Enhancement of the QoS in an OFDMA/VLC system

Seguel, Fabián; Soto, Ismael; Iturralde, Daniel; Adasme, Pablo; Nuñez, Belarmino

doi:10.1109/csndsp.2016.7573906

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…We have given some examples of visual-MIMO communication systems. Other researchers [28][29][30] focus on the sustainability of the indoor VLC in heterogeneous network. They pointed out technical challenges like handover, resource management, interference minimization, and optimization of channel capacity in this field.…”

Section: Future Researchmentioning

confidence: 99%

Color-Independent Visible Light Communications Based on Color Space: State of the Art and Potentials

Kwon

Kim

et al. 2018

Electronics

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Color independency is an important factor in visible light communication (VLC) systems. This paper aims to review and summarize recent achievements in color-independent visible light communication based on color space, with the main focus being on color-space-based modulation (CSBM), termed as generalized color modulation (GCM), which allows VLC to adapt to any target color. The main advantages of GCM are its color independency, reasonable bit error rate (BER) performance during color variation, and dimming control. We also address our past research works that aimed to achieve a color-independent visual MIMO system by incorporating the advantages of GCM, which can lead to higher data rates over longer distances and improved performance, using image processing in addition to color independency. Finally, two case studies are introduced to demonstrate the potential applicability of a color-independent visual-MIMO system using color-space-based modulation techniques.

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Section: Future Researchmentioning

confidence: 99%

Color-Independent Visible Light Communications Based on Color Space: State of the Art and Potentials

Kwon

Kim

et al. 2018

Electronics

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“…In [11], Seguel et al investigated the subcarrier allocation to maximize the downlink VLC channel capacity. They modeled the resource allocation problem as a binary and constrained optimization problem and solved it using the Binary Cuckoo Search [12] and Genetic algorithm (GA) [13].…”

Section: Introductionmentioning

confidence: 99%

Resource Allocation for Visible Light Communication Systems Using Simulated Annealing Based on a Problem-Specific Neighbor Function

et al. 2019

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In this paper, we consider a visible light communication (VLC) system with direct currentbiased orthogonal frequency division multiplexing (DC-OFDM) and investigate resource allocation for a multi-user environment. Based on the user satisfaction index as a function of data rate, we aim to optimally determine the allocation of the users to different LEDs (acting as access points) and OFDM subcarriers. We propose a simulated annealing-based heuristic to maximize the average user satisfaction index. In an effort to make the proposed solution practically feasible, the runtime of the proposed heuristic is kept less than the channel coherence time, whose value is in order of tens of milliseconds. We evaluate the performance of the proposed heuristic algorithm in different scenarios that vary in the number of users, the number of LEDs, and the separation between users. Our results demonstrate that the proposed heuristic outperforms other wellknown heuristics (such as standard simulated annealing, iterative greedy, particle swarm optimization, and tabu search) while achieving good quality solutions within a short execution time, i.e., 40-80 ms.INDEX TERMS Visible light communications, resource allocation, optimization, simulated annealing, heuristics.

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Visible light communication networks under ring and tree topology constraints

Adasme

2017

Computer Standards & Interfaces

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Enhancement of the QoS in an OFDMA/VLC system

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Cited by 7 publications

References 17 publications

Color-Independent Visible Light Communications Based on Color Space: State of the Art and Potentials

Color-Independent Visible Light Communications Based on Color Space: State of the Art and Potentials

Resource Allocation for Visible Light Communication Systems Using Simulated Annealing Based on a Problem-Specific Neighbor Function

Visible light communication networks under ring and tree topology constraints

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