@inproceedings{883d84228d754de4a2c09fc179997c40,
title = "Effects of lower sampling interval on rainfall queue characteristics over radio links in South Africa",
abstract = "Rain attenuation is a major problem on millimeter wave propagation especially around subtropical, tropical and equatorial regions in Africa. Previous research has determined that rainfall characteristics over sub-tropical and equatorial regions in Africa are essentially a queue process following an M/Ek/s/∞/FCFS queue discipline. Rainfall measurements consisting of 2000 observable rain spikes were retrieved from the disdrometer for the investigation of the queue parameters at 30-second sampling time in Durban (29°52'S, 30°58'E). The retrieved rainfall data is classified into four rain rate regimes namely: drizzle, shower, widespread and thunderstorm. Queue parameters required for rainfall traffic analysis - such as inter-arrival time and service time - are empirically determined to be Erlang-k distributed, whereas overlap time is Exponentially distributed. It is thus established that the queue discipline for the rainfall spikes over millimeter wave is Ek/Ek/s/∞/FCFS. Conclusively, rainfall events at 30-second and one-minute sampling behave as a semi-Markovian process. In this light, lower sampling time gives accurate results, since we see more rainfall spikes on the 30-second queue parameters.",
keywords = "Attenuation, Rainfall rate, Sampling time, Spike",
author = "Mazibuko, {Godfrey N.} and Afullo, {Thomas J.} and Alonge, {Akintunde A.}",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; IEEE AFRICON 2017 ; Conference date: 18-09-2017 Through 20-09-2017",
year = "2017",
month = nov,
day = "3",
doi = "10.1109/AFRCON.2017.8095486",
language = "English",
series = "2017 IEEE AFRICON: Science, Technology and Innovation for Africa, AFRICON 2017",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "227--231",
editor = "Cornish, {Darryn R.}",
booktitle = "2017 IEEE AFRICON",
address = "United States",
}