Underwater acoustic channel is a challenging medium for communication due to the
presence of significant multipath, high noise, frequency‐dependent propagation loss, and …

In underwater acoustic (UWA) communications, Doppler estimation is one of the major
stages in a receiver. Two Doppler estimation methods are often used: the cross-ambiguity …

Underwater acoustic (UWA) communication is the only option for underwater long-distance
wireless communication. However, its data rate is very low, in tens of kbps, and the time …

This paper presents an adaptive approach to address the two main problems associated
with the time varying Doppler shift, the first being the acceleration effects on the cyclic-prefix …

A new scheme for Doppler estimation and data detection for OFDM underwater acoustic
communications is derived in this paper. We design the OFDM symbol as a concatenation of …

In underwater acoustic (UWA) communications, an emerging research area is the high data
rate and robust transmission using multi-carrier modulation, such as orthogonal frequency …

Doppler estimation is a research problem in underwater acoustic (UWA) communications,
because the Doppler effect is a direct consequence of the rapid variations that exist in UWA …

The performance of orthogonal frequency division multiplexing (OFDM) is gravely affected
by the Doppler induced symbol dilation. Thus, it is important to compensate for this effect …

Proposed, are computationally light weight Kalman filter (KF) implementations of Doppler
tracking and channel estimation for underwater acoustic (UWA) channels. This targets …

In recent years, orthogonal frequency division multiplexing (OFDM) has gained considerable
attention in the development of underwater communication (UWC) systems for civilian and …