Design and Analysis of Optical Receiving Antenna for LED Visible Light Communication Based on Taguchi Method

Peng, Xing; Sun, Xiang; Lyu, Haoyu

doi:10.1109/access.2019.2961150

Cited by 9 publications

(4 citation statements)

References 28 publications

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“…The Taguchi method has been widely used in various industries, including manufacturing, engineering, and product development, to improve quality, reduce variability, and enhance overall performance. It provides a systematic and efficient approach to experimental design and optimization, making it a valuable tool for quality improvement initiatives [18][19][20][21][22]. For example, the Taguchi experimental design was applied to optimize the vacuum printing encapsulation process, where a combination of process parameters was considered, including the squeegee moving speed, printing delay time, and the number of squeegee printings [18].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the Taguchi experimental design was applied to optimize the vacuum printing encapsulation process, where a combination of process parameters was considered, including the squeegee moving speed, printing delay time, and the number of squeegee printings [18]. The Taguchi method combined with the analysis of variance was utilized to optimize the structure parameters of the receiving antenna [19]. The Taguchi method has also been used for parameter optimization in electrical machinery, such as optimizing geometric parameters and trigger positions of a coil gun [20] and optimizing the magnetic field density in a permanent magnet motor [21].…”

Section: Introductionmentioning

confidence: 99%

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Improvement in Laptop Heat Dissipation with Taguchi Method

Chang,

Chu,

Lin

2024

Electronics

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This paper aims to investigate the feasibility of using system power consumption as a factor to improve laptop heat dissipation. The problems due to the CPU overheating are addressed. Based on the Taguchi method, the laptop fan parameters can be optimized with firmware adjustments only. In the Taguchi analysis, the fan speed, system power, and debounce time are considered as control factors, while the Cinebench point is utilized to evaluate the CPU performance. Experimental results demonstrate that the proposed heat dissipation scheme effectively reduces the idle time of a laptop fan. The improvement in heat dissipation can reduce CPU performance degradation because of overheating. According to the best combination of control factors, there is approximately a 5% increase in CPU performance despite a 0.35% increment in power consumption. This paper highlights the effectiveness of optimizing laptop fan parameters through firmware adjustments to improve heat dissipation and mitigate CPU overheating issues. Moreover, the study highlights the delicate balance between power consumption and performance gains. While there may be a slight increase in power consumption associated with the optimized heat dissipation scheme, the observed improvements in CPU performance outweigh this incremental power usage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement in Laptop Heat Dissipation with Taguchi Method

Chang,

Chu,

Lin

2024

Electronics

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“…The major challenge is high computational cost incurred by a typically large number of EM analyses associated with numerical optimization procedures. This cost may be impractical even for local search (both gradient-based [22], [23], and derivative-free [24] procedures), and it becomes prohibitive in the case of global optimization, especially when using population-based metaheuristics [25]- [28]. Similar issues arise while solving uncertainty quantification problems such as statistical analysis [29] or tolerance-aware design [30].…”

Section: Introductionmentioning

confidence: 99%

Reduced-Cost Microwave Design Closure by Multi-Resolution EM Simulations and Knowledge-Based Model Management

2021

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Parameter adjustment through numerical optimization has become a commonplace of contemporary microwave engineering. Although circuit theory methods are ubiquitous in the development of microwave components, the initial designs obtained with such tools have to be further tuned to improve the system performance. This is particularly pertinent to miniaturized structures, where the cross-coupling effects cannot be adequately accounted for using equivalent networks. For the sake of reliability, design closure is normally performed using full-wave electromagnetic (EM) simulation models, which entails considerable computational expenses, often impractically excessive. Available mitigation techniques include acceleration of the conventional (e.g., gradient-based) routines using adjoint sensitivities or sparse sensitivity updates, surrogate-assisted and machine learning algorithms, the latter often combined with nature-inspired procedures. Another alternative is the employment of variable-fidelity simulations (e.g., space mapping, co-kriging), which is most often limited to two levels of accuracy (coarse/fine). This work discusses an EM model management approach coupled with trust-region gradient-based routine, which exploits problem-specific knowledge for continuous (multi-level) modification of the discretization density of the microwave structure at hand in the course of the optimization run. The optimization process is launched at the lowest discretization level, thereby allowing for low-cost exploitation of the knowledge about the device under study. Subsequently, based on the convergence indicators, the model fidelity is gradually increased to ensure reliability. The simulation fidelity selection is governed by the algorithm convergence indicators. Computational speedup (i.e., reduction in the number of EM simulations required by the optimization process to converge) is achieved by maintaining low resolution in the initial stages of the optimization run, whereas design quality is secured by eventually switching to the high-fidelity model when close to concluding the process. Numerical verification is carried out using two microstrip circuits, a dual-band power divider and a dual-band branch-line coupler, with the average savings of almost sixty percent when compared to single-fidelity optimization.

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“…A catadioptric-monolithic bi-flat and bi-parabolic lens of size 46 mm can concentrate the incident light from a FoV of 85 o to a miniaturized spot; however, it presents a loss of intensity when the Towards the use of re-configurable intelligent surfaces in VLC systems incidence is greater than 25 o . A design of spherical optical receiving antennas for VLC systems based on the Taguchi method provides a minimum spot of 3 mm with a 45 o FoV and a spherical diameter of about 6 mm [5]. The above state-of-art of VLC lens does not have the capability to dynamically steer the incident light beam, and hence limits the receiver's detection capabilities, especially when it rotates or moves.…”

mentioning

confidence: 99%

Toward the Use of Re-configurable Intelligent Surfaces in VLC Systems: Beam Steering

Ndjiongue

Ngatched

Dobre

et al. 2021

IEEE Wireless Commun.

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The emergence of visible light communication (VLC) technology as a solution to solve radio frequency impediments, such as spectrum shortage, is continuously appealing. In addition to its large and unlicensed bandwidth, VLC provides a high level of security in a closed room with zero radio frequency interference.However, loss of the VLC signal is experienced when the receiver rotates or moves. This challenge requires special solution for the integration into portable devices. On the other hand, re-configurable intelligent surface (RIS) is a technology exploited in radio frequency to solve dead zones and loss of signal. RIS elements are characterized by tunable physico-chemical characteristics including physical depth and refractive index. In this paper, we exploit these RIS attributes to steer the incident light beam and offer the VLC receiver a large range of rotation angle, while improving its signal detection capabilities. We show that instead of using convex, parabolic, or spherical lenses, adopting a meta-lens with artificial muscles or a thin-film crystal-liquid with embedded Titanium dioxide nano-disk, a VLC receiver can detect light rays at 90 o incidence angle with a high precision and considerable improvement in the detected light intensity, even with a miniaturized single photodetector.

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Design and Analysis of Optical Receiving Antenna for LED Visible Light Communication Based on Taguchi Method

Cited by 9 publications

References 28 publications

Improvement in Laptop Heat Dissipation with Taguchi Method

Improvement in Laptop Heat Dissipation with Taguchi Method

Reduced-Cost Microwave Design Closure by Multi-Resolution EM Simulations and Knowledge-Based Model Management

Toward the Use of Re-configurable Intelligent Surfaces in VLC Systems: Beam Steering

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