As a sound transmitting device based on the nonlinear acoustic theory, parametric acoustic
array (PAA) is able to generate high directivity and low frequency broadband signals with a …

Nonlinear acoustics is a critical area of study with practical applications in fields such as
underwater communications, medical imaging, non-destructive testing, and sonar. This …

Accurate channel information is usually required in under-ice acoustic (UIA) communication,
which exhibits a sparse characteristic. A type of norm-constrained least mean square (LMS) …

Although multiple-input multiple-output (MIMO) underwater acoustic (UWA) communication
has been intensively investigated in the past years, existing works mainly focus on open …

Underwater communication system that uses Morse code to transmit text messages over
long distances is proposed and discussed in this article. This system will consist of a …