. Light emitting diode (LED) is able to be modulated in high speed as a transmitter, and a photodiode (PD) is commonly a receiver to detect the optical signal strength. In VLC based indoor positioning system, LEDs are applied for both positioning and illumination purposes so that infrastructure cost and power consumption are decreased. In addition, light positioning system provides other advantages such as no electromagnetic interference and better immunity against multipath reflections. Several methods are proposed to realize indoor positioning, such as triangulation, scene analysis and proximity, which are also applicable for a VLC based system. In prior works, the height of receiver is known so that the coordinates on the horizontal plane can be calculated. In this paper, the proposed method includes two stages: the height is presumed in the prediction stage and nonlinear estimation is applied in the correction stage to realize three dimensional coordinate estimation.

Original languageEnglish (US)
Title of host publicationBroadband Access Communication Technologies X
EditorsKatsutoshi Tsukamoto, Benjamin B. Dingel
ISBN (Electronic)9781510600072
StatePublished - 2016
EventBroadband Access Communication Technologies X - San Francisco, United States
Duration: Feb 16 2016Feb 17 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherBroadband Access Communication Technologies X
Country/TerritoryUnited States
CitySan Francisco

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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