Paper Info
Title
Measurement Based Non-Line-of-Sight Vehicular Visible Light Communication Channel Characterization
Abstract
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 dB when compared to single order reflection model whereas CIR model estimates the full width at half maximum up to 2 ns accuracy. We further demonstrate that the target bit-error-rate of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$10^{-3}$</tex-math></inline-formula> can be achieved up to 7.86 m, 9.79 m, and 17.62 m distances for black, orange and white vehicle reflection induced measured NLoS V-VLC channels for DCO-OFDM transmissions.
Year
DOI
Venue
2022
10.1109/TVT.2022.3181160
IEEE Transactions on Vehicular Technology
Keywords
DocType
Volume
Visible light communication channel,DCO-OFDM,NLoS channel model
Journal
71
Issue
ISSN
Citations 
9
0018-9545
0
PageRank 
References 
Authors
0.34
7
6
Name
Order
Citations
PageRank
Bugra Turan100.34
Omer Narmanlioglu200.68
Osman Nuri Koc300.34
Emrah Kar401.01
Sinem Coleri501.69
Murat Uysal61899160.83