RLS DIRECT EQUALIZER ESTIMATION WITH ASSISTANCE OF PILOTS FOR TRANSMISSIONS OVER TIME-VARYING CHANNELS (MonAmOR12)

Author(s) : Zijian Tang (Delft University of Technology, Netherlands) Geert Leus (Delft University of Technology, Netherlands)

Abstract : In this paper, we construct a Decision Feedback Equalizer (DFE) suitable for highly time-varying propagation channels. The DFE is assumed to have a so-called Finite Impulse Response Basis Expansion Model (FIR-BEM) structure. The coefficients of this parametric equalizer are computed in a semi-blind iterative fashion, following a Recursive Least Squares (RLS) approach. Simulation results confirm that the proposed algorithm performs well and can tolerate channel modeling errors.

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