Effects of rain rate with various integration times on ITU-R P530-18 attenuation prediction

Hassan, Mohammad Rofiqul and Islam, Md. Rafiqul and Habaebi, Mohamed Hadi and Budalal, Asma Ali and Mahfuz, M M Hasan and Badron, Khairayu and Ahmad Zabidi, Suriza (2026) Effects of rain rate with various integration times on ITU-R P530-18 attenuation prediction. In: 2025 10th International Conference on Computer and Communication Engineering (ICCCE), 26-27 August 2025, KOE, IIUM.

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Abstract

All wireless communication systems are progressively transitioning to higher frequencies, which are significantly degraded by rainfall in outdoor environments. A dependable RF system can be designed using a globally accepted approach for accurately predicting rain attenuation, based on local rain intensity measurements. The necessary rain intensity for attenuation prediction is often measured at a single location with a 1-minute integration period or converted from a longer integration time to a 1-minute duration. Recent measurements of rain intensity with a 10-second integration time indicate that intensity is not uniform across a 1-minute duration, hence affecting the statistics of rain intensity distribution and attenuation predictions when measured with an integration time shorter than 1 minute. This paper presents the influence of integration times on rain rate statistics and eventually it’s impact on rain attenuation prediction method. The distance factor proposed by ITU-R P530-18 is investigated by utilizing rain rate data collected with integration durations of 2 minutes, 1 minute, 30 seconds, 20 seconds, and 10 seconds. The effects are found not significant with any path length. Measured rain attenuation for a 300 m path at 26 GHz were compared to those predicted with rain rates measured in 5 integration times. For propagation paths longer than 1 km, the ITU-R model’s 1- minute integration time may be sufficient to “average out” the spatial inhomogeneity of the rain rate; however, for shorter propagation paths, the rain intensity with lower integration times reflect more accurate predictions.

Item Type:	Proceeding Paper (Plenary Papers)
Uncontrolled Keywords:	rain attenuation, prediction model, integration time, distance factor, effective rain rate, distance factor short-length, millimetre wave, terrestrial links
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr. Mohamed Hadi Habaebi
Date Deposited:	27 Apr 2026 12:15
Last Modified:	27 Apr 2026 12:15
Queue Number:	2026-04-Q2948
URI:	http://irep.iium.edu.my/id/eprint/128485

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