RT Conference Proceedings T1 Transmisión OFDM por canales acústicos subacuáticos. A1 Gonzalez-Monge, María del Castillo A1 Cobacho Ruiz, Pablo A1 Fernández-Plazaola, Unai A1 Martos-Naya, Eduardo K1 Multiplexación K1 Telecomunicaciones K1 Transductores ultrasónicos AB This paper presents a multicarrier modulation system with low complexity designed for wide-band underwater acoustic communications within the ultrasonic range (from 32 kHz to 128 kHz). Underwater Acoustic Communications (UAC) systems are recognized as one of the most challenging communication media in use today due to their temporal and frequency selectivity characteristics. This paper addresses the development of an OFDM (Orthogonal Frequency Division Multiplexing) system employing QPSK (Quadrature Phase Shift Keying) modulation. Paper describes the performance comparison between two methods of channel response estimation using pilots: time interpolation versus frequency interpolation. The system’s performance is evaluated using impulse responses obtained from shallow water measurements conducted in the Mediterranean Sea. YR 2024 FD 2024-09-05 LK https://hdl.handle.net/10630/38151 UL https://hdl.handle.net/10630/38151 LA spa DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 19 ene 2026