Non-rotationally Symmetric Freeform Fresnel-Lenses for Arbitrary Shaped Li-Fi Communication Channels

Kirrbach, René; Faulwaßer, Michael; Jakob, Benjamin

doi:10.1109/glc.2019.8864138

Cited by 6 publications

(6 citation statements)

References 16 publications

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“…Nowadays, parametrization and consecutive optimization are widely employed for generating a mapping φ [28,31,39,40]. Circular shaped FOV are formed with the mapping shown in Figure 5a.…”

Section: Optic Design Methodsmentioning

confidence: 99%

“…The performance merits from Equation 4 Since η TX contains no information concerning irradiance homogeneity, we additionally introduce the effective transmitter efficiency η TX eff . It is defined according to Equation (5) by using the minimum irradiance within the FOV E min [28,31]. The difference between η TX and η TX eff is called the inhomogeneity factor ζ TX H .…”

Section: Channel Modelmentioning

confidence: 99%

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Monolitic Hybrid Transmitter-Receiver Lens for Rotary On-Axis Communications

et al. 2020

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High-speed rotary communication links exhibit high complexity and require challenging assembly tolerances. This article investigates the use of optical wireless communications (OWC) for on-axis rotary communication scenarios. First, OWC is compared with other state-of-the-art technologies. Different realization approaches for bidirectional, full-duplex links are discussed. For the most promising approach, a monolithic hybrid transmitter-receiver lens is designed by ray mapping methodology. Ray tracing simulations are used to study the alignment-depended receiver power level and to determine the effect of optical crosstalk. Over a distance of 12.5 m m , the lens achieves an optical power level at the receiver of − 16.2 dBm to − 8.7 dBm even for misalignments up to 3 m m .

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“…Nowadays, parametrization and consecutive optimization are widely employed for generating a mapping φ [28,31,39,40]. Circular shaped FOV are formed with the mapping shown in Figure 5a.…”

Section: Optic Design Methodsmentioning

confidence: 99%

Section: Channel Modelmentioning

confidence: 99%

Monolitic Hybrid Transmitter-Receiver Lens for Rotary On-Axis Communications

et al. 2020

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“…A few works are devoted to the methods of designing refractive optical systems with freeform surfaces for radiation sources as well as radiation receivers within the Li-Fi communication systems. Thus, [21,22] demonstrate the potential of modern optics with freeform surfaces for Li-Fi technology.…”

Section: Introductionmentioning

confidence: 93%

The Application of Integral Source Model in The Design of Freeform Optics for Several Multidirectional Light Sources

Bogdanov

Potemin

Zhdanov

et al. 2020

Proceedings of the 30th International Conference on Computer Graphics and Machine Vision (GraphiCon 2020). Part 2

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One of the features of an intelligent transport system is the formation of communication channels between vehicles. Vehicle-to-vehicle communication will help reduce the number of road accidents. Li-Fi technology is considered as a method for communication. Li-Fi uses visible light for data transmission. A single source of radiation may not be sufficient to provide a certain signal level at the receiver, so multiple sources must be used. Also, signal transmission should be in all directions in the horizontal plane. The study addresses the problem of designing optical systems of circular radiation with several multidirectional sources. It proposes the modification of the ray mapping method for the task of designing optical elements for the Li-Fi wireless communication technology between vehicles. Also, it describes the algorithm for calculating optical systems of circular radiation for a signal source and signal receiver. Finally, the results of calculating and virtual prototyping of devices designed by the proposed method.

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“…However, the general case was also presented where ordinary commercial LED bulbs were analyzed in terms of their light output as compared to the receiver threshold. In [71], they also presented a simplified yet general case in which ordinary commercial LED bulbs were analyzed in terms of their light output as compared to the receiver threshold. In [72] the evaluation of three relevant scenarios with RF/LiFi hybrid networks was done to determine the improvement possibilities provided by this technology and was assessed for the potential of the respective realistic developments.…”

Section: Simulationmentioning

confidence: 99%

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

et al. 2021

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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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Non-rotationally Symmetric Freeform Fresnel-Lenses for Arbitrary Shaped Li-Fi Communication Channels

Cited by 6 publications

References 16 publications

Monolitic Hybrid Transmitter-Receiver Lens for Rotary On-Axis Communications

Monolitic Hybrid Transmitter-Receiver Lens for Rotary On-Axis Communications

The Application of Integral Source Model in The Design of Freeform Optics for Several Multidirectional Light Sources

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

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