Measurement Based Non-Line-Of-Sight Vehicular Visible Light Communication Channel Characterization

Bugra Turan, Omer Narmanlioglu, Osman Nuri Koc, Emrah Kar, Sinem Coleri, Murat Uysal

Research output: Contribution to journalArticlepeer-review


Vehicular visible light communication (V-VLC) aims to provide secure complementary vehicle-to-everything-communications (V2X) to increase road safety and traffic efficiency. V-VLC provides directional transmissions, mainly enabling line-of-sight (LoS) communications. However, reflections due to nearby objects enable non-line-of-sight (NLoS) transmissions, extending the usage scenarios beyond LoS. In this paper, we propose wide-band measurement based NLoS channel characterization, and evaluate the performance of direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM) V-VLC scheme for NLoS channel. We propose a distance based NLoS V-VLC channel path loss model considering reflection surface characteristics and NLoS V-VLC channel impulse response (CIR) incorporating the temporal broadening effect due to vehicle reflections through weighted double gamma function. The proposed path loss model yields higher accuracy up to 14&#x00A0;dB when compared to single order reflection model whereas CIR model estimates the full width at half maximum up to 2&#x00A0;ns accuracy. We further demonstrate that the target bit-error-rate of <inline-formula><tex-math notation="LaTeX">$10^{-3}$</tex-math></inline-formula> can be achieved up to 7.86&#x00A0;m, 9.79&#x00A0;m and 17.62&#x00A0;m distances for black, orange and white vehicle reflection induced measured NLoS V-VLC channels for DCO-OFDM transmissions.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalIEEE Transactions on Vehicular Technology
StatePublished - Sep 1 2022


  • Frequency measurement
  • Light emitting diodes
  • Loss measurement
  • NLoS channel model
  • Nonlinear optics
  • OFDM
  • Optical reflection
  • Reflection
  • Visible light communication channel

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Automotive Engineering


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