TY - JOUR
T1 - Efficient analytical calculation of non-line-of-sight channel impulse response in visible light communications
AU - Chen, Cheng
AU - Basnayaka, Dushyantha A.
AU - Wu, Xiping
AU - Haas, Harald
N1 - © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - This study provides an analytical method to calculate the non-line-of-sight (NLoS) channel impulse response (CIR) in visible light communication (VLC) systems based on intensity modulation and direct detection (IM/DD). In this method, the NLoS channel is decomposed into a number of components with different propagation categories. These propagation categories are defined according to the number of reflections and the reflective surfaces that the light undergoes. The CIR corresponding to each light propagation category is analysed and the overall NLoS CIR is approximated by the combination of the calculated CIR components in different propagation categories. The proposed method has the major advantage of offering accurate results with very low computational complexity. Typically, a NLoS CIR with a time resolution of 0.1 ns can be generated within a second in MATLAB. Furthermore, the analytical results derived herein could be used as an analytical tool for the VLC channel characterisation study in future research.
AB - This study provides an analytical method to calculate the non-line-of-sight (NLoS) channel impulse response (CIR) in visible light communication (VLC) systems based on intensity modulation and direct detection (IM/DD). In this method, the NLoS channel is decomposed into a number of components with different propagation categories. These propagation categories are defined according to the number of reflections and the reflective surfaces that the light undergoes. The CIR corresponding to each light propagation category is analysed and the overall NLoS CIR is approximated by the combination of the calculated CIR components in different propagation categories. The proposed method has the major advantage of offering accurate results with very low computational complexity. Typically, a NLoS CIR with a time resolution of 0.1 ns can be generated within a second in MATLAB. Furthermore, the analytical results derived herein could be used as an analytical tool for the VLC channel characterisation study in future research.
KW - nonlinear optics
KW - optical transmitters
KW - optical receivers
KW - wireless communication
KW - light sources
KW - optical detectors
UR - https://www.research.ed.ac.uk/en/publications/efficient-analytical-calculation-of-non-line-of-sight-channel-imp
U2 - 10.1109/JLT.2017.2786459
DO - 10.1109/JLT.2017.2786459
M3 - Article
SN - 1558-2213
VL - 36
SP - 1666
EP - 1682
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 9
M1 - 8234545
ER -