Cramer-Rao bound for AOA-based VLP with an aperture-based receiver

Heidi Steendam, Thomas Q. Wang, Jean Armstrong

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

6 Citations (Scopus)


Visible light positioning (VLP) for indoor applications has recently received considerable attention. In this paper, an aperture based receiver is considered and the position is estimated based on the angle-of-arrival (AOA), because the AOA can be determined by comparing the relative differences in the received signal strengths (RSS) in the different photodiodes (PDs) of the receiver. Hence, in contrast to RSS based positioning solutions, knowledge of the transmitted signal strengths is not required. The performance of the proposed approach depends on the transmitted signal strength only through the dependency on the signal-to-noise ratio. To evaluate the accuracy of the estimates of the AOA, we derive the Cramer-Rao lower bound, and show that the expected error on the AOA is very small. Applying triangulation to determine the position of the receiver, it follows that centimetre accuracy can be obtained with the aperture-based receiver.

Original languageEnglish
Title of host publication2017 IEEE International Conference on Communications (ICC 2017)
EditorsDavid Gesbert, Merouane Debbah, Abdelhamid Mellouk
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)9781467389990
ISBN (Print)9781467390002
Publication statusPublished - 2017
EventIEEE International Conference on Communications 2017: Bridging People, Communities, and Cultures - Paris, France
Duration: 21 May 201725 May 2017 (Proceedings)


ConferenceIEEE International Conference on Communications 2017
Abbreviated titleICC 2017
Internet address


  • angle-of-arrival
  • Cramer-Rao bound
  • positioning
  • VLP

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