Measurement and Prediction of Two-Dimensional Fading Map in a Hallway

Hajime SUZUKI; Ananda S. MOHAN; Jian-Guo WANG; Hatsuo YABE

Measurement and Prediction of Two-Dimensional Fading Map in a Hallway

Hajime SUZUKI, Ananda S. MOHAN, Jian-Guo WANG, Hatsuo YABE

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As the demand of wireless personal communications networks increases, detailed chracteristics of indoor radio propagation in UHF band are required. In this paper, multipath fading characteristics at 1 GHz in an indoor mobil (walking speed) channel are investigated. By using a computer-controlled antenna scanner, signal strength was measured at 1400 points with a quarter wavelength resolution, which forms a two-dimensional fading map. The fading characteristics were found to be mainly dominated by the signals through the LOS path and the reflected paths due to two side-walls and one front-wall. It is analytically shown that middle-scale (over three wavelengths) fading is caused by the reflection from the side-walls, and periodical small-scale (equal to or less than a wavelength) fading is caused by the reflection from the front-wall. A software simulator based on geometric optics was developed in order to predict the measured fades. A modified algorithm for the two-dimensional ray launching technique which removes the necessity of checking the "multiple-counted rays" is presented. Comparison between measurements and predictions shows good agreement highlighting the usefulness of the two-dimensional simulator as a tool for channel design.

Publication: IEICE TRANSACTIONS on Communications Vol.E79-B No.9 pp.1192-1198

Publication Date: 1996/09/25

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Type of Manuscript: Special Section PAPER (Special Issue on Personal Communications)

Category: Radio propagation and channel modeling

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Hajime SUZUKI, Ananda S. MOHAN, Jian-Guo WANG, Hatsuo YABE, "Measurement and Prediction of Two-Dimensional Fading Map in a Hallway" in IEICE TRANSACTIONS on Communications, vol. E79-B, no. 9, pp. 1192-1198, September 1996, doi: .
Abstract: As the demand of wireless personal communications networks increases, detailed chracteristics of indoor radio propagation in UHF band are required. In this paper, multipath fading characteristics at 1 GHz in an indoor mobil (walking speed) channel are investigated. By using a computer-controlled antenna scanner, signal strength was measured at 1400 points with a quarter wavelength resolution, which forms a two-dimensional fading map. The fading characteristics were found to be mainly dominated by the signals through the LOS path and the reflected paths due to two side-walls and one front-wall. It is analytically shown that middle-scale (over three wavelengths) fading is caused by the reflection from the side-walls, and periodical small-scale (equal to or less than a wavelength) fading is caused by the reflection from the front-wall. A software simulator based on geometric optics was developed in order to predict the measured fades. A modified algorithm for the two-dimensional ray launching technique which removes the necessity of checking the "multiple-counted rays" is presented. Comparison between measurements and predictions shows good agreement highlighting the usefulness of the two-dimensional simulator as a tool for channel design.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e79-b_9_1192/_p

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@ARTICLE{e79-b_9_1192,
author={Hajime SUZUKI, Ananda S. MOHAN, Jian-Guo WANG, Hatsuo YABE, },
journal={IEICE TRANSACTIONS on Communications},
title={Measurement and Prediction of Two-Dimensional Fading Map in a Hallway},
year={1996},
volume={E79-B},
number={9},
pages={1192-1198},
abstract={As the demand of wireless personal communications networks increases, detailed chracteristics of indoor radio propagation in UHF band are required. In this paper, multipath fading characteristics at 1 GHz in an indoor mobil (walking speed) channel are investigated. By using a computer-controlled antenna scanner, signal strength was measured at 1400 points with a quarter wavelength resolution, which forms a two-dimensional fading map. The fading characteristics were found to be mainly dominated by the signals through the LOS path and the reflected paths due to two side-walls and one front-wall. It is analytically shown that middle-scale (over three wavelengths) fading is caused by the reflection from the side-walls, and periodical small-scale (equal to or less than a wavelength) fading is caused by the reflection from the front-wall. A software simulator based on geometric optics was developed in order to predict the measured fades. A modified algorithm for the two-dimensional ray launching technique which removes the necessity of checking the "multiple-counted rays" is presented. Comparison between measurements and predictions shows good agreement highlighting the usefulness of the two-dimensional simulator as a tool for channel design.},
keywords={},
doi={},
ISSN={},
month={September},}

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TY - JOUR
TI - Measurement and Prediction of Two-Dimensional Fading Map in a Hallway
T2 - IEICE TRANSACTIONS on Communications
SP - 1192
EP - 1198
AU - Hajime SUZUKI
AU - Ananda S. MOHAN
AU - Jian-Guo WANG
AU - Hatsuo YABE
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E79-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 1996
AB - As the demand of wireless personal communications networks increases, detailed chracteristics of indoor radio propagation in UHF band are required. In this paper, multipath fading characteristics at 1 GHz in an indoor mobil (walking speed) channel are investigated. By using a computer-controlled antenna scanner, signal strength was measured at 1400 points with a quarter wavelength resolution, which forms a two-dimensional fading map. The fading characteristics were found to be mainly dominated by the signals through the LOS path and the reflected paths due to two side-walls and one front-wall. It is analytically shown that middle-scale (over three wavelengths) fading is caused by the reflection from the side-walls, and periodical small-scale (equal to or less than a wavelength) fading is caused by the reflection from the front-wall. A software simulator based on geometric optics was developed in order to predict the measured fades. A modified algorithm for the two-dimensional ray launching technique which removes the necessity of checking the "multiple-counted rays" is presented. Comparison between measurements and predictions shows good agreement highlighting the usefulness of the two-dimensional simulator as a tool for channel design.
ER -