Visible light propagation characteristics under turbulent atmosphere and its impact on communication performance of traffic system

2019 ◽  
Author(s):  
Lida Guo ◽  
Ming-jian Cheng ◽  
Li-xin Guo
Keyword(s):  
Visible Light ◽  
Turbulent Atmosphere ◽  
Light Propagation ◽  
Propagation Characteristics ◽  
Communication Performance ◽  
Traffic System

scholarly journals Simulation and Analysis of Indoor Visible Light Propagation Characteristics Based on the Method of SBR/Image

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Liu Yuan-jian ◽  
Shi Qin-jian ◽  
Ma Xue ◽  
Zhang Ye-rong
Keyword(s):  
Visible Light ◽  
Power Distribution ◽  
Light Propagation ◽  
Visible Light Communication ◽  
Delay Spread ◽  
Network Coverage ◽  
Propagation Characteristics ◽  
Received Power ◽  
Propagation Parameters ◽  
Good Agreement

The indoor visible light propagation characteristics are simulated and analyzed using the method of SBR/Image (shooting and bounding ray tracing/Image). A good agreement is achieved between the results simulated and the results given in published literature. So the correctness of the method has been validated. Some propagation parameters are obtained in the simulation, such as the indoor received power distribution, statistical distribution of phase angle of received power, RMS (root mean square) delay spread, direction of arrival, and Doppler shift. The foundation for the wireless network coverage of indoor visible light communication system is provided by the analysis of the above results.

An approach to ensure joint illumination & communication performance of a forward error corrected indoor visible light communication (VLC) system in presence of ambient light interference

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sourish Chatterjee ◽  
Biswanath Roy
Keyword(s):  
Visible Light ◽  
Bit Error Rate ◽  
Error Rate ◽  
Light Emitting Diode ◽  
Visible Light Communication ◽  
Ambient Light ◽  
Ambient Illumination ◽  
Communication Performance ◽  
Light Interference ◽  
Forward Error

AbstractIn recent time of looming radio frequency (RF) spectrum crisis, visible light communication using lighting infrastructure emerged as a potential alternative at an indoor environment. This paper addresses the setback associated with ambient light interference in an indoor Visible Light Communication (VLC) system to ensure joint communication and illumination performance inside an office room. A novel VLC architecture with suitable white light emitting diode (WLED) luminaire arrangement is presented to minimize the dispersion of signal to interference plus noise ratio (SINR) across the room. Luminaires are categorized in two groups viz. data transmitting illuminants and illuminants for lighting purpose. The first group is dedicated to transmit data as well as serves the purpose of illumination. The other set creates only ambient illumination to achieve quality lighting attributes. The proposed forward error corrected receiver configuration discards the ambient light noise originated by the illuminants that serve the ambient illumination. Tail biting convolutional encoder and viterbi decoder are used at the encoding section of the transmitter and decoding section of the receiver respectively to improve bit error rate. Results obtained through MATLAB simulation shows better average bit error rate (BER) in the order of 10−8 measured at uniformly distributed 25 grid points over the working plane. At the same time achieved average horizontal illuminance with good uniformity comply with ISO recommendation.

Light propagation characteristics in quantum well structures of photonic crystals

2008 ◽  
Vol 17 (5) ◽  
pp. 1833-1839 ◽  
Author(s):  
Liu Jing ◽  
Sun Jun-Qiang ◽  
Huang Chong-Qing ◽  
Chen Min ◽  
Huang De-Xiu
Keyword(s):  
Photonic Crystals ◽  
Quantum Well ◽  
Light Propagation ◽  
Propagation Characteristics ◽  
Quantum Well Structures
Sign in / Sign up

Export Citation Format

Share Document