Title :
Mitigating error propagation of MMSE-DFE by joint parameter optimization
Author :
Wang, Rujiang ; Delisle, Gilles Y.
Author_Institution :
GIRD Syst. Inc., Cincinnati, OH, USA
Abstract :
A joint optimization of the decision feedback equalizer (DFE) filter weights and an erasure slicer is proposed in this letter. The feedback weights of the DFE are constrained with an accurate mean square error (MSE) model as the criterion. An erasure slicer is adopted to further decrease error propagation. Two consecutive 1-D optimizations are shown as good as that of a single 2-D optimization. Simulation results verify the performance improvements of the proposed scheme.
Keywords :
decision feedback equalisers; least mean squares methods; DFE; MMSE; decision feedback equalizer; error propagation; mean square error model; parameter optimization; AWGN; Decision feedback equalizers; Filters; Gaussian noise; Intersymbol interference; Mean square error methods; Predictive models; Probability; Random variables; Statistics; x Terms¿DFE, ISI, constrained MMSE, error propagation, erasure slicer;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2009.08.070425
