Abstract
Visible light communication (VLC) has recently gained significant academic and industrial attention. VLC has great potential to supplement the functioning of the upcoming radio-frequency (RF)-based 5G networks. It is best suited for home, office, and commercial indoor environments as it provides a high bandwidth and high data rate, and the visible light spectrum is free to use. This paper proposes a multi-user full-duplex VLC system using red-green-blue (RGB), and white emitting diodes (LEDs) for smart home technologies. It utilizes red, green, and blue LEDs for downlink transmission and a simple phosphor white LED for uplink transmission. The red and green color bands are used for user data and smart devices, respectively, while the blue color band is used with the white LED for uplink transmission. The simulation was carried out to verify the performance of the proposed multi-user full-duplex VLC system. In addition to the performance evaluation, a cost-power consumption analysis was performed by comparing the power consumption and the resulting cost of the proposed VLC system to the power consumed and resulting cost of traditional Wi-Fi based systems and hybrid systems that utilized both VLC and Wi-Fi. Our findings showed that the proposed system improved the data rate and bit-error rate performance, while minimizing the power consumption and the associated costs. These results have demonstrated that a full-duplex VLC system is a feasible solution suitable for indoor environments as it provides greater cost savings and energy efficiency when compared to traditional Wi-Fi-based systems and hybrid systems that utilize both VLC and Wi-Fi.
Highlights
With the rapid increase in the number of multimedia-capable and internet-connected devices, there is an increasing need for further development of wireless technology in order to meet these demands
Else if the number of resource blocks (RBs) is greater than the number of users, it will allocate the RB to each user which can be accommodated while the users that are left will be rejected from the LEDID
This paper proposes a new multi-user full-duplex visible light communication (VLC) system to be used in a smart home
Summary
With the rapid increase in the number of multimedia-capable and internet-connected devices, there is an increasing need for further development of wireless technology in order to meet these demands. Most of the data consumption has been observed to occur in indoor environments, where users consume data using their smart devices at their residence, in shopping malls, in aircrafts, and in other vehicles This high demand of data usage is expected to continue to grow in the foreseeable future. VLC can provide a high bandwidth density, which can help in bridging the gap between the demand and supply of high bandwidth that currently affects RF-based networks. Considering these favorable characteristics, VLC is currently best suited to assist Het-Nets in 5G networks, making it a promising supplementary technology for 5G systems that can be deployed as an affordable commercial product for smart homes in the near future. It has various new challenges that will spark interesting new research in the future [5,6]
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