An indoor IoT-based LiFi system using LEDs for sensor data transfer

Mostafa A.R. Eltokhy; Mohamed Abdel-Hady; Ayman Haggag; Hisham A. Hamad; Tarek Hosny; Ahmed A. F. Youssef; Ali M. El-Rifaie; Mostafa A.R. Eltokhy; Mohamed Abdel-Hady; Ayman Haggag; Hisham A. Hamad; Tarek Hosny; Ahmed A. F. Youssef; Ali M. El-Rifaie

doi:10.3934/electreng.2025007

AIMS Electronics and Electrical Engineering

2025, Volume 9, Issue 2: 118-138. doi: 10.3934/electreng.2025007

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Research article Topical Sections

An indoor IoT-based LiFi system using LEDs for sensor data transfer

1.
Electronics Technology Department, Faculty of Technology and Education, Helwan University, Cairo, Egypt
2.
Communication Engineering Dept, Al-Safwa High Institute of Engineering, High Ministry of Education, Cairo, Egypt
3.
College of Engineering and Technology, American University of the Middle East, Egaila 54200, Kuwait

Academic Editor: Harry Leib

Received: 24 December 2024 Revised: 18 February 2025 Accepted: 27 February 2025 Published: 11 March 2025

The Internet of Things (IoT) has an ever more significant function in many areas of our modern world. It improves the overall quality of life, where almost everything, including objects and devices, can be linked to the cloud and thus be hyper-connected. Within this changing IoT system, this paper focuses on data transfer, emphasizing the critical role of light fidelity (LiFi) technology. LiFi technology is an up-and-coming technology that makes use of light-emitting diodes (LEDs) and photodetectors (PDs) as transmitters and receivers (R_X), respectively, for concurrent data communications and lighting. This paper proposes a single-input multiple-output IoT-based LiFi system using an LED array, phototransistor, and ambient light sensor-based R_XS for simultaneous data transmission. DHT11 sensor is used to measure the environmental conditions and store collected data via Wi-Fi in the cloud server using HTTP protocol. Through indoor LiFi communication, the cloud streaming data is transferred using pulse position modulation (PPM) at a frequency of 2 KHz. The experimental results illustrate transferring and receiving data successfully at a communication distance of 1 meter. MATLAB software is used to evaluate the performance of the spatial radiance pattern and illuminance intensity of an LED Array used and received power depending on a line-of-sight (LOS) channel.
- Light Fidelity (LiFi),
- Internet of Things (IoT),
- Ambient Light Sensor (ALS),
- Pulse Position Modulation (PPM),
- Light Emitting Diodes (LEDs)
Citation: Mostafa A.R. Eltokhy, Mohamed Abdel-Hady, Ayman Haggag, Hisham A. Hamad, Tarek Hosny, Ahmed A. F. Youssef, Ali M. El-Rifaie. An indoor IoT-based LiFi system using LEDs for sensor data transfer[J]. AIMS Electronics and Electrical Engineering, 2025, 9(2): 118-138. doi: 10.3934/electreng.2025007

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Abstract

The Internet of Things (IoT) has an ever more significant function in many areas of our modern world. It improves the overall quality of life, where almost everything, including objects and devices, can be linked to the cloud and thus be hyper-connected. Within this changing IoT system, this paper focuses on data transfer, emphasizing the critical role of light fidelity (LiFi) technology. LiFi technology is an up-and-coming technology that makes use of light-emitting diodes (LEDs) and photodetectors (PDs) as transmitters and receivers (R_X), respectively, for concurrent data communications and lighting. This paper proposes a single-input multiple-output IoT-based LiFi system using an LED array, phototransistor, and ambient light sensor-based R_XS for simultaneous data transmission. DHT11 sensor is used to measure the environmental conditions and store collected data via Wi-Fi in the cloud server using HTTP protocol. Through indoor LiFi communication, the cloud streaming data is transferred using pulse position modulation (PPM) at a frequency of 2 KHz. The experimental results illustrate transferring and receiving data successfully at a communication distance of 1 meter. MATLAB software is used to evaluate the performance of the spatial radiance pattern and illuminance intensity of an LED Array used and received power depending on a line-of-sight (LOS) channel.

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