Interactive internet of things based on dark light system for smart room
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Interactive internet of things based on dark light system for smart room Marwa M. El Gamal1 · Heba A. Fayed2 · Moustafa H. Aly2 · Nour Eldin Ismail1 · Amr Mokhtar1 Received: 21 May 2020 / Accepted: 21 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Visible light communication (VLC) is a rising guaranteeing new innovation for optical wireless communication with taking part favorable circumstances not available on radio communication. Especially, as connectivity propagation, both across the world and via the Internet of Things. Any communication system is based on the LED light is luminous to verifying the connection. The major challenge in VLC is how to make a communication system to download data in the dark light when indoor lighting is not needed. This paper explains how visible light can be used to transmit data even when the light appears dark or off. We investigate VLC minimum illumination to receive power, to enable users to receive data when the light is “OFF”. This paper focuses on improving the system performance including signal to noise ratio, required power and bit error rate. VLC with different modulation schemes highlighting as the On–OFF Keying, Pulse Position Modulation, L-Pulse Position Modulation, and Inverse L-Pulse Position Modulation are investigated in the dark light for communication. A short part of Pulse Width Modulation is used for dimming illumination. The paper examines the selected parameters and essential requirements of VLC dark light system which are power, bandwidth efficiency and the dimming factor of light sources. We confirm that dark light is enough to keep up information paces of a few kbps. This looks good for the eventual fate of VLC for actualizing shrewd lighting systems.
* Moustafa H. Aly [email protected] Marwa M. El Gamal [email protected] Heba A. Fayed [email protected] Nour Eldin Ismail [email protected] Amr Mokhtar [email protected] 1
Electrical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
2
Electronics and Communication Engineering Department, College of Engineering and Technology, Arab Academy for Science, Technology and Maritime Transport, P.O.B. 1029, Alexandria, Egypt
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Keywords VLC · Dark light · PWM · Dimming control · IoT
1 Introduction Visible light communication (VLC) or Light Fidelity (Li-Fi) have attracted a great interest in latest years in order to overcome the limited spectrum in radio frequency (RF) communications to fulfill the expanding interest for rapid communication interfaces between electronics and sensors, and to empower the vision of a profoundly interconnected world like Internet of Things (IoT), smart cities, smart homes and smart room (Bamiedakis et al. 2020). In IoT, all the devices will have connectivity and processing. For example, televisions (TVs), microwaves, fridges and vehicles will all day be connected, every day associated, requiring significantly m
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