Precoded Faster-Than-Nyquist Signaling for Doubly Selective Underwater Acoustic Communication Channel

In this letter, we propose faster-than-Nyquist (FTN) signaling transmission that is robust for an underwater acoustic (UWA) doubly selective channel. Owning to the explicit benefits of a reduced symbol interval specific FTN signaling, detrimental effects time-selective channel are significantly relaxed. Furthermore, upon introducing single-carrier transmit precoding and equalization, proposed achieves high detection performance. Our simulation results demonstrate outperforms conventional Nyquist-based benchmark scheme in