Physical Layer Security for Visible Light Communication in the Presence of ISI and NLoS

ALBAYRAK C., Arslan H., TÜRK K.

2022 IEEE International Conference on Communications Workshops, ICC Workshops 2022, Seoul, South Korea, 16 - 20 May 2022, pp.469-474 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/iccworkshops53468.2022.9814535
  • City: Seoul
  • Country: South Korea
  • Page Numbers: pp.469-474
  • Keywords: visible light communication, physical layer security, beamforming, artificial noise, reflection, inter symbol, interference
  • Karadeniz Technical University Affiliated: Yes

Abstract

© 2022 IEEE.Visible light communication (VLC) is an important alternative and/or complementary technology for next generation indoor wireless broadband communication systems. In order to ensure data security for VLC in public areas, many studies in literature consider physical layer security (PLS). These studies generally neglect the reflections in the VLC channel and assume no inter symbol interference (ISI). However, increasing the data transmission rate causes ISI. In addition, even if the power of the reflections is small compared to the line of sight (LoS) components, it can affect the secrecy rate in a typical indoor VLC system. In this study, we investigate the effects of ISI and reflected channel components on secrecy rate in multiple-input single-output (MISO) VLC scenario utilized null-steering (NS) and artificial noise (AN) PLS techniques.