… parts: underwater acoustic communication, underwater optical … modulated carrier signal is
called demodulation. In addition to the basic carrier modulation techniques, other modulation …

… channel to design a high-performance underwater acoustic modem. We utilized
modulation/demodulation techniques suitable for high-speed communication to achieve a …

… While underwater acoustic communication over shorter ranges is an established technique,
this … That is, in contrast to the direct approach, no demodulation is made. Fig. 6 illustrates the …

This article presents orthogonal frequency division multiplexing (OFDM) that is based on
discrete Hartley transform (DHT) as a modulation transform for underwater acoustic (UWA) …

… demodulator for low data rate, asynchronous frame, and narrow bandwidth underwater acoustic
communication. … Mobility results into the Doppler effect, which, for a demodulator, makes …

… Moreover, detailed procedures for modulation and demodulation are also presented. In …
underwater vehicles (AUVs) [6], etc. As we know, underwater acoustic communication (UWAC) …

… Focusing on the potential value of narrow directivity of parametric sonar in underwater
acoustic communication, a broadband recursive filtering modulation method is proposed in this …

… Underwater acoustic (UA) wireless communication plays an important role in exploring the
… A successful modulation/demodulation process of the forward channel entirely depends on …

… called the demodulation. This two-step process of modulationdemodulation is necessary
when … The following Subsections help us to understand the modulation techniques used in this …

… modulations in underwater communications, while in harsher environments JANUS can be
used as a fall-back modulation. … receiver is able to correctly demodulate the without any error (…