Vertical underwater acoustic (UWA) communications play a crucial role in deep-sea
applications. A vertical UWA channel generally features a moderate multipath but with time …

In this paper, the sparse direct adaptive equalization based on the recently developed
proportionate recursive least squares (PRLS) adaptive filtering algorithm is investigated for …

The sparse direct adaptive equalizer (DAE) has recently attracted much attention in
underwater acoustic (UWA) communications for its improved performance compared with …

For single-carrier underwater acoustic (UWA) communications, a time-domain channel
estimation based equalizer (CEE) is usually overlooked in favor of a direct adaptive …

In this paper, a low-complexity recursive least squares (RLS) type sparse direct adaptive
equalizer (DAE) is proposed for multiple-input multiple-output (MIMO) underwater acoustic …

Sparse recursive least squares (RLS) algorithms designed by introducing a sparse penalty
(regularization) into the standard RLS cost function, have been proposed in the literature …

When transmitting data in a hydroacoustic channel under difficult propagation conditions,
one of the problems is intersymbol interference (ISI) caused mainly by the effect of multipath …

Low-frequency and shallow-water acoustic channels show obvious cluster sparsity based
on the inter-and intra-modal dispersion characteristics. Thus, adaptive algorithms suitable …

Faster-than-Nyquist (FTN) signaling is an attractive technology to improve the spectral
efficiency. In this paper, an efficient FTN transceiver is proposed for underwater acoustic …