… orthogonal frequency division multiplexing acoustic communication system. The adaptive …
OFDM underwater acoustic communication system, we propose a DRL adaptive modulation …

… OFDM is in essence an application of spatial modulation, which is a kind of multi-inputmulti-output
technique [11]-[13], to OFDM … the potential to outperform plain OFDM in terms of both …

… Thus, we can avoid the using the IQ modulator. The diagram of the implemented … for
underwater acoustic communications, which utilizes the guard interval (GI) embedded in an OFDM …

… General principles about OFDM design The OFDM modulation we developed for shallow
water communication purposes has been adapted kom a waveform previously developed for …

… Abstract—Underwater acoustic communication is essential in applications like remote control
… OFDM modulated dynamic code cooperation scheme for underwater relay networks where …

… communication. Orthogonal Frequency Division Multiplexing (OFDM) (or more generally
multi-carrier modulation, … for communications through multi-path communications channels. The …

… ,2/1s T f=∆ which is only half of the subcarrier spacing of an IFFT modulated OFDM signal
leading to further compaction. Few fast DCT algorithms proposed in [19] and [20] can provide …

… multicarrier modulation … OFDM modems for underwater acoustic communications. First,
we implement both single-input single-output (SISO) and multi-input multi-output (MIMO) OFDM …

… The diagram of the UA OFDM system is shown in Fig. 2, the information bits b(t) are mapped
into symbols by Turbo coding and modulation constellation. The insertion of the pilot is used …

… (UWA) communications. Compared to existing deep neural network (DNN) OFDM receivers
composed of fully connected (FC) layers, our model tailors complex UWA communications …