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• W2155839776 abstract "This study builds on the earlier work by Odedina and Afullo on Multipath fading in Durban. Their work was based on multipath measurements in Durban over a 6.73km Line-of-Sight (LOS) link. This submission uses the geoclimatic factor approach and ITU-R recommendations P530-14 to obtain the multipath fading occurrence in flve cities in South Africa, including Durban. Three-year radiosonde data is used in estimating the percentage of time that a certain fade depth is exceeded and hence outage probability due to atmospheric multipath propagation, assuming the given fade depth leads to the received signal falling below the squelch level. We employ the Inverse Distance Square technique to estimate point refractivity gradient not exceeded for 1% of the time in the lowest 65m above the ground for flve locations within South Africa. Standard error of the mean and confldence interval for both annual averages and seasonal averages of point refractivity gradient is calculated to re∞ect possible deviation in the given readings. These values of point refractivity gradient obtained are used in determining the geoclimatic factor K. The results presented show monthly, seasonal and annual variation of both point refractivity gradient and geoclimatic factor K. The results conflrm that the geoclimatic factor K is region based. The percentage of time a given fade depth is exceeded for a single frequency increases rapidly with increasing path length. This is due to the fact that as the path length increases so do the multiple re∞ections leading to multipath propagation, which can result in either signal enhancement or multipath fading. A comparison of fade depth and outage probabilities is made with the earlier work in Durban and Rwanda in Central Africa." @default.
• W2155839776 created "2016-06-24" @default.
• W2155839776 creator A5027026595 @default.
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• W2155839776 date "2013-01-01" @default.
• W2155839776 modified "2023-09-25" @default.
• W2155839776 title "STATISTICAL ESTIMATION OF FADE DEPTH AND OUTAGE PROBABILITY DUE TO MULTIPATH PROPAGATION IN SOUTHERN AFRICA" @default.
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• W2155839776 doi "https://doi.org/10.2528/pierb12101212" @default.
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