Self-recovering transceivers for block transmissions: filterbank precoders and decision-feedback equalizers

Abstract

Transmitter induced redundancy using FIR filterbanks can be used to equalize FIR channels irrespective of channel zeros and facilitate blind channel estimation. At the receiver end, linear or non-linear (DFE) FIR filterbanks can be applied to recover the transmitted data. Closed form expressions are derived for the FIR linear or DFE filterbank receivers. By applying blind channel estimation methods, the resulting DFE-framework becomes self-recovering. Extensive simulations illustrate the merits of our designs.