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9.283  Articles
1 of 929 pages  |  10  records  |  more records»
This work studies the attenuation by rain that occurs in the Caribbean region, specifically, in high frequency bands, considering that modern communication systems make greater use of satellite bands. In this sense, the methodology of the recommendation I... see more

Attenuation due to rainfall is one of the most fundamental constraints on the performance of satellite links above 10 GHz. This work presents the results of rain attenuation measurement using radar data collected from MMD and DIDM Malaysia. The results we... see more

Mobile communications are part of our everyday life. The non-ideal environment which is filled with many attenuation factors affects the electromagnetic waves, which radio communication depends. This study considers the spectral range of 1 and 3GHz. At th... see more

In millimeter-wave wireless cellular systems like Local Multipoint Distribution Services (LMDS) rain attenuation is an essential factor of performance degradation. It can cause signal outages and poor quality of signal reception. To mitigate the problem, ... see more

Commercial microwave links have a great potential to be used as sensors for rain. However, the use of commercial microwave links to monitor the rain depends heavily on the availability of the links’ attenuation measurements. The cellular operators w... see more

IntisariMicro Rain Radar (MRR) merupakan suatu instrumen pengamatan hujan, yang beroperasi secara vertikal. Sementara itu, radar cuaca WR-2100 biasa digunakan untuk membuat suatu profil yang berupa cakupan area.  Akan tetapi, dengan pengolahan lebih ... see more

Several tropospheric radio-attenuation parameters for the 0.4-4.0 GHz window are modeled in the present work. Both the Hopfield and Linear models were used to obtain vertical profiles of Venezuelan tropospheric refractivity. The extinction coefficient spe... see more

This paper deals with the prediction method using hidden Markov model (HMM) for rain rate and rain propagation attenuation for K-band satellite communication link at tropical area. As is well known, the K-band frequency is susceptible of being affected by... see more

Cloud cover statistics, cloud base and top height, cloud temperature, frequency of precipitation, freezing height, total cloud liquid water content (TCLWC) and cloud attenuation data have been obtained for the six major climatic zones of Africa. The prese... see more

1 of 929 pages  |  10  records  |  more records»