A model that combines free-space loss (proportional to the square of distance d) and excess loss has been known to assess the microwave line-of-sight (LOS) path loss in street microcell environments. The excess loss represents the effects of shadowing obstacles. We measure the path loss at the 3.35, 8.45, and 15.75 GHz frequencies in an urban environment, and analyze the distance characteristics of the pass loss for mobile antenna heights of 2.7, 1.6, and 0.5 m. Results show that using a new model that bases on a dα formula instead of d2 in the conventional model produced a better fit to the measured data. They also show that lowering the mobile antenna to a height of 0. 5 m made it possible to virtually ignore the excess loss factor and, instead, use the dα formula to assess the path loss characteristics.
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Koichi TAKAHASHI, Hironari MASUI, Satoshi TAKAHASHI, Kouzou KAGE, Takehiko KOBAYASHI, "Path Loss Modeling of Line-of-Sight Microwave Urban Propagation with Low-Height Antenna Mobile Stations" in IEICE TRANSACTIONS on Electronics,
vol. E82-C, no. 7, pp. 1330-1333, July 1999, doi: .
Abstract: A model that combines free-space loss (proportional to the square of distance d) and excess loss has been known to assess the microwave line-of-sight (LOS) path loss in street microcell environments. The excess loss represents the effects of shadowing obstacles. We measure the path loss at the 3.35, 8.45, and 15.75 GHz frequencies in an urban environment, and analyze the distance characteristics of the pass loss for mobile antenna heights of 2.7, 1.6, and 0.5 m. Results show that using a new model that bases on a dα formula instead of d2 in the conventional model produced a better fit to the measured data. They also show that lowering the mobile antenna to a height of 0. 5 m made it possible to virtually ignore the excess loss factor and, instead, use the dα formula to assess the path loss characteristics.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e82-c_7_1330/_p
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@ARTICLE{e82-c_7_1330,
author={Koichi TAKAHASHI, Hironari MASUI, Satoshi TAKAHASHI, Kouzou KAGE, Takehiko KOBAYASHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Path Loss Modeling of Line-of-Sight Microwave Urban Propagation with Low-Height Antenna Mobile Stations},
year={1999},
volume={E82-C},
number={7},
pages={1330-1333},
abstract={A model that combines free-space loss (proportional to the square of distance d) and excess loss has been known to assess the microwave line-of-sight (LOS) path loss in street microcell environments. The excess loss represents the effects of shadowing obstacles. We measure the path loss at the 3.35, 8.45, and 15.75 GHz frequencies in an urban environment, and analyze the distance characteristics of the pass loss for mobile antenna heights of 2.7, 1.6, and 0.5 m. Results show that using a new model that bases on a dα formula instead of d2 in the conventional model produced a better fit to the measured data. They also show that lowering the mobile antenna to a height of 0. 5 m made it possible to virtually ignore the excess loss factor and, instead, use the dα formula to assess the path loss characteristics.},
keywords={},
doi={},
ISSN={},
month={July},}
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TY - JOUR
TI - Path Loss Modeling of Line-of-Sight Microwave Urban Propagation with Low-Height Antenna Mobile Stations
T2 - IEICE TRANSACTIONS on Electronics
SP - 1330
EP - 1333
AU - Koichi TAKAHASHI
AU - Hironari MASUI
AU - Satoshi TAKAHASHI
AU - Kouzou KAGE
AU - Takehiko KOBAYASHI
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E82-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 1999
AB - A model that combines free-space loss (proportional to the square of distance d) and excess loss has been known to assess the microwave line-of-sight (LOS) path loss in street microcell environments. The excess loss represents the effects of shadowing obstacles. We measure the path loss at the 3.35, 8.45, and 15.75 GHz frequencies in an urban environment, and analyze the distance characteristics of the pass loss for mobile antenna heights of 2.7, 1.6, and 0.5 m. Results show that using a new model that bases on a dα formula instead of d2 in the conventional model produced a better fit to the measured data. They also show that lowering the mobile antenna to a height of 0. 5 m made it possible to virtually ignore the excess loss factor and, instead, use the dα formula to assess the path loss characteristics.
ER -