Direct Equalization of Time-selective Fading Channels Using Redundant Filterbank Precoders

Orthogonal Frequency Division Multiplexing (OFDM) is known to exhibit robustness to multipath transmissions over time-invariant frequency selective channels, and this is among the main reasons it has been adopted as the standard modulation technique for both digital audio and video broadcasting in Europe. However by duality, OFDM is particularly sensitive to time-varying channels. In this paper we propose a novel approach for blind identi cation and direct equalization of multiplicative channels a ecting OFDM transmission systems. Simulation results are provided to validate the theory.