Dynamic FOV visible light communications receiver for dense optical networks

Iman Abdalla; Michael B. Rahaim; Thomas D.C. Little

Dynamic FOV visible light communications receiver for dense optical networks

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Author(s): Iman Abdalla¹ ; Michael B. Rahaim² ; Thomas D.C. Little¹
- Affiliations: 1: Electrical and Computer Engineering Department , Boston University , Boston, MA , USA ;
  2: Engineering Department , University of Massachusetts at Boston , Boston, MA , USA
Source: Volume 13, Issue 7, 23 April 2019, p. 822 – 830
DOI: 10.1049/iet-com.2018.5784 , Print ISSN 1751-8628, Online ISSN 1751-8636

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)

Received 16/08/2018, Accepted 05/02/2019, Revised 01/02/2019, Published 12/02/2019

This study explores how the field-of-view (FOV) of a visible light communications (VLCs) receiver can be manipulated to realise the best signal-to-noise ratio (SNR) while supporting device mobility and optimal access point (AP) selection. The authors propose a dynamic FOV receiver that changes its aperture according to receiver velocity, location, and device orientation. The D-FOV technique is evaluated through modelling, analysis, and experimentation in an indoor environment comprised of 15 VLC APs. The proposed approach is also realised as an algorithm that is studied through analysis and simulation. The results of the study indicate the efficacy of the approach including a 3X increase in predicted SNR over static FOV approaches based on measured received signal strength in the testbed. Additionally, the collected data reveal that D-FOV increases effectiveness in the presence of noise. Finally, the study describes the tradeoffs among the number of VLC sources, FOV, user device velocity, and SNR as a performance metric.

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