Turbulence Channel Modeling of Visible Light Communication under Strong Background Noise and Diversity Receiving Technologies

2016 ◽  
Vol 36 (3) ◽  
pp. 0301001
Author(s):  
赵嘉琦 Zhao Jiaqi ◽  
许银帆 Xu Yinfan ◽  
李洁慧 Li Jiehui ◽  
王一光 Wang Yiguang ◽  
迟楠 Chi Nan
Keyword(s):  
Visible Light ◽  
Background Noise ◽  
Channel Modeling ◽  
Visible Light Communication

scholarly journals Experimental Implementation and Theoretical Investigation of a Vanadium Dioxide Optical Filter for Bit Error Rate Enhancement of Enhanced Space Shift Keying Visible Light Communication Systems

Computation ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 30 ◽  
Author(s):  
Dimitra K. Manousou ◽  
Argyris N. Stassinakis ◽  
Emmanuel Syskakis ◽  
Hector E. Nistazakis ◽  
Spiros Gardelis ◽  
...  
Keyword(s):  
Visible Light ◽  
Bit Error Rate ◽  
Error Rate ◽  
Vanadium Dioxide ◽  
Background Noise ◽  
Communication Systems ◽  
Optical Filter ◽  
Optical Filters ◽  
Visible Light Communication ◽  
Performance Estimation

Visible Light Communication (VLC) systems use light-emitting diode (LED) technology to provide high-capacity optical links. The advantages they offer, such as the high data rate and the low installation and operational cost, have identified them as a significant solution for modern networks. However, such systems are vulnerable to various exogenous factors, with the background sunlight noise having the greatest impact. In order to reduce the negative influence of the background noise effect, optical filters can be used. In this work, for the first time, a low-cost optical vanadium dioxide (VO2) optical filter has been designed and experimentally implemented based on the requirements of typical and realistic VLC systems in order to significantly increase their performance by reducing the transmittance of background noise. The functionality of the specific filter is investigated by means of its bit error rate (BER) performance estimation, taking into account its experimentally measured characteristics. Numerous results are provided in order to prove the significant performance enhancement of the VLC systems which, as it is shown, reaches almost six orders of magnitude in some cases, using the specific experimental optical filter.

scholarly journals Outdoor Visible Light Communication Channel Modeling under Smoke Conditions and Analogy with Fog Conditions

Optics ◽  
2020 ◽  
Vol 1 (3) ◽  
pp. 259-281
Author(s):  
Véronique Georlette ◽  
Sébastien Bette ◽  
Sylvain Brohez ◽  
Rafael Pérez-Jiménez ◽  
Nicolas Point ◽  
...  
Keyword(s):  
Visible Light ◽  
Short Range ◽  
Channel Model ◽  
Light Emitting Diode ◽  
Channel Modeling ◽  
Visible Light Communication ◽  
Outdoor Environment ◽  
Smoke Particles ◽  
Fire Engineering ◽  
Order Of Magnitude

Visible Light Communication (VLC) has gained popularity in research and business in the last decade. This technology aims to combine lighting and communication into a single device. For now, this technology has been thoroughly studied for an indoor environment, but it is sufficiently mature nowadays to consider its outdoor-environment potentials. The key outdoor challenges are the weather variabilities and smoke particles in cities due to pollution or fires. The aim of this is the study and quantification of the weather and smoke particles’ impact on a short-range optical communication thanks to a simulator. This article’s novelty is the inclusion of the effects of smoke in a short-range outdoor VLC system channel model. This smoke model, which comes from the fire engineering field, states that smoke attenuation is independent of the wavelength, starting from high visibility to 5 m. The visibility represents the distance up to which an object can be distinguished against the background. The effects of fog and smoke are studied in the case of two outdoor VLC scenarios. Smoke and fog models have analogous equations to express the optical attenuation they induce, using the visibility concept. Taking into account the actual light-emitting diode (LED) lamp radiation pattern, the simulator computes the power at the receiver side and the channel attenuation coefficients for a given fog or/and smoke outdoor setting. The main result drawn in this paper is that the channel attenuation levels due to fog and smoke are both in the same order of magnitude, starting from the visibility of about 1 km. The attenuation induced by fog is higher under this threshold of 1 km.

scholarly journals Study of RSS-Based Indoor Positioning System for Target Using Visible Light Communication

2021 ◽  
Vol 19 (1) ◽  
pp. 1-11
Author(s):  
Ameur Chaabna ◽  
Abdesselam Babouri ◽  
Xun Zhang ◽  
Fayçal Boulsina ◽  
Takoua Hafsi
Keyword(s):  
Visible Light ◽  
Signal To Noise Ratio ◽  
Distance Estimation ◽  
Channel Modeling ◽  
Visible Light Communication ◽  
Positioning System ◽  
Light Emitting ◽  
Wireless Positioning ◽  
White Light Emitting Diodes ◽  
The Impact

An optical wireless positioning system that uses white light-emitting diodes (LEDs) based on Visible Light Communication (VLC) is presented in this paper. In the proposed system, four LEDs are employed for illumination and communication. The trilateration technique is used for determining the receiver's location and the practical Received Signal Strength (RSS) measurements are used for distance estimation. The impact of ambient light on Signal-to-Noise-Ratio (SNR) is studied by taking into consideration the first-order light reflection off of the ceiling, floor, and walls for channel modeling with both direct and indirect sunlight exposure. A modeling equation from the RSS measurements is proposed. The results show that the illuminance in all of the places in the room can be satisfied. Furthermore, the average positioning error by adopting the derived equation and trilateration technique was an error of less than 3 cm.

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