Channels leading to rapid error recovery for decision feedbackequalizers
Kennedy, R.A.
Anderson, B.D.O.
Bitmead, R.R.
Dept. of Syst. Eng., Australian Nat. Univ., Canberra, ACT;
This paper appears in: Communications, IEEE Transactions on
Publication Date: Nov 1989
Volume: 37,
Issue: 11
On page(s): 1126-1135
ISSN: 0090-6778
References Cited: 12
CODEN: IECMBT
INSPEC Accession Number: 3606620
Digital Object Identifier: 10.1109/26.46506
Current Version Published: 2002-08-06
Abstract
The authors define the DFE (decision feedback equalizer) system of
interest and their finite-error-recovery-time problem. They present
their basic result, which establishes that whenever the channel
satisfies a simple frequency-domain constraint, the error recovery time
of an ideal DFE is always finite. They also include four applications of
this theorem, including analysis of a real channel. Convergence rates
and explicit bounds, given an exponential overbound on the channel
impulse response, are presented. Results of greater practical interest,
where the authors relax most of the major idealized assumptions, are
also given. The authors present the result for M-ary data and
relate the error recovery time bound back to the binary case. A formula
for the error probability, given a high signal-to-noise-ratio channel,
is provided
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