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      Comparative theoretical analysis of distance estimation in visible light positioning systems

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      Author(s)
      Keskin, M. F.
      Gezici, Sinan
      Date
      2016
      Source Title
      Journal of Lightwave Technology
      Print ISSN
      0733-8724
      Publisher
      Institute of Electrical and Electronics Engineers Inc.
      Volume
      34
      Issue
      3
      Pages
      854 - 865
      Language
      English
      Type
      Article
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      Abstract
      In this paper, theoretical limits and estimators are studied for synchronous and asynchronous visible light positioning (VLP) systems. Specifically, the Cramér-Rao lower bounds (CRLBs) and maximum likelihood estimators are investigated for distance estimation based on time-of-arrival (TOA) and/or received signal strength (RSS) parameters. Hybrid TOA/RSS-based distance estimation is proposed for VLP systems, and its CRLB is compared analytically against the CRLBs of TOA-based and RSS-based distance estimation. In addition, to investigate the effects of sampling, asymptotic performance results are obtained under sampling rate limitations as the noise variance converges to zero. A modified hybrid TOA/RSS-based distance estimator is proposed to provide performance improvements in the presence of sampling rate limitations. Numerical examples are presented to illustrate the theoretical results. © 2015 IEEE.
      Keywords
      Cramér-Rao lower bound
      Estimation
      Lambertian pattern
      Positioning
      Visible light
      Permalink
      http://hdl.handle.net/11693/36525
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/JLT.2015.2504130
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      • Department of Electrical and Electronics Engineering 4011
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