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Fade margin
In
telecommunication
, the term
fade
margin
has the following meanings:
A design
allowance
that provides for
sufficient
system
gain
or
sensitivity
to
accommodate
expected
fading
, for the purpose of ensuring that the
required
quality of service
is maintained.
The
amount
by which a
received signal level
may be
reduced
without
causing
system
performance
to
fall
below a specified
threshold value
. It is mainly used to
describe
a
communication system
such as
satellite
, for example a system like
globalstar
operates at
25-35
dB
Fade
margin.