A Photon Modeling Method for the Characterization of Indoor Optical Wireless Communication

Lee, Haeng-Seon

doi:10.2528/pier09030506

Cited by 30 publications

(15 citation statements)

References 22 publications

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“…Deterministic methods [41][42][43][44][45][46][47] are based on numerical approaches to the resolution of Maxwell's equations, such as ray launching and ray tracing, or full-wave simulation techniques (method of moment (MoM), finite difference time domain (FDTD) [48], FITD, etc.). These methods are precise but are time-consuming to inherent computational complexity.…”

Section: Definition Of Simulation Scenarios and Resultsmentioning

confidence: 99%

Evaluation of Electromagnetic Dosimetry of Wireless Systems in Complex Indoor Scenarios With Human Body Interaction

Aguirre¹,

Arpon²,

Azpilicueta³

et al. 2012

PIER B

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Abstract-In this work, the influence of human body within the estimation of dosimetric values is analyzed. A simplified human body model, including the dispersive nature of material parameters of internal organs, skin, muscle, bones and other elements has been implemented. Such a model has been included within an indoor scenario in which an in-house 3D ray launching code has been applied to estimate received power levels within the complete scenario. The results enhance previous dosimetric estimations, while giving insight on influence of human body model in power level distribution and enabling to analyze the impact in the complete volume of the scenario.

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Section: Definition Of Simulation Scenarios and Resultsmentioning

confidence: 99%

Evaluation of Electromagnetic Dosimetry of Wireless Systems in Complex Indoor Scenarios With Human Body Interaction

Aguirre¹,

Arpon²,

Azpilicueta³

et al. 2012

PIER B

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“…The impulse response is calculated from the individual reflections of walls and objects inside the room and there is an array of methods in the literature to compute the impulse response in optical intensity domain for a typical room layout. These methods include ray tracing [89,90], experimental measurements [28,91,92], simplified functional modeling [93,94], photon tracing [95] and Monte Carlo ray tracing methods [96][97][98][99]. While specular reflections are possible, the vast majority of reflections are diffuse since the dimensions of the surface roughness is on the order of the wavelength of light used in the link [95].…”

Section: Diffuse Indoor Ow Linksmentioning

confidence: 99%

A review of communication-oriented optical wireless systems

Borah

Boucouvalas

Davis

et al. 2012

J Wireless Com Network

188

104

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This article presents an overview of optical wireless (OW) communication systems that operate both in the short-(personal and indoor systems) and the long-range (outdoor and hybrid) regimes. Each of these areas is discussed in terms of (a) key requirements, (b) their application framework, (c) major impairments and applicable mitigation techniques, and (d) current and/or future trends. Personal communication systems are discussed within the context of point-to-point ultra-high speed data transfer. The most relevant application framework and related standards are presented, including the next generation Giga-IR standard that extends personal communication speeds to over 1 Gb/s. As far as indoor systems are concerned, emphasis is given on modeling the dispersive nature of indoor OW channels, on the limitations that dispersion imposes on user mobility and dispersion mitigation techniques. Visible light communication systems, which provide both illumination and communication over visible or hybrid visible/ infrared LEDs, are presented as the most important representative of future indoor OW systems. The discussion on outdoor systems focuses on the impact of atmospheric effects on the optical channel and associated mitigation techniques that extend the realizable link lengths and transfer rates. Currently, outdoor OW is commercially available at 10 Gb/s Ethernet speeds for Metro networks and Local-Area-Network interconnections and speeds are expected to increase as faster and more reliable optical components become available. This article concludes with hybrid optical wireless/radio-frequency (OW/RF) systems that employ an additional RF link to improve the overall system reliability. Emphasis is given on cooperation techniques between the reliable RF subsystem and the broadband OW system.

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“…At present, the propagation prediction model can be mainly divided into two categories: one is statistical model, and the other is deterministic model. Several statistical [3][4][5] and deterministic models [6][7][8][9][10][11][12] have been reported in the literature for the estimation of a variety of signal-propagation characteristics in urban environment. The most widely used statistical models are based on closed mathematical formulas, obtained using statistical analysis of measurements taken in the area of interest.…”

Section: Introductionmentioning

confidence: 99%

A Quasi Three-Dimensional Ray Tracing Method Based on the Virtual Source Tree in Urban Microcellular Environments

Liu¹,

Guo²

2011

PIER

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Abstract-The increase in mobile communications traffic has led to heightened interest in the use of ray tracing (RT) methods together with digital building databases for obtaining more accurate and efficient propagation prediction in urban microcellular environments. In this paper, a novel quasi three-dimensional (3-D) RT algorithm is presented by taking into account the advantages of both the image theory (IT) and the shooting-and-bouncing ray (SBR) method. It is based on creating a new virtual source tree in which the relationship between neighbor nodes is a left-son-and-right-brother one. Our theoretical results of the signal path loss along the streets are compared with measurements which have been reported for city streets in Tokyo and Ottawa City for various values of the propagation parameters. The good agreement with these measurements indicates that our prediction model works well for such microcellular communication applications. The proposed method can provide the reliable theory basis for radio-wave propagation prediction and network planning in urban microcellular environments.

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A Photon Modeling Method for the Characterization of Indoor Optical Wireless Communication

Cited by 30 publications

References 22 publications

Evaluation of Electromagnetic Dosimetry of Wireless Systems in Complex Indoor Scenarios With Human Body Interaction

Evaluation of Electromagnetic Dosimetry of Wireless Systems in Complex Indoor Scenarios With Human Body Interaction

A review of communication-oriented optical wireless systems

A Quasi Three-Dimensional Ray Tracing Method Based on the Virtual Source Tree in Urban Microcellular Environments

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