Due to multipath propagation and frequency selective fading, there are many obstacles for
reliable and high data rate underwater acoustic (UWA) communication. OFDM is an …

In this paper, we focus on the need for remote and robust underwater acoustic (UWA)
communication in shallow sea. A set of OFDM underwater acoustic communication …

OFDM has several distinct challenges in the underwater channel environment. The
underwater channel is known to be highly frequency selective with large delay and Doppler …

The major constraint on the performance of orthogonal frequency division multiplexing
(OFDM) based underwater acoustic (UWA) communication is to keep subcarriers …

Underwater acoustic (UWA) communication is still a challenging area of research, as
methods to deal with large intersymbol interference and Doppler spread are needed. We …

Underwater acoustic (UWA) channels are wideband in nature due to the small ratio of the
carrier frequency to the signal bandwidth, which introduces frequency-dependent Doppler …

The main characteristics of underwater acoustic (UWA) channel are Narrow bandwidth,
strong interference caused by multi-path and severe noise. At the same time, these …

The large variability of communication properties of underwater acoustic channels, and
especially the strongly varying instantaneous conditions in shallow waters, is a challenge for …

The orthogonal frequency-division multiplexing (OFDM) technology receives increasing
attention in underwater acoustic (UA) communications. This paper presents a real-time …

In this workshop, we would like to demonstrate a stand-alone OFDM modem prototype that
has been developed at the UWSN lab at the University of Connecticut. The modem …