Experimental Evaluation of a Software Defined Visible Light Communication System

Bassam Aly (1, 2) , Mohammed Elamassie (2) , Burak Kebapci (2) , Murat Uysal (2)

1 Ford Otosan
2 Özyeğin University

Visible light communication (VLC) allows the dual use of light-emitting diodes (LEDs) for illumination and communication purposes. With its large bandwidth and immunity to electromagnetic interference, VLC can be used as complementary and/or alternative to radio communications. In this paper, we present a comprehensive experimental evaluation of a softwaredefined VLC system with on-off keying for both line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios. The experimental setup is based on a pair of modified National Instruments USRPs coupled with a custom design front-end. In the measurement campaign, we vary the distance between 1 to 3 meters with a step size of 0.5 m. For each point in this LOS scenario, we measure signal-to-noise ratio (SNR) and bit error rate (BER) with and without a lens. We also evaluate the effect of the reception angle (i.e, no strict alignment) on system performance. We further evaluate the SNR performance for NLOS scenarios and demonstrate a robust performance due to the wide field-ofview of the front-end.

Keywords: Visible light communication; software-defined; USRP; on-off keying; estimated SNR; LOS; NLOS; indoor measurements

Domains: Engineering Sciences [physics]

Bassam Aly, Mohammed Elamassie, Burak Kebapci, Murat Uysal. Experimental Evaluation of a Software Defined Visible Light Communication System. 2020 IEEE International Conference on Communications Workshops (ICC Workshops), Jun 2020, Dublin, Ireland. pp.1-6, ⟨10.1109/ICCWorkshops49005.2020.9145145⟩. ⟨hal-03342320⟩