RT Journal Article
T1 Design of SIMO M-QAM System for Ultrasonic Communications on Shallow Waters
A1 Fernández-Plazaola, Unai
A1 Cañete-Corripio, Francisco Javier
A1 Martos-Naya, Eduardo
A1 Díez-del-Río, Luis
K1 Acústica submarina
K1 Ultrasonidos
K1 Comunicaciones digitales
AB In this work, we present a transmission system that uses single-carrier modulation M-ary symbols quadrature amplitude modulation (M-QAM) for underwater acoustic communications (UAC) in the ultrasonic band. It exploits the diversity that four hydrophones provide at reception in a single-input multiple-output (SIMO) 1×4 configuration and also includes, for each stream, a phase-locked loop (PLL) for synchronization and a turbo-equalization subsystem, with fractionally-spaced equalizer (FSE) and decision feedback equalizer (DFE) filters, adaptive by means of least mean squares (LMS) algorithm, both of which are driven by an low-density parity check (LDPC) decoder decisions. The paper describes the system design and analyze its performances on trials carried out on shallow waters of the Mediterranean sea. Achievable data rates exceeding 200 kb/s between links of transmission distances longer than 200 m are obtained with a satisfactory low bit-error rate (BER).
PB IEEE
YR 2025
FD 2025-07-31
LK https://hdl.handle.net/10630/39944
UL https://hdl.handle.net/10630/39944
LA eng
NO U. Fernández-Plazaola, F. J. Cañete, E. Martos-Naya and L. Díez, "Design of SIMO M-QAM System for Ultrasonic Communications on Shallow Waters," in IEEE Open Journal of the Communications Society, vol. 6, pp. 6323-6335, 2025
NO Fondo Europeos de Desarrollo Regional (FEDER)
NO Ministerio de Ciencia, Innovación y Universidades
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026