Multi-user techniques in visible light communications: A survey

Marshoud, Hanaa; Sofotasios, Paschalis C.; Muhaidat, Sami; Karagiannidis, George K.

doi:10.1109/acosis.2016.7843945

Cited by 21 publications

(18 citation statements)

References 59 publications

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“…The visible light communication (VLC) operates on LEDs to combine their two main advantages: energy efficient indoor/outdoor illumination [154] and high-speed data delivery [155], which is already being commercialized by many startups, e.g., Light Fidelity (Li-Fi) [156]. Since the VLC targets to serve multiple users concurrently, ongoing research efforts mostly concentrated on efficient resource sharing and multiple access schemes [157]. However, FSO communication focuses more on long-range and high data rate outdoor TOWC applications such as wireless X-hauling [158].…”

Section: A Narrow Beam Vs Wide Beam Light Sourcesmentioning

confidence: 99%

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Underwater optical wireless communications, networking, and localization: A survey

et al. 2019

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Underwater wireless communications can be carried out through acoustic, radio frequency (RF), and optical waves. Compared to its bandwidth limited acoustic and RF counterparts, underwater optical wireless communications (UOWCs) can support higher data rates at low latency levels. However, severe aquatic channel conditions (e.g., absorption, scattering, turbulence, etc.) pose great challenges for UOWCs and significantly reduce the attainable communication ranges, which necessitates efficient networking and localization solutions. Therefore, we provide a comprehensive survey on the challenges, advances, and prospects of underwater optical wireless networks (UOWNs) from a layer by layer perspective which includes: 1) Potential network architectures; 2) Physical layer issues including propagation characteristics, channel modeling, and modulation techniques 3) Data link layer problems covering link configurations, link budgets, performance metrics, and multiple access schemes; 4) Network layer topics containing relaying techniques and potential routing algorithms; 5) Transport layer subjects such as connectivity, reliability, flow and congestion control; 6) Application layer goals and state-of-the-art UOWN applications, and 7) Localization and its impacts on UOWN layers. Finally, we outline the open research challenges and point out the future directions for underwater optical wireless communications, networking, and localization research.

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Section: A Narrow Beam Vs Wide Beam Light Sourcesmentioning

confidence: 99%

“…However, it lacks energy efficiency which deteriorates with the increasing number of subcarriers [188]. Orthogonal FDMA (OFDMA) and interleaved FDMA (IFDMA) are two well-known schemes studied extensively for OWCs [157].…”

Section: Multiple Access Schemesmentioning

confidence: 99%

Underwater optical wireless communications, networking, and localization: A survey

et al. 2019

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“…In an effort to transform VLC into a multiuser, scalable, and fully networked wireless technology, more recent efforts have addressed multi-user VLC networking. Some initial survey papers on multiple access in VLC systems have already appeared in [19]- [21]. However, a large volume of work, beyond the covered literature in [19] has been reported and the scopes of [20], [21] were mainly limited to optical NOMA and multiple access schemes in VLC systems, respectively.…”

Section: Introductionmentioning

confidence: 99%

Multi-User Visible Light Communications: State-of-the-Art and Future Directions

et al. 2018

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Visible light communication (VLC) builds upon the dual use of existing lighting infrastructure for wireless data transmission. VLC has recently gained interest as cost-effective, secure, and energy-efficient wireless access technology particularly for indoor user-dense environments. While initial studies in this area are mainly limited to single-user point-to-point links, more recent efforts have focused on multi-user VLC systems in an effort to transform VLC into a scalable and fully networked wireless technology. In this paper, we provide a comprehensive overview of multi-user VLC systems discussing the recent advances on multi-user precoding, multiple access, resource allocation, and mobility management. We further provide possible directions of future research in this emerging topic.Index Terms-Visible light communication, multi-user communications, MIMO, precoding, non-orthogonal multiple access schemes, sum rate capacity, handover.

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“…Considering the general context of VLC applications, a general overview of the MU VLC techniques was presented in [2]. Also, a survey of different MA techniques for VLC applications was provided in [3] and [4]. Authors in [5] reviewed the non-orthogonal multiple access (NOMA) approach for VLC.…”

Section: Introductionmentioning

confidence: 99%

Multiple Access Techniques for VLC in Large Space Indoor Scenarios: A Comparative Study

Eltokhey

Khalighi

Ghassemlooy

2019

2019 15th International Conference on Telecommunications (ConTEL)

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The growing demand for high speed indoor wireless connectivity is among the driving forces for data transmission based on visible-light communications (VLC). For relatively large-space indoor scenarios, the development of appropriate spectrally-efficient multiple-access (MA) techniques enables efficient handling of multiple users, in particular, in dealing with the limited modulation bandwidth of the light-emitting diodes. In this paper, we present a comparative study between different MA techniques proposed in the recent literature for VLC networks. The most appropriate schemes for large-scale network deployments are further investigated in different scenarios to contrast their performance in terms of the achievable throughput.

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Multi-user techniques in visible light communications: A survey

Cited by 21 publications

References 59 publications

Underwater optical wireless communications, networking, and localization: A survey

Underwater optical wireless communications, networking, and localization: A survey

Multi-User Visible Light Communications: State-of-the-Art and Future Directions

Multiple Access Techniques for VLC in Large Space Indoor Scenarios: A Comparative Study

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