Abstract
The aim of this paper is to present and validate rain attenuation time series synthesizers relying on the Maseng-Bakken principle for terrestrial links in tropical areas. Data obtained in experimental measurements at four links operating at 15 GHz in São Paulo, Brazil, are used to parameterize the synthesizers. Two models are tested with respect to long-term statistics including cumulative distributions of rain attenuation, fade durations and fade slope.
Highlights
Rain attenuation is the main cause of unavailability in fixed terrestrial radio systems operating at frequency of above 10 GHz in tropical and equatorial areas
Two long-term rain attenuation time series synthesizers are presented and tested in this paper, both based on Maseng-Bakken (MB) theory [2]: the first one is the so-called Enhanced MB model (EMB) [3], [4], originally developed for satellite systems in temperate climates, whereas the other one is an modified version, adapted for terrestrial links, referred as the TMB model
Rain attenuation time series were synthesized by EMB and TMB models for each link with the same sampling frequency of the experimental data
Summary
Rain attenuation is the main cause of unavailability in fixed terrestrial radio systems operating at frequency of above 10 GHz in tropical and equatorial areas. Propagation impairments are expected to be quite severe and signal outage and performance standards requirements may be difficult to achieve in these regions. Due to these adverse propagation conditions, Fade Mitigating Techniques (FMT) [1] are often required. The characterization of the dynamic behavior of the propagation channel, as provided by fade durations and fade slope statistics, is required This need can be fulfilled by the introduction of time series of propagation impairments in system simulation. The aim of the study presented in this paper is to test, compare and validate these time series synthesizers for tropical regions, using data measured in four terrestrial radio links operating at 15 GHz [5]
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