Journal ArticleDOI
Estimating Rain Attenuation at 72 and 84 GHz From Raindrop Size Distribution Measurements in Albuquerque, NM, USA
E. Hong,Steven A. Lane,D. Murrell,Nicholas Tarasenko,Christos G. Christodoulou,Jordan Keeley +5 more
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TLDR
Based on the DSD, rain specific attenuation is estimated at 72 and 84 GHz with Mie scattering theory and these estimated rain attenuations can be used and validated for rain attenuation analysis of the millimeter wave propagation experiments under similar climate conditions.Abstract:
The raindrop size distribution (DSD) is essential information for understanding rain attenuation effects at millimeter wavelengths. The DSD was measured in Albuquerque, NM, USA, as a part of the W/V-band Terrestrial Link Experiment. An optical disdrometer from Thies Clima was used to measure both size and velocity of rain droplets. The measured DSD consistently showed a unique property of two log-linear distributions regionally separable by drop size under variable rain rates. The functional fit that best represents our measured data with rain rates under 40 mm/h is presented. Based on the DSD, rain specific attenuation is estimated at 72 and 84 GHz with Mie scattering theory. These estimated rain attenuations can be used and validated for rain attenuation analysis of the millimeter wave propagation experiments under similar climate conditions. This letter will guide millimeter wave communication system designers to estimate the rain attenuation based on their own DSD measurements.read more
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Journal ArticleDOI
Rain statistics investigation and rain attenuation modeling for millimeter wave short-range fixed links.
TL;DR: Results of weather data collected with a PWS100 disdrometer and mmWave channel measurements at 25.84 GHz and 77.52 GHz are presented, including rain intensity, rain events, and rain drop size distribution are investigated.
Journal ArticleDOI
Statistical Analysis of Rain at Millimeter Waves in Tropical Area
TL;DR: The measured rain rate and rain attenuation distributions are analysed and benchmarked with several previous measurements and well-known prediction models and showed that the best agreement between the measured rainfall rate in Malaysia and the ITU-R PN is shown.
Journal ArticleDOI
Modification of Distance Factor in Rain Attenuation Prediction for Short-Range Millimeter-Wave Links
TL;DR: In this paper, a modification for the distance factor r in ITU-R P.530-17 has been proposed, and the rain attenuation data measured are utilized to validate and improve the proposed modifications.
Journal ArticleDOI
Millimeter-Wave in the Face of 5G Communication Potential Applications
TL;DR: Recently, the majority of the countries have announced deployment of the fifth-generation (5G) wireless communication in a variety of application areas but in the meanwhile, few academic institutions ...
Journal ArticleDOI
Rain Attenuation Measurements and Analysis at 73 GHz E-Band Link in Tropical Region
Ahmed M. Al-Samman,Marshed Mohamed,Yun Ai,Michael Cheffena,Marwan Hadri Azmi,Tharek Abd Rahman +5 more
TL;DR: The findings from this work showed that Malaysia agrees with the ITU-R rain prediction model of Zone P by 99.99% of time.
References
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Journal ArticleDOI
Terminal Velocity of Raindrops Aloft
G. B. Foote,P. S. Du Toit +1 more
TL;DR: In this article, the inadequacy of previous calculations of terminal velocities at other than sea level conditions is discussed, and empirical formulae are presented which fit the data very closely.
Journal ArticleDOI
Comparison of Raindrop Size Distribution Measurements by Collocated Disdrometers
TL;DR: In this paper, an impact-type Joss-Waldvogel disdrometer, a two-dimensional video dis-rometer and a laser optical OTT Particle Size and Velocity (PARSIVEL) dis-device were used to measure the raindrop size distribution (DSD) over a 6-month period in Huntsville, Alabama.
Journal ArticleDOI
PARSIVEL Snow Observations: A Critical Assessment
TL;DR: In this article, the performance of the laser-optical Particle Size Velocity (PARSIVEL) disdrometer is evaluated to determine the characteristics of falling snow.