Abstract
Millimeter wave (mmWave) communication is a key technology for fifth generation (5G) and beyond communication networks. However, the communication quality of the radio link can be largely affected by rain attenuation, which should be carefully taken into consideration when calculating the link budget. In this paper, we present results of weather data collected with a PWS100 disdrometer and mmWave channel measurements at 25.84 GHz (K band) and 77.52 GHz (E band) using a custom-designed channel sounder. The rain statistics, including rain intensity, rain events, and rain drop size distribution (DSD) are investigated for one year. The rain attenuation is predicted using the DSD model with Mie scattering and from the model in ITU-R P.838-3. The distance factor in ITU-R P.530-17 is found to be inappropriate for a short-range link. The wet antenna effect is investigated and additional protection of the antenna radomes is demonstrated to reduce the wet antenna effect on the measured attenuation.
Highlights
Millimeter wave communication is a key technology for fifth generation (5G) and beyond communication networks [1], [2]
WORK A custom-designed channel sounder with dual-polarized transmitters and receivers have been set up over a short link typical of a building to building scenario to study the impact of rain on the 25.84 GHz and 77.52 GHz bands identified for future 5G and beyond communication systems
The ITU-R P.838-3 rain attenuation model and the drop size distribution (DSD) model are compared, and the maximum recommended distance factor in ITU-R P.530-17 is shown to be inappropriate for a short-range link
Summary
Millimeter wave (mmWave) communication is a key technology for fifth generation (5G) and beyond communication networks [1], [2]. In [3], rain attenuation over a four year period was measured at Ka-band (19.7 and 20.2 GHz) based on the ONERA satellite link. In [6], rain attenuation was measured at Ka-band and Q-band (19.7 and 39.4 GHz) based on Eutelsat KA-SAT and Alphasat satellite, respectively Both time diversity and orbital diversity were studied. In [7], rain attenuation was measured at 20.2 GHz based on Amazonas 3 satellite and compared with ITU-R P.618-13 model. J. Huang et al.: Rain Statistics Investigation and Rain Attenuation Modeling for mmWave Short-Range Fixed Links attenuation was measured at 38 GHz for a 1.85 km link. In [16], the results for a 60 GHz terrestrial link with distance of 150 m and K-band (12-18 and 28 GHz) satellite links were compared.
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