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Mitigating error propagation effects in a decision feedback equalizer

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4 Author(s)
Reuter, M. ; SSC, San Diego, CA, USA ; Allen, J.C. ; Zeidler, J.R. ; North, R.C.

We present an approximate analysis approach to the computation of the probability of error and mean burst error length for a decision feedback equalizer (DFE) that takes into account feedback of decision errors. The method uses a reduced-state Markov model of the feedback process and is applicable to linear modulation formats. We use this technique to analyze a DFE design that mitigates the effects of feedback error by incorporating a soft decision device into the feedback path and a norm constraint on the feedback filter weights. We apply the DFE design and analysis approach to a dispersive multipath propagation environment

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Communications, IEEE Transactions on  (Volume:49 ,  Issue: 11 )