Robust Decision Feedback Equalizers
IEEE Winter Workshop on Nonlinear Digital
January 17-20, 1993,Murikka, Tampere, Finland.
© 1993 IEEE.
Design equations are presented for robust and realizable
decision feedback equalizers, for IIR channels with coloured noise.
Both the transmission channel and the noise model may have
uncertain spectral properties.
Given a probabilistic measure of model uncertainty,
the mean MSE, averaged over a whole class of possible
models, is minimized.
A second type of robustification, which reduces the
error propagation due to the feedback, is also introduced.
The resulting design equations define a large class
of equalizers, with DFE's and linear equalizers based
on nominal models being special cases.
In the poster, examples are presented which illustrate the
perormance of robustification with respect to channel
errors and decision errors.
More details can be found in a
to be presented at ICASSP'93.
- Related publications:
by Erik Lindskog, May 1995, which includes the paper.
Robustification against time-variations
within a GSM TDMA frame.
Robust filter design
and uncertainty modelling, as described in Automatica 1993.
by Kenth Öhrn May 1996, describing robust filter
design in detail.
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