Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz

Movement of objects due to wind and rain in the vicinity of fixed wireless access introduces an adverse environment for high frequency radio wave propagation. In recent years, fixed wireless access deployed in suburban and rural areas are surrounded by large number of trees and hills. Although the t...

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Main Author:	Muhammad, Nor Aishah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/34631/1/NorAishahMuhammadMFKE2012.pdf
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id	my-utm-ep.34631
record_format	uketd_dc
spelling	my-utm-ep.346312018-04-27T01:29:11Z Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz 2012-08 Muhammad, Nor Aishah TK Electrical engineering. Electronics Nuclear engineering Movement of objects due to wind and rain in the vicinity of fixed wireless access introduces an adverse environment for high frequency radio wave propagation. In recent years, fixed wireless access deployed in suburban and rural areas are surrounded by large number of trees and hills. Although the transmitter and receiver of fixed wireless access remain in stationary positions, movement of trees in this foliated fixed wireless access would scatter, diffract and absorb the wireless signal causing signal fading. In this study, the focus was on the measurement temporal scale of the received signal strength in foliated fixed wireless access operating at the 5.8 GHz frequency of the Unlicensed National Information Infrastructure band. Based on the temporal scale of the measured received signal strength profiles of three different links comprising one line-of-sight and two non line-of-sight links, it was observed that line-of-sight link worked well even when it rained. The existence of trees in the vicinity of the transmission path caused signal deterioration where the received signal strength faded from 3 dB to 16 dB as the rain intensity increased. The wetness in the trees caused by rain had affected the received signal strength. To characterize the measured received signal strength, statistical characterization of the combined effects of several typical weather phenomena often experienced in a tropical region was also presented. The Rician distribution was used to characterize the fast fading effect due to both wind and rain. A smaller K-factor of the distribution represented more intense wind and rain conditions. Meanwhile, Lognormal distribution was found to be suitable in describing the slow fading characteristics in a foliated channel. The work reported in this thesis has determined the effects of wind and rain in the deployment of fixed wireless access in foliated channel to ensure optimized links be provided for end users. 2012-08 Thesis http://eprints.utm.my/id/eprint/34631/ http://eprints.utm.my/id/eprint/34631/1/NorAishahMuhammadMFKE2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:69712?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Muhammad, Nor Aishah Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz
description	Movement of objects due to wind and rain in the vicinity of fixed wireless access introduces an adverse environment for high frequency radio wave propagation. In recent years, fixed wireless access deployed in suburban and rural areas are surrounded by large number of trees and hills. Although the transmitter and receiver of fixed wireless access remain in stationary positions, movement of trees in this foliated fixed wireless access would scatter, diffract and absorb the wireless signal causing signal fading. In this study, the focus was on the measurement temporal scale of the received signal strength in foliated fixed wireless access operating at the 5.8 GHz frequency of the Unlicensed National Information Infrastructure band. Based on the temporal scale of the measured received signal strength profiles of three different links comprising one line-of-sight and two non line-of-sight links, it was observed that line-of-sight link worked well even when it rained. The existence of trees in the vicinity of the transmission path caused signal deterioration where the received signal strength faded from 3 dB to 16 dB as the rain intensity increased. The wetness in the trees caused by rain had affected the received signal strength. To characterize the measured received signal strength, statistical characterization of the combined effects of several typical weather phenomena often experienced in a tropical region was also presented. The Rician distribution was used to characterize the fast fading effect due to both wind and rain. A smaller K-factor of the distribution represented more intense wind and rain conditions. Meanwhile, Lognormal distribution was found to be suitable in describing the slow fading characteristics in a foliated channel. The work reported in this thesis has determined the effects of wind and rain in the deployment of fixed wireless access in foliated channel to ensure optimized links be provided for end users.
format	Thesis
qualification_level	Master's degree
author	Muhammad, Nor Aishah
author_facet	Muhammad, Nor Aishah
author_sort	Muhammad, Nor Aishah
title	Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz
title_short	Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz
title_full	Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz
title_fullStr	Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz
title_full_unstemmed	Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz
title_sort	influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 ghz
granting_institution	Universiti Teknologi Malaysia, Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/34631/1/NorAishahMuhammadMFKE2012.pdf
_version_	1747816221537992704

Influences of wind and rain on radio wave propagation in foliated fixed wireless access at 5.8 GHz

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