Most underwater wireless networks use acoustic
waves as the transmission medium nowadays,
but the chances of getting much more out of
acoustic modems are quite remote. Optical links
are impractical for many underwater applications.
Given modern operational requirements
and digital communications technology, the time
is now ripe for re-evaluating the role of electromagnetic
signals in underwater environments.
The research presented in this article is motivated
by the limitations of current and established
wireless underwater techniques, as well as the
potential that electromagnetic waves can offer to
underwater applications. A case study is presented
that uses electromagnetic technology in a
small-scale underwater wireless sensor network.
The results demonstrate the likely effectiveness
of the designated network
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