Model for Estimating Effects of Human Body Shadowing in High Frequency Bands

Ngochao TRAN; Tetsuro IMAI; Yukihiko OKUMURA

doi:10.1587/transcom.E98.B.773

Model for Estimating Effects of Human Body Shadowing in High Frequency Bands

Ngochao TRAN, Tetsuro IMAI, Yukihiko OKUMURA

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In this paper, we propose a simple model for estimating the effects of human body shadowing (HBS) in high frequency bands. The model includes two factors: the shadowing width (SW), which is the width of the area with shadowing loss values greater than 0dB, and the median shadowing loss value (MSLV), which is obtained by taking the median of the shadowing loss values within the SW. These factors are determined by formulas using parameters, i.e. frequency, distance between the base station (BS) and human body, distance between the terminal and human body, BS antenna height, and direction of the human body. To obtain the formulas, a method for calculating the effects of HBS based on the uniform theory of diffraction (UTD) and a human body model comprising lossy dielectric flat plates is proposed and verified. Then, the general forms of the formulas are predicted using the theory of knife-edge diffraction (KE). A series of computer simulations using the proposed calculation method with random changes in parameters is conducted to verify the general formulas and derive coefficients for these formulas through regression formulas.

Publication: IEICE TRANSACTIONS on Communications Vol.E98-B No.5 pp.773-782

Publication Date: 2015/05/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E98.B.773

Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Radio Propagation)

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Authors

Ngochao TRAN
  NTT DOCOMO, INC.
Tetsuro IMAI
  NTT DOCOMO, INC.
Yukihiko OKUMURA
  NTT DOCOMO, INC.

Keyword

human body shadowing, high frequency bands, KE, UTD

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Ngochao TRAN, Tetsuro IMAI, Yukihiko OKUMURA, "Model for Estimating Effects of Human Body Shadowing in High Frequency Bands" in IEICE TRANSACTIONS on Communications, vol. E98-B, no. 5, pp. 773-782, May 2015, doi: 10.1587/transcom.E98.B.773.
Abstract: In this paper, we propose a simple model for estimating the effects of human body shadowing (HBS) in high frequency bands. The model includes two factors: the shadowing width (SW), which is the width of the area with shadowing loss values greater than 0dB, and the median shadowing loss value (MSLV), which is obtained by taking the median of the shadowing loss values within the SW. These factors are determined by formulas using parameters, i.e. frequency, distance between the base station (BS) and human body, distance between the terminal and human body, BS antenna height, and direction of the human body. To obtain the formulas, a method for calculating the effects of HBS based on the uniform theory of diffraction (UTD) and a human body model comprising lossy dielectric flat plates is proposed and verified. Then, the general forms of the formulas are predicted using the theory of knife-edge diffraction (KE). A series of computer simulations using the proposed calculation method with random changes in parameters is conducted to verify the general formulas and derive coefficients for these formulas through regression formulas.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.773/_p

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@ARTICLE{e98-b_5_773,
author={Ngochao TRAN, Tetsuro IMAI, Yukihiko OKUMURA, },
journal={IEICE TRANSACTIONS on Communications},
title={Model for Estimating Effects of Human Body Shadowing in High Frequency Bands},
year={2015},
volume={E98-B},
number={5},
pages={773-782},
abstract={In this paper, we propose a simple model for estimating the effects of human body shadowing (HBS) in high frequency bands. The model includes two factors: the shadowing width (SW), which is the width of the area with shadowing loss values greater than 0dB, and the median shadowing loss value (MSLV), which is obtained by taking the median of the shadowing loss values within the SW. These factors are determined by formulas using parameters, i.e. frequency, distance between the base station (BS) and human body, distance between the terminal and human body, BS antenna height, and direction of the human body. To obtain the formulas, a method for calculating the effects of HBS based on the uniform theory of diffraction (UTD) and a human body model comprising lossy dielectric flat plates is proposed and verified. Then, the general forms of the formulas are predicted using the theory of knife-edge diffraction (KE). A series of computer simulations using the proposed calculation method with random changes in parameters is conducted to verify the general formulas and derive coefficients for these formulas through regression formulas.},
keywords={},
doi={10.1587/transcom.E98.B.773},
ISSN={1745-1345},
month={May},}

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TY - JOUR
TI - Model for Estimating Effects of Human Body Shadowing in High Frequency Bands
T2 - IEICE TRANSACTIONS on Communications
SP - 773
EP - 782
AU - Ngochao TRAN
AU - Tetsuro IMAI
AU - Yukihiko OKUMURA
PY - 2015
DO - 10.1587/transcom.E98.B.773
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2015
AB - In this paper, we propose a simple model for estimating the effects of human body shadowing (HBS) in high frequency bands. The model includes two factors: the shadowing width (SW), which is the width of the area with shadowing loss values greater than 0dB, and the median shadowing loss value (MSLV), which is obtained by taking the median of the shadowing loss values within the SW. These factors are determined by formulas using parameters, i.e. frequency, distance between the base station (BS) and human body, distance between the terminal and human body, BS antenna height, and direction of the human body. To obtain the formulas, a method for calculating the effects of HBS based on the uniform theory of diffraction (UTD) and a human body model comprising lossy dielectric flat plates is proposed and verified. Then, the general forms of the formulas are predicted using the theory of knife-edge diffraction (KE). A series of computer simulations using the proposed calculation method with random changes in parameters is conducted to verify the general formulas and derive coefficients for these formulas through regression formulas.
ER -