The IUP Journal of Telecommunications
Rain-Induced Attenuation at Ku-Band in a Tropical Region

Article Details
Pub. Date : August, 2020
Product Name : The IUP Journal of Telecommunications
Product Type : Article
Product Code : IJTC20820
Author Name : Olubusade Joseph E, Oyedum Onyedi D and Moses Abiodun S
Availability : YES
Subject/Domain : Arts & Humanities
Download Format : PDF Format
No. of Pages : 10

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Abstract

Communication at higher frequency bands has numerous benefits but susceptible to rain impairments. Rain-induced attenuation becomes more prominent as the carrier frequency and rain rate increase. Hence, precise knowledge of rain rate can help in predicting the level of rain-induced attenuation. The paper determines point cumulative rainfall rate at 0.1% of time exceedance and converts integration time from 5 min to 1 min. The specific and the total rain-induced attenuation were predicted at 0.1% of time exceedance from 12 GHz to 18 GHz for both horizontal and vertical polarizations. Lavergnat-Gole rain rate conversion model and ITU-R P.838-3 model were employed using four-year rainfall data obtained from Port Harcourt, Nigeria. The results revealed that the peak activities of rainfall rates were recorded at lower integration times, and the total rain-induced attenuation increases with increasing operating frequencies, which is greater for horizontally polarized waves compared to vertically polarized waves.


Introduction

All forms of wireless communication make use of electromagnetic wave, which is either propagated vertically, horizontally or as a combination of both. Wireless communication provides huge opportunity to get possible access to the world at any time in any place without being physically present (Maniewicz, 2019). The modern-day digital information and wireless communication system are reliant on radio waves for its transmission (Jianping et al., 2008). Radio wave ranges from the Very Low Frequency (VLF) to the Extremely High Frequency (EHF) (IEEE, 2002).
Transmission of wireless information at the lower frequency bands is however associated with long wavelength but very little bandwidth. On the other hand,


Keywords:

Rain attenuation, Rainfall rate, Integration time, Operating frequency, Conversion factor

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