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Optical Engineering

Exploring the performance of indoor localization systems based on VLC-RSSI, including the effect of NLOS components using two light-emitting diode lighting systems
Author(s): Mohammed Abd Elkarim; Nazmi Azzam Mohammed; Moustafa Hussein Aly
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Paper Abstract

We analyze the effect of diffuse reflection on indoor localization systems based on visible light communication. The target position is estimated using a received signal strength indication technique. Two lighting systems are considered: distinct and uniform lighting systems. Each utilizes commercially available light-emitting diodes and photodiodes with an illumination level conforming to standards. We introduce a comparative study between the two lighting systems through different transmitter (Tx) and receiver (Rx) essential parameters. The results show that the uniform lighting system achieves less localization error (≤20.43  cm) than a distinct lighting system (≤45.9  cm). The uniform lighting system is well adapted to low-Rx field of view (FOV) and narrow radiation angle (error=1  mm when semiradiation angle=5  deg). In the case of a distinct lighting system, low-Rx FOV is also required, while the Tx semiradiation angle needs to be determined carefully (error3.08  cm when semiradiation angle=20  deg). Finally, the uniform lighting system shows flexibility in the process of Tx and Rx designs. A uniform lighting system can utilize Rxs with narrow FOVs (≥8.6  deg), while a distinct lighting system is limited to Rx with a wide FOV (≥53.96  deg).

Paper Details

Date Published: 20 October 2015
PDF: 9 pages
Opt. Eng. 54(10) 105110 doi: 10.1117/1.OE.54.10.105110
Published in: Optical Engineering Volume 54, Issue 10
Show Author Affiliations
Mohammed Abd Elkarim, Arab Academy for Science, Technology & Maritime Transport (Egypt)
Modern Academy for Engineering and Technology (Egypt)
Nazmi Azzam Mohammed, New Cairo Academy for Science and Arts (Egypt)
October 6 Univ. (Egypt)
Moustafa Hussein Aly, Arab Academy for Science, Technology & Maritime Transport (Egypt)

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