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Title: lifi technology overview: taxonomy, and future directions.

Abstract: The looming electromagnetic spectrum crisis -- due to the fact of the explosive growth in the increasing user data demand -- has encouraged the emergence of new wireless technologies. This paper surveys the state-of-the-art leading and rapid developments in the current Light Fidelity (LiFi) technology. First, an overview is shown to help readers understand the potential of this technology. A comprehensive comparison with legacy wireless technologies is analyzed. We devise a taxonomy based on the main characteristics such as modulation techniques, applications, scenarios, network topologies, and architecture requirements, which enables a foundation for the research community. We highlight the powerful opportunities, the ongoing works, and results, identifying the challenges for future research.

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Review of LiFi Technology and Its Future Applications

In order to respond to the increasing demand of capacity and bandwidth caused by the high number of wireless applications and users, LiFi technology was introduced. It uses the visible light spectrum instead of the radio spectrum to transmit data wirelessly through the illumination of LED lamps. The main advantage of this technology is to provide wireless communications with high data rates. Other advantages include efficiency, availability, security and safety. Also, this technology uses free unlicensed spectrum, and it is cost-effective. Additionally, unlike RF systems, no multipath fading and the transmitter and receiver circuits are not complex. However, LiFi has several issues, which include high path loss, sensitivity to blockages and Non-line-of-sight (NLOS) situations. Probably, the biggest issue of LiFi is the uplink communication which is difficult to implement due to practical and cost reasons. Several future applications of this technology include places where RF is restricted such as hospitals and airplanes. Also, it can be used for traffic management, underwater communication, and outdoor access to the Internet. Moreover, it can be combined with WiFi technology either in hybrid technique or aggregated technique. It is found that later technique gives better results. Another possible application is the optical attocells. It is found that the hexagonal cells model is the best for deterministic deployments of optical APs, whereas the hard-core point process (HCPP) model is the best for random deployments. Furthermore, LiFi can be used for multiuser access with high data rate by using non-orthogonal multiple access (NOMA) technique. Due to the great features of LiFi, more applications and everyday life devices will adopt this technology in the future. However, Because of its limitations, it may not totally replace RF technology, but they will work collaboratively to achieve a better performance.

Acknowledgements

I would like to thank King Abdul-Aziz University, who supported this work by a scholarship.

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G. Devi , N. Jayanthi , S. Rahul , M. Saran Karthick , S. Gokul Raghavendra , M. Anand; A critical review on Li-Fi technology and its future applications. AIP Conf. Proc. 24 March 2023; 2690 (1): 020061. https://doi.org/10.1063/5.0121967

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Lifi technology was introduced to face the increased demand of wireless applications caused by the drastic increase of users. Light from LEDs are used to transmit the signals. Unlike radio waves, the data transmission using visible light is more efficient with high security defense. Visible light can be used for free of cost is another major reason for its wide application. There is an increase in the usage of Lifi technology in hospital zones and security communications for its un harmful and data security reasons. Communication domain estimates a high increase in demand for Lifi technology in the near future which includes its usage in space and under water communications. Due to few limitations in Lifi technology; it cannot fully replace radio wave transmission technology. Anyway the hybrid model of bringing both wifi and Lifi technology is having a great future demand in the communication world. This review helps the Researchers in Lifi technology to expand their search in this communication technology.

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A Review on LiFi Network Research: Open Issues, Applications and Future Directions

Applied Sciences

This paper extensively reviews and analyses Light Fidelity (LiFi), a new technology that uses light to transmit data as a high-speed wireless connection system from a wide spectrum of domains. An in-depth analysis and classifications of pertinent research areas for LiFi networks are presented in this paper. The various aspects constituting this paper include a detailed literature review, proposed classifications, and statistics, which further is deliberated to encompass applications, system architecture, system components, advantages, and disadvantages. LiFi and other technologies are compared, multi-user access techniques used in LiFi networks are investigated and open issues are addressed in detail. The paper is concluded with a comprehensive taxonomy of literature comparison that has served as the basis of the proposed open issues and research trends.

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The paper proclaims a summary of Li-Fi technology. It is an efficient data communication mechanism involving visible light as a medium of transmission. This monograph introduces the concept of Li-Fi and its working model. Furthermore, it discusses its benefits, shortcomings and examines ways to mitigate the drawbacks. Additionally, it analyzes its present applications and explores its future scope in the competitive wireless network market.

mehroze nasir

— Light Emitting Diodes(LED) are used in different areas of everyday life. The advantage of this device is that in addition to their lightening capabilities, it can be used for data transmissions as well. In the present study, the authors have made an exhaustive study on technology of Li-Fi and its applications in transferring data from one computer to another computer. The authors have also made study on advantages as well as disadvantages of using Li-Fi in transferring data from one computer to another computer. The massive use of Li-Fi may solve some bottleneck of data transmission in Wi-Fi technology. Finally the authors have also tried to explore the future scope of this new technology for using visible light as the carrier in data transmission and networking.

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Li-Fi stands for Light-Fidelity. Li-Fi technology, proposed by the German physicist - Harald Haas, provides transmission of data through illumination by sending data through an LED light bulb that varies in intensity faster than the human eye can follow. This paper focuses on developing a Li-Fi based system and analyzes its performance with respect to existing technology. Wi-Fi is great for general wireless coverage within buildings, whereas Li-Fi is ideal for high density wireless data coverage in confined area and for relieving radio interference issues.

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Today’s scenario is for getting correct information at the right time and right place, which requires fast internet connectivity, technology and large spectrum of channels. Due to this, the Wi-Fi network system and cloud computing are constantly expanding and reliable signal, speed and security are getting suffered. Also, they are vulnerable to hacker as it penetrates through walls easily. To overcome this problem, Light Fidelity is a wireless data transmission technique in which light emitting diodes are used as a carrier signal to transmit the data wirelessly instead of traditional radio frequency as in Wi-Fi. Using this technique, a one watt LED bulb would be enough to provide internet connectivity to many computers. Li-Fi is a fast and cheap version of Wi-Fi which is based on Visible light communication (VLC). Visible light Communication which may be the future of internet uses pulses of light to transmit the data wirelessly which cannot be detected by human eyes. It can produce data rate faster than 10 megabits per second. In this research, it is discussed and analyzed how to enhance the Li-Fi technology in data science field. It is investigated different parameters are used in Li-Fi data transmission techniques compared to Wi-Fi network system. It also highlights different challenges for Li-Fi and visible light communication and applications of Li-Fi.

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Advent of Light-Fidelity (LiFi) is considered to be the dawn of a new era in the field of wireless communication. Visible Light Communication (VLC) has been around for over a century; however, after the introduction of LEDs into the VLC, there has been a drastic change in the efficiency of VLC. Not only was it taken seriously but the initial prototypes hinted towards a great opportunity, and as with passing years the VLC achieved spectacular data rates. Recently VLC was turned into a complete communication system with the introduction of layers and protocols and was named as LiFi. This paper focuses on LiFi as a feasible complement to the existing RF based communication. For this purposes, we thoroughly analyzed the difference between VLC and LiFi, the issues in RF based communication that can be addressed by LiFi, the working mechanism of LiFi, its pros and cons and finally we studied the application of LiFi. We concluded that LiFi can prove to be an excellent complement to the exi...

International Journal of Advanced Trends in Computer Science and Engineering

WARSE The World Academy of Research in Science and Engineering

Light Fidelity (LiFi) is a wireless technology that transmits high-speed data using visible light communication (VLC) in the network systems. Light Fidelity technologies are becoming well-liked everyday due to their important role in different applications such as Hospitals, Smart Lighting, Underwater Communication and Harmful Environments etc. The Light Fidelity (LiFi) technologies are in front of different kinds of performance issues in the terms of Signal-to-Noise Ratio (SNR) and Bit-Error Rate (BER). We have done a near examination on different performance issues in Li Fi technology and finally proposed a solution to improve its performance. It was done in experimental approach to the proposed VLC model acknowledges physical layer models portraying the noticeable range mapped to a variety of optical modulation schemes.. We also considered device mobility and direction which exclusively impact an optical receiver. We are also described the adopted physical models, the structure of the NS3 model implementation, and express performance assessment for an Radio Frequency (WiFi) and LiFi (VLC) situation. In this case, when we understand and known to analyze of the VLC (LiFi) downlink and the Radio Frequency (WiFi) uplink are paired using the combination of our NS3 VLC component and accessible NS3 in Radio Frequency modules. When we use the network simulator showed that how this situation can be concentrated regarding the Light Fidelity network in the VLC of Signal-to Noise-Ratio[SNR] and Bit-Error-Rate[BER] boundaries, and in the subsequent of the Network Performance measured. .

sameedulhussan asif

LIFI was first introduce by Professor Harald Haas on July 2011. Light fidelity (LI-FI) may be a technology which uses light as a medium to travel from one place to a different. It uses Light like Light Emitting Diode (LED) visible radiation Communication (VLC) for data Transferring and Internet connection. LIFI may be a technique which uses light as a medium because it uses light to travel it's 20 times faster than any WIFI within the world. during this paper we speak about things like what's LIFI and the way it's better then WIFI why we want LIFI and What changes did bring LIFI in our Future LIFI. How it'll make IOT devices far better than before The Technique to implement LIFI and also the problem we face of implementation of LIFI.

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