A Conducting Cylinder for Modeling Human Body Presence in Indoor Propagation Channel

Ghaddar, M.; Talbi, Larbi; Denidni, Tayeb A.; Sebak, A.

doi:10.1109/tap.2007.908563

Cited by 108 publications

(73 citation statements)

References 5 publications

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“…For example, a group of people filling a significant part of the cross section of a corridor can reduce the signal level behind them by a few tens of decibels. [8,9,10] The main factors influencing the character of electromagnetic wave propagation are the type of building structure and the location of the antenna. There are two main types of principally different buildings from a wave propagation point of view.…”

Section: Electromagnetic Wave Propagation Inside Buildingsmentioning

confidence: 99%

In-Building Radio Propagation at 900 MHZ in Multi Storied Building

Gupta¹,

Joshi²

2011

IJDPS

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Section: Electromagnetic Wave Propagation Inside Buildingsmentioning

confidence: 99%

In-Building Radio Propagation at 900 MHZ in Multi Storied Building

Gupta¹,

Joshi²

2011

IJDPS

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“…Several scholars reported the diffraction and scattering of a high frequency wave by a cylinder block [9,10]. An approximate model was proposed in [11], in which an indoor human body was substituted by a conducting circular cylinder at microwave frequencies. Several scientists have analyzed the curved edge diffraction and wedge diffraction, and deduced the received electric field in the shadow region [12,13].…”

Section: Introductionmentioning

confidence: 99%

The Diffraction Research of Cylindrical Block Effect Based on Indoor 45 GHz Millimeter Wave Measurements

2017

Information

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Abstract:In this paper, four kinds of block diffraction models were proposed on the basis of the uniform geometrical theory of diffraction, and these models were validated by experiments with 45 GHz millimeter wave in the laboratory. The results are in agreement with the theoretical analysis. Some errors exist in the measurement results because of the unsatisfactory experimental environment. Single conducting cylindrical block measurement error was less than 0.5 dB, and single man block measurement error in the school laboratory was less than 1 dB, while in the factory laboratory environment, the peak to peak error reached 1.6 dB. Human body block attenuation was about 5.9-9.2 dB lower than that of the single conducting cylinder. A human body and a conducting cylinder were used together as a block in model (c) and model (d), but the positions of the cylinder in the two models were different. The measurement results showed that the attenuation of model (d) is about 3 dB higher than that of model (c).

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“…Only the actual geometry of the orchard such as positions, diameters of the trees, and properties of the ground are required in the analytical procedure. The UTD solution has been widely used in the propagation predictions [1,5,9,10] and [13][14][15] under an assumption that the surface is perfectly electric conductor (PEC). However, the PEC surface model is efficient when used in the case of strong reflection and diffraction from the obstacle.…”

Section: Introductionmentioning

confidence: 99%

Path-Loss Prediction of Radio Wave Propagation in an Orchard by Using Modified Utd Method

Phaebua¹,

Phongcharoenpanich²,

Krairiksh³

et al. 2012

PIER

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Abstract-In this paper, the proposed theoretical path-loss prediction procedure and measured results of radio wave propagation in an orchard environment are presented. The path-loss prediction of wireless sensor network (WSN) in a durian (Durio zibethinus Murray) orchard is chosen to be an example of this study. The threedimensional (3-D) modified uniform geometrical theory of diffraction (UTD) for curved impedance surface and the complex source point (CSP) technique for source modeling are employed for theoretical path-loss prediction in this paper. The orchard scenario is modeled using canonical geometries of UTD, such as a dielectric flat surface and cylindrical structures with an impedance surface to respectively represent ground and trees. Moreover, since the wireless sensor node is attached to the outside peel of a hanging durian fruit, the fruit partially acts as a wireless sensor node. Therefore, to obtain greater accuracy in the source radiation pattern, the Gaussian beam (GB) expansion via the CSP technique is used for source modeling. The path loss prediction from the proposed numerical procedure and the measured results are in good agreement. The proposed numerical procedure to calculate the path loss from actual scenario of the orchard is useful for network planning such as the pre-harvesting WSN system and other orchard scenarios.

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A Conducting Cylinder for Modeling Human Body Presence in Indoor Propagation Channel

Cited by 108 publications

References 5 publications

In-Building Radio Propagation at 900 MHZ in Multi Storied Building

In-Building Radio Propagation at 900 MHZ in Multi Storied Building

The Diffraction Research of Cylindrical Block Effect Based on Indoor 45 GHz Millimeter Wave Measurements

Path-Loss Prediction of Radio Wave Propagation in an Orchard by Using Modified Utd Method

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