Open AccessDynamic FOV visible light communications receiver for dense optical networks
Author(s) -
Abdalla Iman,
Rahaim Michael B.,
Little Thomas D.C.
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.5784
Subject(s) - visible light communication , computer science , field of view , testbed , signal to noise ratio (imaging) , aperture (computer memory) , signal (programming language) , performance metric , optics , computer vision , telecommunications , physics , acoustics , computer network , management , light emitting diode , economics , programming language
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.