The effects of rain fade on millimetre wave channel in tropical climate

Abstract

The main objective of this paper to determine multipath and time-varying channel behaviour of short-terrestrial millimetre-wave point-to-point radio links. In an attempt to invigorate the impact of rain attenuation on mm-wave channel parameters such as the RMS delay spread, path loss received power strength and Rician distribution with a K factor. A brief analysis of rain fading was presented based on the simultaneous measurement of one-minute rain rate and its effects on a short experimental link of 38 GHz. Rain fade average is observed as high as 16 dB for 300 m path at about 125 mm/hr rain intensity. The statistical spatial channel mode (SSCM) simulation software was utilized for an operating frequency of 38 GHz. To generate of power delay profile (PDP). For both omnidirectional and directional antenna. The RMS delay spread and path loss has been estimated using the environmental parameters of Kuala Lumpur city which illustrates the theoretical performances of 5G in Malaysia. It is observed that RMS delay spread, path loss received power strength and K factor effected dramatically by rain fade. (SSCM) simulation software has to be modified to consider rain fade dynamic characteristics to achieve ultra-reliability requirements of outdoor applications in the tropical regions. This study is important for understanding signal propagation phenomena in short distance and enabling the utilization of the millimetre wave band for an urban micro-cellular environment for 5G communication system.

Towards 5G millimeter-wave wireless networks: a comparative study on electro-optical upconversion techniques

“…Figure 2. Schematic diagram of the 6-tupling technique [23] The generated optical signal can be written as [23]   ( 3 )…”

“…MM−W electrical generation and transmission look troublesome process since MM−W signals are susceptible to interference and usually need to maintain line-of-sight transmission to work [2]. Besides, MM−W signals cannot easily move through buildings or obstacles and they can be absorbed by leaves and rain [3]. Hence optical MM−W generation and R−O−F transportation techniques were proposed.…”

Evaluation of Some Path Reduction Factor Models Performance i n Tropical Location

“…Revised Manuscript received on September 14, 2021. Manuscript published on September 30, 2021. distances below 1 km [4], [5], [6]. Several models for estimation of attenuation due to rain have been proposed with emphasis on the effective path length and considered path reduction factors less than 1 as the main part of the rain fade estimation [7], [8].…”

Analysis of rain fade slope for terrestrial links

“…In the last few years, many studies were published on fade slope. However, most of these studies were either conducted in temperate regions [3][4][5][6][7] or dealing with earth to satellite links only [8][9][10][11][12].…”