IEICE TRANSACTIONS on Communications
Path Loss Model for Low Antenna Heights in Residential Areas at Middle VHF Band
Summary :
A path loss model for low antenna heights below surrounding buildings in residential areas is presented to contribute to the construction of VHF band wireless systems. The model is constructed on the basis of measurement results at 167.65MHz, near center frequency at VHF band. Path loss characteristics in the middle VHF band are compared to those in bands above UHF. The dominant paths in bands above UHF include propagation paths below surrounding buildings, such as paths along roads. However, in the middle VHF band, these paths are instantly attenuated because their 1st Fresnel zone radius is larger than the average building height or road width. The dominant path in the middle VHF band is the over-roof propagation path, and the 1st Fresnel zone of the path is shielded by the buildings and the ground surface. The proposed path loss model has two features. First, it derives the effective height of the ground surface from the terrain profile of the buildings and the ground surface. Second, it uses formulas of a two-path model to take the shielding of the 1st Fresnel zone into account. Finally, it is shown that the proposed model is able to predict the path loss measurement results more accurately than the conventional model.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E97-B No.10 pp.2093-2101
- Publication Date
- 2014/10/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E97.B.2093
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems)
- Category
Authors
Motoharu SASAKI
NTT Corporation
Wataru YAMADA
NTT Corporation
Naoki KITA
NTT Corporation
Takatoshi SUGIYAMA
NTT Corporation
Keyword
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Motoharu SASAKI, Wataru YAMADA, Naoki KITA, Takatoshi SUGIYAMA, "Path Loss Model for Low Antenna Heights in Residential Areas at Middle VHF Band" in IEICE TRANSACTIONS on Communications,
vol. E97-B, no. 10, pp. 2093-2101, October 2014, doi: 10.1587/transcom.E97.B.2093.
Abstract: A path loss model for low antenna heights below surrounding buildings in residential areas is presented to contribute to the construction of VHF band wireless systems. The model is constructed on the basis of measurement results at 167.65MHz, near center frequency at VHF band. Path loss characteristics in the middle VHF band are compared to those in bands above UHF. The dominant paths in bands above UHF include propagation paths below surrounding buildings, such as paths along roads. However, in the middle VHF band, these paths are instantly attenuated because their 1st Fresnel zone radius is larger than the average building height or road width. The dominant path in the middle VHF band is the over-roof propagation path, and the 1st Fresnel zone of the path is shielded by the buildings and the ground surface. The proposed path loss model has two features. First, it derives the effective height of the ground surface from the terrain profile of the buildings and the ground surface. Second, it uses formulas of a two-path model to take the shielding of the 1st Fresnel zone into account. Finally, it is shown that the proposed model is able to predict the path loss measurement results more accurately than the conventional model.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.2093/_p
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@ARTICLE{e97-b_10_2093,
author={Motoharu SASAKI, Wataru YAMADA, Naoki KITA, Takatoshi SUGIYAMA, },
journal={IEICE TRANSACTIONS on Communications},
title={Path Loss Model for Low Antenna Heights in Residential Areas at Middle VHF Band},
year={2014},
volume={E97-B},
number={10},
pages={2093-2101},
abstract={A path loss model for low antenna heights below surrounding buildings in residential areas is presented to contribute to the construction of VHF band wireless systems. The model is constructed on the basis of measurement results at 167.65MHz, near center frequency at VHF band. Path loss characteristics in the middle VHF band are compared to those in bands above UHF. The dominant paths in bands above UHF include propagation paths below surrounding buildings, such as paths along roads. However, in the middle VHF band, these paths are instantly attenuated because their 1st Fresnel zone radius is larger than the average building height or road width. The dominant path in the middle VHF band is the over-roof propagation path, and the 1st Fresnel zone of the path is shielded by the buildings and the ground surface. The proposed path loss model has two features. First, it derives the effective height of the ground surface from the terrain profile of the buildings and the ground surface. Second, it uses formulas of a two-path model to take the shielding of the 1st Fresnel zone into account. Finally, it is shown that the proposed model is able to predict the path loss measurement results more accurately than the conventional model.},
keywords={},
doi={10.1587/transcom.E97.B.2093},
ISSN={1745-1345},
month={October},}
Copy
TY - JOUR
TI - Path Loss Model for Low Antenna Heights in Residential Areas at Middle VHF Band
T2 - IEICE TRANSACTIONS on Communications
SP - 2093
EP - 2101
AU - Motoharu SASAKI
AU - Wataru YAMADA
AU - Naoki KITA
AU - Takatoshi SUGIYAMA
PY - 2014
DO - 10.1587/transcom.E97.B.2093
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2014
AB - A path loss model for low antenna heights below surrounding buildings in residential areas is presented to contribute to the construction of VHF band wireless systems. The model is constructed on the basis of measurement results at 167.65MHz, near center frequency at VHF band. Path loss characteristics in the middle VHF band are compared to those in bands above UHF. The dominant paths in bands above UHF include propagation paths below surrounding buildings, such as paths along roads. However, in the middle VHF band, these paths are instantly attenuated because their 1st Fresnel zone radius is larger than the average building height or road width. The dominant path in the middle VHF band is the over-roof propagation path, and the 1st Fresnel zone of the path is shielded by the buildings and the ground surface. The proposed path loss model has two features. First, it derives the effective height of the ground surface from the terrain profile of the buildings and the ground surface. Second, it uses formulas of a two-path model to take the shielding of the 1st Fresnel zone into account. Finally, it is shown that the proposed model is able to predict the path loss measurement results more accurately than the conventional model.
ER -
English
