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Channel (communications)
In
telecommunications
and
computer networking
, a communication channel or
channel
, refers either to a physical
transmission medium
such as a wire, or to a
logical connection
over a
multiplexed
medium such as a radio channel. A channel is used to
convey
an
information
signal, for example a digital
bit stream
, from one or several
senders
(or transmitters) to one or several
receivers
. A channel has a certain capacity for transmitting information, often measured by its
bandwidth
in
Hz
or its
data rate
in
bits per second
.
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