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Comparison of measured rain attenuation and ITU-R predictions on experimental microwave links in Malaysia

Published online by Cambridge University Press:  15 March 2011

Amuda Yusuf Abdulrahman ,
Tharek bin Abdulrahman ,
Sharul Kamal bin Abdulrahim  and
Ulaganathen Kesavan
Amuda Yusuf Abdulrahman*
Affiliation:
Wireless Communication Centre (WCC), Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia. Phone:  + 60132311015;  + 60196097007.
Tharek bin Abdulrahman
Affiliation:
Wireless Communication Centre (WCC), Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia. Phone:  + 60132311015;  + 60196097007.
Sharul Kamal bin Abdulrahim
Affiliation:
Wireless Communication Centre (WCC), Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia. Phone:  + 60132311015;  + 60196097007.
Ulaganathen Kesavan
Affiliation:
Wireless Communication Centre (WCC), Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia. Phone:  + 60132311015;  + 60196097007.
*
Corresponding author: A.Y. Abdulrahman Email: abdulrahman.yusuf@yahoo.com
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Abstract

This paper presents the results of direct rain attenuation measurements carried out on four experimental microwave links, installed at UTM, Malaysia. The links operate at frequencies of 15, 22, 26, and 38 GHz and the cumulative distribution function for different rain rates have been generated from the measured 4-year rain gauge data. The experimentally measured attenuation data have been compared with International Telecommunication Unior-R rain attenuation predictions; and it has been found that the latter have underestimated the measured values, especially at higher rain rates. The deviations have been modeled as a function of rain rate exceedances R%p. It is hoped that the study will provide useful information for estimation of rainfall attenuation on microwave links in tropical regions that have similar situation to Malaysia.

Keywords

Prediction ErrorsRain AttenuationRegression parametersWet Antenna Losses
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 3 , Issue 4 , August 2011 , pp. 477 - 483
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2011

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References

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