Short range, >100Kbits/s, visible light communication protocol design for high-gamma smartphones

2017 ◽  
Author(s):  
Jose Carlos Rodriguez-Novelo ◽  
Jose Alfredo Alvarez-Chavez ◽  
Jaime R. Ek-Ek ◽  
Ponciano J. Escamilla-Ambrosio ◽  
Abraham Sierra-Calderon ◽  
...  
Keyword(s):  
Visible Light ◽  
Short Range ◽  
Communication Protocol ◽  
Visible Light Communication ◽  
Protocol Design ◽  
High Gamma

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 High-Speed Integrated Digital to Light Converter for Short Range Visible Light Communication

2017 ◽  
Vol 29 (1) ◽  
pp. 118-121 ◽  
Author(s):  
Aravind V. N. Jalajakumari ◽  
Enyuan Xie ◽  
Jonathan McKendry ◽  
Erdan Gu ◽  
Martin D. Dawson ◽  
...  
Keyword(s):  
Visible Light ◽  
High Speed ◽  
Short Range ◽  
Visible Light Communication

VLC-based Data Transfer and Energy Harvesting Mobile System

2021 ◽  
Vol 15 (01) ◽  
pp. 01-09
Author(s):  
Yingying Chen ◽  
Bo Liu ◽  
Hongbo Liu ◽  
Yudong Yao
Keyword(s):  
Energy Harvesting ◽  
Visible Light ◽  
Data Transmission ◽  
Mobile Applications ◽  
Short Range ◽  
Data Transfer ◽  
Low Cost ◽  
Visible Light Communication ◽  
Interference Immunity ◽  
Light Storage

This paper explores a low-cost portable visible light communication (VLC) system to support the increasing needs of lightweight mobile applications. VLC grows rapidly in the past decade for many applications (e.g., indoor data transmission, human sensing, and visual MIMO) due to its RF interference immunity and inherent high security. However, most existing VLC systems heavily rely on fixed infrastructures with less adaptability to emerging lightweight mobile applications. This work proposes Light Storage, a portable VLC system takes the advantage of commercial smartphone flashlights as the transmitter and a solar panel equipped with both data reception and energy harvesting modules as the receiver. Light Storage can achieve concurrent data transmission and energy harvesting from the visible light signals. It develops multi-level light intensity data modulation to increase data throughput and integrates the noise reduction functionality to allow portability under various lighting conditions. The system supports synchronization together with adaptive error correction to overcome both the linear and non-linear signal offsets caused by the low time-control ability from the commercial smartphones. Finally, the energy harvesting capability in Light Storage provides sufficient energy support for efficient short range communication. Light Storage is validated in both indoor and outdoor environments and can achieve over 98% data decoding accuracy, demonstrating the potential as an important alternative to support low-cost and portable short range communication.

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