LiFi-Based D2D Communication in Industrial IoT

Ozyurt, Ahmet Burak; Popoola, Wasiu O.

doi:10.1109/jsyst.2022.3179183

Cited by 16 publications

(7 citation statements)

References 34 publications

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“…t−1 is the indirect SNR gain for link n when mirror m is assigned to link l. For link j, we calculate ∆F (−m,j,j) t by replacing ∆γ (+m,l,l) t with ∆γ (−m,j,j) t and γ (24), where ∆γ…”

Section: ∆Fmentioning

confidence: 99%

“…In [22], the authors consider the problem of optimizing the selection of RF or VLC bands for D2D. The authors in [23] and [24] develop an all light fidelity (LiFi) downlink and D2D system for industrial scenarios. The use of an all VLC downlink and D2D system poses problems for scenarios with humans present, as the D2D light-emitting diode (LED) emissions may cause stress to human eyes.…”

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confidence: 99%

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A Multi-Armed Bandit Algorithm for IRS-Aided VLC System Design With Device-to-Device Relays

Curry,

Borah

2024

IEEE Access

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This paper presents a communications framework to overcome the connectivity constraints due to the nonavailability of the line-of-sight transmissions in indoor optical communication systems. This nonavailability can arise for various reasons, such as blockages due to physical objects, unfavorable device orientations or large distances between the transmitter and the receiving devices. The proposed system utilizes multiple intelligent reflecting surface (IRS) arrays and device-to-device (D2D) communications. The D2D communication is realized using infrared (IR) light-emitting diodes (LEDs) with limited output power for eye safety. The performance of this system depends significantly on the assignment of the mirrors in the IRS arrays to the appropriate user links and a direct combinatorial assignment search is too complex to implement. The proposed approach identifies the assignment of each mirror in the IRS arrays as a multi-armed bandit (MAB) problem, and the assignment of all the mirrors together as a combinatorial MAB (CMAB) problem. Since a simultaneous movement of all the IRS mirrors during the implementation of the CMAB algorithm could cause frequent link disruptions, a CMAB algorithm with low disruptions (CMAB-LD) is proposed to obtain the best mirror assignment with low link disruptions. Simulation results demonstrate that the proposed algorithm can provide significant improvement in reward performance and the total reward increases by more than 100% over random mirror assignments when the channels are blocked with high probabilities. In small size problems, the proposed CMAB-LD is found to achieve the global optimal solution in just a few rounds of full arm explore operations.INDEX TERMS Visible light communication, intelligent reflecting surface, device-to-device communication, multi-armed bandit.

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Section: ∆Fmentioning

confidence: 99%

mentioning

confidence: 99%

A Multi-Armed Bandit Algorithm for IRS-Aided VLC System Design With Device-to-Device Relays

Curry,

Borah

2024

IEEE Access

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“…Let p m ∈ R 3 and v m ∈ R 3 be the known location and orientation vector, respectively, of the mth LED transmitter, with 3 and ϑ R ∈ R 3 be the UD's location and axis-angle vector, respectively, which are unknown, and x R is just the PD array centroid.…”

Section: A System Setupmentioning

confidence: 99%

“…Hence, it can be applied to many indoor scenarios, such as airports, train stations, factories, warehousing and other indoor spaces [3]. However, its potential for wireless localization is not fully exploited.…”

Section: Introductionmentioning

confidence: 99%

6-DoF Location-and-Pose Estimation Toward Integrated Visible Light Communication and Sensing: Algorithm Design and Performance Limits

Zhou,

Wang,

Shen

et al. 2024

IEEE Trans. Signal Process.

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Visible light communication (VLC) is envisioned as an important technique for short-range communications, but its potential for user device (UD) localization is not fully exploited, which is challenging due to diffuse-scattering interference and random fading. In this paper, we focus on the 6 degree-of-freedom (DoF) UD state estimation (i.e., 3D location and 3D pose angles) based on VLC. Specifically, a novel successive convex approximation (SCA)-based optimization algorithm is proposed, where UD location, pose angles and channel state are simultaneously estimated. Thus, the disturbance of random fading and diffusescattering interference for UD localization is alleviated via VLCassisted channel equalization, and hence our SCA-based 6-DoF state detection solution outperforms state-of-the-art baselines. In addition, a unified performance analysis framework is established for VLC-based 6-DoF state detection, and structured information models are exploited for tractable performance quantification. A closed-form Cramer-Rao lower bound on UD localization error and pose angle estimate error is established respectively, and the impact of measurement noise, scattering interference, bandwidth, the quantities of photodiodes and light-emitting-diodes, etc, on the VLC-based UD state detection performance is analysed. Our closed-form analysis cannot only shed lights on the performance limits of VLC-based 6D state detection, but also gain insights into the impact of system configuration and fading environments.

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“…The optical wireless-based LiFi channel includes two main parts which are line-of-sight (LOS) and non-line-ofsight (NLOS). In this work, only LOS is considered for LiFi network and the effect of NLOS from the walls and human shadowing are ignored because reflected signals are very week and only account for less than 3% of the total received power [15], [19]. Under these assumptions, the LOS channel gain {H u,j } j={1,...,K} in tier j for user u is given by [2]:…”

Section: B Lifi Channel Modelmentioning

confidence: 99%

Energy and Spectral Efficiency of Multi-Tier LiFi Networks

Ozyurt

Bian²,

Haas

et al. 2023

2023 IEEE Wireless Communications and Networking Conference (WCNC)

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In this paper, multi-tier LiFi networks are studied in terms of energy efficiency (EE) and spectral efficiency (SE), which are crucial metrics for LiFi system design. We derived a closed-form expression of the user association probability for different tiers using stochastic geometry based Poisson Voronoi Tessellation (PVT) LiFi network. The performance metrics of the network, EE and SE, are analyzed in terms of different parameters such as transmit power and Lambertian index. Performance evaluations and numerical results show that multi-tier LiFi networks have an optimum transmit power in which EE is maximized. Besides, increasing the transmit power does not increase SE after passing a threshold point. The resulting trade-off between EE and SE is presented.

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LiFi-Based D2D Communication in Industrial IoT

Cited by 16 publications

References 34 publications

A Multi-Armed Bandit Algorithm for IRS-Aided VLC System Design With Device-to-Device Relays

A Multi-Armed Bandit Algorithm for IRS-Aided VLC System Design With Device-to-Device Relays

6-DoF Location-and-Pose Estimation Toward Integrated Visible Light Communication and Sensing: Algorithm Design and Performance Limits

Energy and Spectral Efficiency of Multi-Tier LiFi Networks

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