Abstract
<p class="0abstract">Visible Light Communication (VLC) is an emerging optical communication technology with rapid development nowadays. VLC is considered as a compliment and successor of radio-frequency (RF) wireless communication. There are various typical implementations of VLC in which one of them is for exchanging data TCP/IP packets, thus the user can browse the internet as in established Wireless fidelity (Wi-Fi) technology. Briefly, we can call it by Light fidelity (Li-Fi). This paper described the design and implementation of System-on-Chip (SoC) subsystem for Li-Fi application where the implemented SoC consists of hardware (H/W) and software (S/W). In the H/W aspect, Physical Layer (PHY) is made by using UART communication with Ethernet connection to communicate with Host/Device personal-computer (PC). In the S/W aspect, Xillinux operating system (OS) is used. The H/W- as well as S/W-SoC, are realized in FPGA Zybo Zynq-7000 EPP development board. The functional test result shows (without optical channel or Zybo-to-Zybo only) that the implemented SoC is working as expected. It is able to exchange TCP/IP packets between two PCs. Moreover, Ethernet connection has bandwidth up to 83.6 Mbps and PHY layer <em>baud rate</em> has bandwidth up to 921600 bps.</p>
Highlights
Mobile data traffic which grows exponentially for the last two decades has caused extreme wireless network usage
The Physical Layer (PHY) layer development is not focused on IEEE 802.15.7 standard compliance
We have developed MAC Layer software that is written in Python script [9], to execute this programs, we need an operating system (OS)
Summary
Mobile data traffic which grows exponentially for the last two decades has caused extreme wireless network usage. The available RF spectrum will be greatly reduced. The channel interference will be higher [1]. The year 2021 worldwide estimated there are more than 49 exabytes (Note, 1 EB = 1 billion gigabytes) of data traffic from the mobile-network in every month [2]. One solution is to replace the common RF-based technologies (like Wi-Fi) with another technology which employs beyond the RF spectrum. Visible light (380 nm – 780 nm) is considered spectrum to be employed for high-speed internet access purpose with no eleciJES ‒ Vol 6, No 1, 2018
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