The several prominent rain attenuation prediction methods have been studied in [21-29] where the performances of ITU-R method required for the design of earth-space telecommunication systems have been compared.
The recommendation of the ITU-R P.838-3 [31] establishes the procedure of specific attenuation from the rain intensity.
The constants appear in recommendation tables of ITU-R P 838-3 [31] and also can be obtained by interpolation considering a logarithmic scale for k and linear scale for [alpha].
Secondly, the mean annual rain height is determined through the recommendation of ITU-R P.
Chinta: As part of
ITU-R's 5D work plan, the working party has started seeking the technical performance requirements expected of a technology to satisfy IMT- 2020, as well as documenting evaluation criteria and evaluation methods for IMT-2020 technology.
"The ITU-R's efforts in the past on IMT spectrum and technology have directly enabled the global success of mobile broadband," said Bienaime.
Based on these new traffic forecasts, further actions in the ITU-R framework are now needed to meet traffic demand for the next 10 years," he concluded.
The
ITU-R Radiocommunication Assembly, which meets in October 2015, is expected to formally adopt the term "IMT-2020".