The energy efficiency of underwater acoustic carrier aggregation in Orthogonal Frequency
Division Multiplexing (OFDM) systems is studied and an energy-efficient aggregation …

摘要针对水声信道多径, 时变, 多普勒等恶劣传输特点对水声语音通信的严重影响,
本文采用多通道时间反转和时频差分OFDM 进行水声语音通信技术方案设计 …

In underwater acoustic communications, orthogonal frequency-division multiplexing (OFDM)
is an alternative to frequency-shift keying (FSK). The key advantage of OFDM scheme is that …

Le milieu sous-marin est doublement dispersif, en temps et en fréquence. L'utilisation
récente de signaux de communication multi-porteuses offre une solution pour lutter contre la …

Cet article présente une méthode d'estimation et de compensation de l'effet Doppler pour
communications ASM (acoustiques sous-marines) en milieu peu profond, pour des signaux …

Underwater acoustic communications constitute a very difficult issue since the transmission
channel is severely doubly dispersive. Indeed, radio waves suffer from strong attenuation so …

In this thesis we perform a research survey of the three available technologies for wireless
underwater communications. We discuss the main features and drawbacks inherent to …

1.1 Objetivos Visando apresentar técnicas de transmissao suficientemente robustas aos
efeitos do canal porém com melhor desempenho, este trabalho analisa a possibilidade de …

This dissertation focuses on cooperative control of multi-agent systems. This topic has been
extensively studied in recent literature due to its large number of applications. This thesis is …

This article presents estimation and compensation methods for OFDM communication signal
using null subcarriers in an underwater acoustic channel for shallow water environment …