Dynamic Load Balancing With Handover in Hybrid Li-Fi and Wi-Fi Networks

Wang, Yunlu; Haas, Harald

doi:10.1109/jlt.2015.2480969

Cited by 176 publications

(46 citation statements)

References 21 publications

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“…The proposed simulation was tested with the trivial VANET simulation as described by (6) . The scheduling in VAENT faces different issues like jitter, message delay, and message throughput issues.…”

Section: Results Comparison With Trivial Vanet Simulationmentioning

confidence: 99%

“…In Li-Fi Networks (Li-Net) every vehicle may behave differently like a sender, recipient and switch to lead correspondences. Vehicle to Vehicle Communication (VC) can be stated as 1) "Inter-Vehicle Communication (IVC)", 2)" Roadside-Vehicle Communication (RVC)", and 3) "Hybrid Vehicle Communication (HVC)" (6) .…”

Section: B Communication Patterns In Li-fi Vehicle Network (Li-netmentioning

confidence: 99%

“…The smart traffic system allows and utilizes the Li-Fi network that avoids the radio airwaves and their potential fear of interference. For this reason TESLA autopilot system (6) can also be alternated. The system is currently being operated by TESLA and is no widely adopted and used for its potential benefits in public.…”

Section: Introductionmentioning

confidence: 99%

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Li-Net: towards a smart Li-Fi vehicle network

Panhwar¹

2020

IJST

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Background/Objectives: Light Fidelity is popularly known as Li-Fi. This is a most recent technology that was driven by German physicist Harald Haas (1) in 2011. The technology was proposed during a global talk on Technology Entertainment Design on VLC communications. Visible light communications are optical ways of communication that network the LED for data transmission. The term Li-Fi uses VLC communication for the high-end communication that can be an alternative to Wi-Fi. The proposal of Harald Haas is comparable with IEEE 802.15.7 that is the fully dual directional and networked standard built for 802.11. Li-Fi applications are featured for their comparison with other technologies like Wireless fidelity and their general use for LAN. Materials and methods: However, the optimality of the proposed Li-Fi is within highly dense areas where Wi-Fi faces interfaces and radio interferences are no good for complimentary performance goals of the communication standard. Li-Fi proves to be better in bandwidth, connectivity and secure when the higher speeds above 1Gbps are achieved. Finding/novelty : This study outlines the characteristics of Li-Fi and describes its potential use in a smart traffic net. The smart traffic net is the future of the transport system that is based on Li-Fi. Therefore, this is called Li-Net in this article. Li-Net is a modified VaNet that uses Li-Fi for V2V and V2I communication. The leveraging of Low cost LEDs and other lighting units have lots of opportunities that can help the Li-Fi to get over Wi-Fi.

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Section: Results Comparison With Trivial Vanet Simulationmentioning

confidence: 99%

Section: B Communication Patterns In Li-fi Vehicle Network (Li-netmentioning

confidence: 99%

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Li-Net: towards a smart Li-Fi vehicle network

Panhwar¹

2020

IJST

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“…More recent works focused on upper layer solutions to transform VLC into a multi-user, scalable and fully networked wireless technology. These address medium access [29,30], interference management [31], handover techniques [32] and resource allocation [33].…”

Section: Introductionmentioning

confidence: 99%

Channel modelling for indoor visible light communications

Miramirkhani

Uysal

2020

Phil. Trans. R. Soc. A.

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Visible light communication (VLC) allows the dual use of light-emitting diodes (LEDs) for wireless communication purposes in addition to their primary purpose of illumination. As in any other communication system, realistic channel modelling is a key for VLC system design, analysis and testing. In this paper, we present a comprehensive survey of indoor VLC channel models. In order to set the background, we start with an overview of infrared (IR) channel modelling, which has received much attention in the past, and highlight the differences between visible and IR optical bands. In the light of these, we present a comparative discussion of existing VLC channel modelling studies and point out the relevant advantages and disadvantages. Then, we provide a detailed description of a site-specific channel modelling approach based on non-sequential ray tracing that precisely captures the optical propagation characteristics of a given indoor environment. We further present channel models for representative deployment scenarios developed through this approach that were adopted by the Institute of Electrical and Electronics Engineering (IEEE) as reference channel models. Finally, we consider mobile VLC scenarios and investigate the effect of receiver location and rotation for a mobile indoor user. This article is part of the theme issue ‘Optical wireless communication’.

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“…Herald Haas and his research team at the University of Edinburgh proposed the concept of "light fidelity (Li-Fi)", defined as "the subset of VLC that exhibits highspeed, bidirectional, and fully networked communication". Li-Fi is considered as a "bright spot" for VLC applications, and it is expected to complement wireless fidelity (Wi-Fi) [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Bandwidth and Noise for Pre-Emphasis and Post-Equalization in Visible Light Communication

Yan

Mao

Xie

et al. 2020

IEICE Trans. Commun.

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This paper presents an analysis of the relationship between noise and bandwidth in visible light communication (VLC) systems. In the past few years, pre-emphasis and post-equalization techniques were proposed to extend the bandwidth of VLC systems. However, these bandwidth extension techniques also influence noise and sensitivity of the VLC systems. In this paper, first, we build a system model of VLC transceivers and circuit models of pre-emphasis and postequalization. Next, we theoretically compare the bandwidth and noise of three different transceiver structures comprising a single pre-emphasis circuit, a single post-equalization circuit and a combination of pre-emphasis and post-equalization circuits. Finally, we validate the presented theoretical analysis using experimental results. The result shows that for the same resonant frequency, and for high signal-to-noise ratio (S/N), VLC systems employing post-equalization or pre-emphasis have the same bandwidth extension ability. Therefore, a transceiver employing both the pre-emphasis and post-equalization techniques has a bandwidth √ 2 times the bandwidth of the systems employing only the pre-emphasis or post-equalization. Based on the theoretical analysis of noise, the VLC system with only active preemphasis shows the lowest noise, which is a good choice for low-noise systems. The result of this paper may provide a new perspective of noise and sensitivity of the bandwidth extension techniques in VLC systems.

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Dynamic Load Balancing With Handover in Hybrid Li-Fi and Wi-Fi Networks

Cited by 176 publications

References 21 publications

Li-Net: towards a smart Li-Fi vehicle network

Li-Net: towards a smart Li-Fi vehicle network

Channel modelling for indoor visible light communications

A Comparative Study on Bandwidth and Noise for Pre-Emphasis and Post-Equalization in Visible Light Communication

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