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Rain fade slope model for terrestrial microwave links

Published online by Cambridge University Press:  07 January 2020

Jalel Chebil*
Affiliation:
ISTLS, NOCCS Laboratory, University of Sousse, Sousse, Tunisia
Md. Rafiqul Islam
Affiliation:
ECE Department, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Al-Hareth Zyoud
Affiliation:
ECE Department, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Mohamed Hadi Habaebi
Affiliation:
ECE Department, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Hassan Dao
Affiliation:
Faculty of Engineering, ECE Department, Princess of Naradhiwas University, Narathiwat, Thailand
*
Author for correspondence: Jalel Chebil, E-mail: chebil8@hotmail.com

Abstract

The dynamic characteristic of rain fade slope is one important factor in determining the availability of a communication system, and it is very useful in the design of fade countermeasures. In the literature, many models were proposed for rain fade slope for earth-to-satellite links. However, there are no models available for rain fade point to point terrestrial microwave links. This paper proposes a new model for the estimation of rain fade slope statistics for terrestrial microwave links in tropical regions. First, the ITU-R model for rain fade slope for earth-to-satellite link was compared with the corresponding statistics obtained from rain attenuation data measured from three terrestrial links in Malaysia. It is found that the expression of its distribution and its standard deviation should be modified. This leads to the derivation of the proposed rain fade slope model based on the statistics of one link. Then, it is tested using the remaining data and its results were very close to the measured statistics for all attenuation levels higher than 1 dB. Moreover, the model was validated using the chi-square goodness-of-fit test.

Information

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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