Providing reliable broadband wireless communications in high mobility environments, such
as high-speed railway systems, remains one of the main challenges faced by the …

In this paper, we deal with channel estimation for orthogonal frequency-division multiplexing
(OFDM) systems. The channels are assumed to be time-varying (TV) and approximated by a …

A multiband OFDM transmitter and receiver are presented for underwater communications at
low SNR. Compared with a single-band OFDM scheme, the multiband approach leads to a …

Recently, several approaches have been proposed for the equalization of orthogonal
frequency-division multiplexing (OFDM) signals in challenging high-mobility scenarios …

In many modern wireless communication systems, the assumption of a locally time-invariant
(block-fading) channel breaks down due to increased user mobility, data rates, and carrier …

In this paper, a novel pilot-aided algorithm is developed for multiple-input-multiple-output
(MIMO) orthogonal frequency-division-multiplexing (OFDM) systems operating in a fast time …

We propose a novel equalization method for doubly selective wireless channels, whose taps
are represented by an arbitrary Basis Expansion Model (BEM). We view such a channel in …

Orthogonal frequency-division multiplexing (OFDM) is widely adopted for providing reliable
and high-data-rate communication in high-speed train (HST) systems. However, with …

We propose a novel pilot-aided algorithm for estimation of rapidly varying wireless channels
in OFDM systems. Our approach is specifically designed for channels varying on the scale of …

In this paper, we propose adaptive channel estimation for orthogonal frequency division
multiplexing (OFDM) in fast time-varying (TV) channels. A basis expansion model (BEM) …