Indoor localization based on multiple LEDs position estimation

Popoola, O. R. , Ogunkoya, F. B., Popoola, W. O., Ramirez-Iniguez, R. and Sinanovic, S. (2016) Indoor localization based on multiple LEDs position estimation. In: 2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Edinburgh, UK, 3-6 July 2016, ISBN 9781509017492 (doi: 10.1109/SPAWC.2016.7536790)

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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.

Item Type:Conference Proceedings
Keywords:Global Positioning System;LED displays;protocols;LED transmitters;PDM;indoor localization;low cost ATMEG 328 microcontroller;low duty cycle transmission protocol;low-complexity based indoor positioning system;mobile receiver;multiple LED position estimation;multiple access receivers;packet based pulse duration multiplexing;positional information;root mean square error;Algorithm design and analysis;Interference;Light emitting diodes;Optical pulses;Optical receivers;Optical transmitters;Indoor localization;Microcontroller-based positioning;Multiple LEDs;Overlap;optical wireless communications
Glasgow Author(s) Enlighten ID:Popoola, Dr Olaoluwa
Authors: Popoola, O. R., Ogunkoya, F. B., Popoola, W. O., Ramirez-Iniguez, R., and Sinanovic, S.
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Published Online:11 August 2016

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