According to Fisch (2002), the Amazon Region has an average rainfall of
approximately 2300 mm, although it has regions where the annual total reaches 3500
mm. In their work, Figueroa and Nobre (1990) used 226 rainfall stations to identify the
spatial and temporal distribution of rainfall in the Amazon region. This survey identified
in detail the period of the year where rainfall occurs most frequently in the region, while
the period of highest rainfall was identified between November and March.
The city of Manaus, is located in the central part of the Amazon, Region that
have high precipitation rates over 600 mm. This work was developed with the objective
of analyzing the effects of these atmospheric precipitations on the signal propagation
of the LTE 4G technology in the city, to identify areas of low coverage, since these
failures are due to rapid rains, heavy rains or long term rainfall. Natural phenomena
that frequently occur in the rainy season of the Amazon Region.
Signal Prediction software installed on a notebook was used to collect this data
received by the network access equipment, a modem enabled for web access and
other services, and a Frequency Scanner was also used to collect the Gross Signal,
the electromagnetic wave itself emitted by the Base Radio Stations (ERB) installed by
the city of Manaus in several strategic points.
Subsequently, a comparison was made of the measurements made in the
environment with enough trees and few buildings with opposite climatic conditions,
intense rains and intense sun. The chosen location of the first comparative analysis is
located in the neighborhood of Santa Etelvina, chosen for analysis of aerial images of
the city of Manaus with the Free Software Google EARTH. The second location chosen
for the comparative analysis was the neighborhood of Cachoerinha, where there are
quite old buildings and not much wooded and following the same criteria, opposite
climatic conditions, intense rains and intense sun. With the comparative, we can verify
attenuation that occurred in the rainy season and improve the coverage in those
periods that frequently occur in the city.
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