Optimized LEDs Footprinting for Indoor Visible Light Communication Networks

Pergoloni, Stefano; Biagi, Mauro; Colonnese, Stefania; Cusani, Roberto; Scarano, Gaetano

doi:10.1109/lpt.2015.2500360

Cited by 38 publications

(26 citation statements)

References 10 publications

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“…The problem of optimal LEDs deployment can be addressed according to the following considerations [5]. Having too few attocells (as limit, only one) leads to share the resource among users so leading to data rate reduction.…”

Section: Attocells Minimization and Leds Placementmentioning

confidence: 99%

“…The use of optical attocells [4] in indoor environments consists that each lightemitting diode (LED) acts as an optical access point (AP) that serves multiple users within its coverage. Furthermore, the use of several attocells is expected to better cover the indoor area, and allows a better resource sharing among users, than a configuration with a limited number of LEDs [5]. However, the deployment of LEDs should be well considered in order to use the optimal number of attocells.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, a large number of attocells in a room is not useful, as it can cause interference among neighbouring lighting cells; as well as a poor number of LEDs suffers to guarantee the whole illumination/data coverage, causing outage to users attempting to access the medium. Moreover, having several attocells may ask to activate handover procedures very frequently so reducing network throughput [5].…”

Section: Introductionmentioning

confidence: 99%

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Optimal LED placement in indoor VLC networks

Vegni¹,

Biagi²

2019

Opt. Express

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In the upcoming 5G systems, the use of optical attocells will be largely exploited, with the aim of extending connectivity to multiple users while reducing coverage holes in indoor environments. The deployment of light emitting diodes (LEDs) should be well considered in order to use the optimal number of attocells to guarantee both illumination and connectivity, as a large and unnecessary number of attocells in a room is not useful and can cause interference among neighboring lighting cells. On the other hand, a low number of LEDs may not guarantee the whole illumination/data coverage, causing outage to users attempting to access the medium. In this paper, we investigate the problem of optimal LEDs placement in indoor environments, subject to constraints on illumination and outage based on user data rate. Two approaches are introduced, focusing on (i) the minimization of the number of LEDs to be used to provide required services and (ii) the maximization of the number of users to be served with a fixed number of LEDs, respectively. Numerical results are carried out in different room scenarios, which distinguish from the probability density function of users laying in such environments.

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Section: Attocells Minimization and Leds Placementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimal LED placement in indoor VLC networks

Vegni¹,

Biagi²

2019

Opt. Express

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“…Recently, VLC has attracts many researchers [2][3][4]. In this systems, light emitting diode (LED) is typically used as transmitter [5].…”

Section: Introductionmentioning

confidence: 99%

3D Indoor Localization using Visible Light Communications

Hajihoseini¹,

Dargahi²,

Ghorashi³

2016

International Journal of Innovative Research in Electrical, Ele

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Due to increasing demand for wireless spectrum and considering its scarcity, wireless optical communications technology is expected to be used in future systems. Recently, visible light communications (VLC) is introduced as an alternative to the global positioning system (GPS) to be used inside the buildings where GPS does not work properly. In this paper, a new method for localization of an optical receiver is proposed in which, information received from indoor optical transmitters is used. In this method, first the angle of arrival of received signal is calculated, using the field of view of optical transmitter and then least square estimation (LSE) is used to localize the receiver in 3 dimensional indoor environment. Simulation results show that we the location of optical receiver in 3D indoor environment can be estimated using 4 visual access pints with approximately 0.6 meters average error.

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“…increasingly popular since they can operate as lighting and communications systems simultaneously (Pathak et al 2015;Pergoloni et al 2016;Schmid et al 2016;Zhang et al 2015). Such communication is also carried out in the license-free spectrum and produces no electromagnetic interference.…”

mentioning

confidence: 99%

A fuzzy-PSO system for indoor localization based on visible light communications

et al. 2018

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Indoor positioning systems using Visible Light Communication (VLC) have potential applications in smart buildings, for instance, in developing economical, easy-touse, widely accessible positioning system based on Light Emitting Diodes (LEDs). Thus using VLCs, we introduce a new fuzzy-based system for indoor localization in this paper. The system processes data from transmitters (i.e., anchor nodes) and delivers the calculated position of a receiver. A Particle Swarm Optimization (PSO) technique is then employed to obtain the optimal configuration of the proposed Fuzzy Logic Controllers (FLCs). Specifically, the proposed PSO technique optimizes the membership functions of the FLCs by adjusting their range to achieve the best results regarding the localization reliability. We demonstrate the utility of the proposed approach using experiments.

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Optimized LEDs Footprinting for Indoor Visible Light Communication Networks

Cited by 38 publications

References 10 publications

Optimal LED placement in indoor VLC networks

Optimal LED placement in indoor VLC networks

3D Indoor Localization using Visible Light Communications

A fuzzy-PSO system for indoor localization based on visible light communications

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