Time-varying FIR decision feedback equalization of doubly-selective channels

I. Barhumi, G. Leus, M. Moonen
GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)  
In this paper we propose a minimum mean-square error (MMSE) decision feedback (DF) time-varying (TV) finite impulse response (FIR) equalizer for doubly-selective (time-and frequency-selective) channels. We use the basis expansion model (BEM) to approximate the doubly-selective channel and to design the TV FIR DFE. This allows us to turn a large design problem into an equivalent small design problem, containing only the BEM coefficients of the doubly-selective channel and the BEM coefficients of
more » ... the TV FIR feedforward and feedback equalization filters. Through computer simulations we show that the performance of the proposed TV FIR DF equalizer approaches the performance of the block DF equalizer, while the equalization as well as the design complexity are much lower.
doi:10.1109/glocom.2003.1258638 dblp:conf/globecom/BarhumiLM03 fatcat:2b422zu5b5c4jppis3uznq7qqm