Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia

Rain is the major source of attenuation for microwave propagation above 10 GHz. In tropical and equatorial regions where the rain intensity is higher, designing a terrestrial and earth-to-satellite microwave links is very critical and challenging at these frequencies. This paper presents the prelimi...

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Main Authors:	Ulaganathen, Kesavan, Islam, Md. Rafiqul, Tharek, A.R., ASSI, Mauro S.
Format:	Article
Language:	English English English
Published:	The Radioengineering Society 2014
Subjects:	TK5101 Telecommunication. Including telegraphy, radio, radar, television
Online Access:	http://irep.iium.edu.my/39092/ http://irep.iium.edu.my/39092/ http://irep.iium.edu.my/39092/1/2014_Radioengineering.pdf http://irep.iium.edu.my/39092/4/39092_Monthly%20and%20diurnal%20variability%20of%20rain%20rate%20and%20rain%20attenuation%20during%20the%20monsoon%20period%20in%20Malaysia_SCOPUS.pdf http://irep.iium.edu.my/39092/5/39092_Monthly%20and%20diurnal%20variability%20of%20rain%20rate%20and%20rain%20attenuation%20during%20the%20monsoon%20period%20in%20Malaysia_WoS.pdf

id	iium-39092
recordtype	eprints
spelling	iium-390922017-09-25T10:33:57Z http://irep.iium.edu.my/39092/ Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia Ulaganathen, Kesavan Islam, Md. Rafiqul Tharek, A.R. ASSI, Mauro S. TK5101 Telecommunication. Including telegraphy, radio, radar, television Rain is the major source of attenuation for microwave propagation above 10 GHz. In tropical and equatorial regions where the rain intensity is higher, designing a terrestrial and earth-to-satellite microwave links is very critical and challenging at these frequencies. This paper presents the preliminary results of rain effects in a 23 GHz terrestrial point-to-point communication link 1.3 km long. The experimental test bed had been set up at Skudai, Johor Bahru, Malaysia. In this area, a monsoon equatorial climate prevails and the rainfall rate can reach values well above 100 mm/h with significant monthly and diurnal variability. Hence, it is necessary to implement a mitigation technique for maintaining an adequate radio link performance for the action of very heavy rain. Since we now know that the ULPC (Up Link Power Control) cannot guarantee the desired performance, a solution based on frequency band diversity is proposed in this paper. Here, a secondary radio link operating in a frequency not affected by rain (C band for instance) is placed parallel with the main link. Under no rain or light rain conditions, the secondary link carries without priority radio signals. When there is an outage of the main link due to rain, the secondary link assumes the priority traffic. The outcome of the research shows a solution for higher operating frequencies during rainy events. The Radioengineering Society 2014-06 Article PeerReviewed application/pdf en http://irep.iium.edu.my/39092/1/2014_Radioengineering.pdf application/pdf en http://irep.iium.edu.my/39092/4/39092_Monthly%20and%20diurnal%20variability%20of%20rain%20rate%20and%20rain%20attenuation%20during%20the%20monsoon%20period%20in%20Malaysia_SCOPUS.pdf application/pdf en http://irep.iium.edu.my/39092/5/39092_Monthly%20and%20diurnal%20variability%20of%20rain%20rate%20and%20rain%20attenuation%20during%20the%20monsoon%20period%20in%20Malaysia_WoS.pdf Ulaganathen, Kesavan and Islam, Md. Rafiqul and Tharek, A.R. and ASSI, Mauro S. (2014) Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia. Radioengineering, 23 (2). pp. 754-757. ISSN 1210-2512 (P) 1805-9600 (O) http://www.radioeng.cz/search.htm
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TK5101 Telecommunication. Including telegraphy, radio, radar, television
spellingShingle	TK5101 Telecommunication. Including telegraphy, radio, radar, television Ulaganathen, Kesavan Islam, Md. Rafiqul Tharek, A.R. ASSI, Mauro S. Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia
description	Rain is the major source of attenuation for microwave propagation above 10 GHz. In tropical and equatorial regions where the rain intensity is higher, designing a terrestrial and earth-to-satellite microwave links is very critical and challenging at these frequencies. This paper presents the preliminary results of rain effects in a 23 GHz terrestrial point-to-point communication link 1.3 km long. The experimental test bed had been set up at Skudai, Johor Bahru, Malaysia. In this area, a monsoon equatorial climate prevails and the rainfall rate can reach values well above 100 mm/h with significant monthly and diurnal variability. Hence, it is necessary to implement a mitigation technique for maintaining an adequate radio link performance for the action of very heavy rain. Since we now know that the ULPC (Up Link Power Control) cannot guarantee the desired performance, a solution based on frequency band diversity is proposed in this paper. Here, a secondary radio link operating in a frequency not affected by rain (C band for instance) is placed parallel with the main link. Under no rain or light rain conditions, the secondary link carries without priority radio signals. When there is an outage of the main link due to rain, the secondary link assumes the priority traffic. The outcome of the research shows a solution for higher operating frequencies during rainy events.
format	Article
author	Ulaganathen, Kesavan Islam, Md. Rafiqul Tharek, A.R. ASSI, Mauro S.
author_facet	Ulaganathen, Kesavan Islam, Md. Rafiqul Tharek, A.R. ASSI, Mauro S.
author_sort	Ulaganathen, Kesavan
title	Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia
title_short	Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia
title_full	Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia
title_fullStr	Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia
title_full_unstemmed	Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia
title_sort	monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in malaysia
publisher	The Radioengineering Society
publishDate	2014
url	http://irep.iium.edu.my/39092/ http://irep.iium.edu.my/39092/ http://irep.iium.edu.my/39092/1/2014_Radioengineering.pdf http://irep.iium.edu.my/39092/4/39092_Monthly%20and%20diurnal%20variability%20of%20rain%20rate%20and%20rain%20attenuation%20during%20the%20monsoon%20period%20in%20Malaysia_SCOPUS.pdf http://irep.iium.edu.my/39092/5/39092_Monthly%20and%20diurnal%20variability%20of%20rain%20rate%20and%20rain%20attenuation%20during%20the%20monsoon%20period%20in%20Malaysia_WoS.pdf
first_indexed	2023-09-18T20:56:09Z
last_indexed	2023-09-18T20:56:09Z
_version_	1777410317969522688

Monthly and diurnal variability of rain rate and rain attenuation during the monsoon period in Malaysia

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