Indoor localization based on multiple LEDs position estimation

O. R. Popoola, F. B. Ogunkoya, W. O. Popoola, R. Ramirez-Iniguez, S. Sinanovic

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

Abstract

This paper describes the simulation results and hardware implementation of an inexpensive, low-complexity LED based indoor positioning system. Localization by multiple LEDs estimation model (MLEM) approximates position of a mobile receiver by the acquisition of positional information from LED transmitters. Multiple LED orientation can either be with or without overlap. Receivers in a no-overlap LED orientation experience only single access while multiple access receivers are designed for orientations with overlaps. Single and multiple access systems were developed and implemented by the use of low cost ATMEG 328 microcontroller. Since multiple LEDs transmit data at the same wavelength and are asynchronous, overlap in multiple access system causes interference. The possibility of this interference is reduced by packet based pulse duration multiplexing (PDM) and a low duty cycle transmission protocol. By the use of MLEM, root mean square error in position estimation is reduced to about 1 percent of the length an indoor location. Experimental results show that overlap increases positional accuracy over a wider coverage region and that the multiple access system allows for a more reliable positioning.

Original languageEnglish
Title of host publicationIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2016-August
ISBN (Print)9781509017492
DOIs
Publication statusPublished - 9 Aug 2016
Event17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016 - Edinburgh, United Kingdom
Duration: 3 Jul 20166 Jul 2016

Conference

Conference17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016
Country/TerritoryUnited Kingdom
CityEdinburgh
Period3/07/166/07/16

Keywords

  • Indoor localization
  • Microcontroller-based positioning
  • Multiple LEDs
  • optical wireless communications
  • Overlap

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