In this paper, we explore design aspects of adaptive modulation based on orthogonal
frequency-division multiplexing (OFDM) for underwater acoustic (UWA) communications, and …

… In this article, we introduce IM-OFDM for UWA communications and propose a hybrid IM-…
introduce IM-OFDM to UWA communications as well as propose a hybrid IM-OFDM system with …

… modulation is used in the form of orthogonal frequency division multiplexing (OFDM) and
adaptive modulation and … for adaptive modulation in underwater acoustic communications," …

… OFDM is considered as a low-complexity alternative to single-carrier modulation for the next
generation of acoustic … of multicarrier modulation is introduced in the UWA communication, …

… Chapter 16 presents two cooperative relay protocolsin OFDM modulated underwater
acoustic networks. Chapter 17 considersthe useof physical layer network coding. …

… Adaptive modulation and coding (AMC) is appealing for underwater acoustic communications
to improve the system efficiency by matching transmission parameters to channel …

… modulation such as DCT-OFDM or DHT-OFDM, the subcarrier duration decreases to be half
of the in DFT-OFDM… real signalbased modulation order (Mr) and the DFT-OFDM modulation …

… In this study, multi-user (MU) underwater acoustic communication is investigated using …
division multiplexing (OFDM)-based orthogonal time frequency space modulation (OTFS) systems…

… OFDM to medium-range underwater acoustic (UWA) channel, can be UWA communication,
we design an OFDM … uses a special form of pseudo-random phase modulated OFDM signal …

… four packets with different modulation formats, as shown … modulation contains 36 OFDM
blocks, the packet of 8-QAM contains 24 OFDM blocks, the packet of 16QAM contains 18 OFDM …