The Utilization of Artificial Neural Network Equalizer in Optical Camera Communications [PDF]
Sensors, 2021 In this paper, we propose and validate an artificial neural network-based equalizer for the constant power 4-level pulse amplitude modulation in an optical camera communications system.
Othman Isam Younus +5 more
doaj +4 more sources
Wireless Sensor Networks Using Sub-Pixel Optical Camera Communications: Advances in Experimental Channel Evaluation [PDF]
Sensors, 2021 Optical wireless communications in outdoor scenarios are challenged by uncontrollable atmospheric conditions that impair the channel quality. In this paper, different optical camera communications (OCC) equipment are experimentally studied in the ...
Vicente Matus +4 more
doaj +4 more sources
Experimentally Derived Feasibility of Optical Camera Communications under Turbulence and Fog Conditions [PDF]
Sensors, 2020 Optical camera communications (OCC) research field has grown recently, aided by ubiquitous digital cameras; however, atmospheric conditions can restrict their feasibility in outdoor scenarios.
Vicente Matus +4 more
doaj +4 more sources
Optical Lensless-Camera Communications Aided by Neural Network [PDF]
Applied Sciences, 2019 Currently, the optical components of a camera embedded in the device constrain its overall thickness. Moreover, if the camera is strongly shaken, the lens and sensor may be misaligned, resulting in a defocusing effect.
Suhua Zhong +5 more
doaj +4 more sources
Optical Camera Communications for IoT–Rolling-Shutter Based MIMO Scheme with Grouped LED Array Transmitter [PDF]
Sensors, 2020 In optical camera communications (OCC), the provision of both flicker-free illumination and high data rates are challenging issues, which can be addressed by utilizing the rolling-shutter (RS) property of the image sensors as the receiver (Rx).
Shivani Rajendra Teli +5 more
doaj +4 more sources
Optical Camera Communications in Healthcare: A Wearable LED Transmitter Evaluation during Indoor Physical Exercise [PDF]
SensorsThis paper presents an experimental evaluation of a wearable light-emitting diode (LED) transmitter in an optical camera communications (OCC) system. The evaluation is conducted under conditions of controlled user movement during indoor physical exercise,
Eleni Niarchou +4 more
doaj +4 more sources
A Simplified Model for the Rolling Shutter Based Camera in Optical Camera Communications [PDF]
2019 15th International Conference on Telecommunications (ConTEL), 2019 A simplified model of the camera for optical camera communications (OCC) based on the rolling shutter effect is proposed and experimentally verified. In OCC, the key parameters are the exposure time, which is proportional to the DC gain and inversely proportional to the bandwidth, and the rolling shutter delay or the sampling period.
Xicong Li +2 more
exaly +7 more sources
Design and Experimental Characterization of a Discovery and Tracking System for Optical Camera Communications [PDF]
Sensors, 2021 Visible light communications (VLC) technology is emerging as a candidate to meet the demand for interconnected devices’ communications. However, the costs of incorporating specific hardware into end-user devices slow down its market entry. Optical camera
Antonio Mederos-Barrera +4 more
doaj +2 more sources
Experimental Demonstration of RGB LED-Based Optical Camera Communications [PDF]
IEEE Photonics Journal, 2015 Red, green, and blue (RGB) light-emitting diodes (LEDs) are widely used in everyday illumination, particularly where color-changing lighting is required.
Pengfei Luo +7 more
doaj +3 more sources
Sandstorm effect on experimental optical camera communication [PDF]
Applied Optics, 2020 Sandstorms can severely affect the reliability of outdoor optical wireless communications (OWC) by diminishing large regions’ visibility. In this work, the effect of a real sandstorm on optical camera communications (OCC) links is experimentally evaluated.
Matus, Vicente +4 more
openaire +6 more sources