Development of a Physical Layer for Adaptive Underwater Acoustic Communications
conference paper
For underwater acoustic modems to operate in a
time-varying environment, in-mission adaptation is desirable. A
physical layer has been designed that supports mechanisms for
ad-hoc configuration changes based on (in-situ and indirectly
obtained) channel and noise conditions. Coded preambles are
used to instruct the receiver of a configuration change. To support
indirect link feedback, a fixed bit-allocation scheme is proposed
that provides a field for link quality information. Performance
of the coded preambles versus payload delivery are studied in
replay simulation. Eventually, thresholds for rate switching based
on indirect link feedback of the output SNR are presented.
time-varying environment, in-mission adaptation is desirable. A
physical layer has been designed that supports mechanisms for
ad-hoc configuration changes based on (in-situ and indirectly
obtained) channel and noise conditions. Coded preambles are
used to instruct the receiver of a configuration change. To support
indirect link feedback, a fixed bit-allocation scheme is proposed
that provides a field for link quality information. Performance
of the coded preambles versus payload delivery are studied in
replay simulation. Eventually, thresholds for rate switching based
on indirect link feedback of the output SNR are presented.
TNO Identifier
977865
Publisher
IEEE
Source title
2022 Sixth Underwater Communications and Networking Conference (UComms)
Files
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