Parallel trellis Viterbi algorithm for sparse channels
McGinty, N.C.
Kennedy, R.A.
Hocher, P.
Div. of Commun., Defence Sci. & Technol. Organ., Salisbury, SA;
This paper appears in: Communications Letters, IEEE
Publication Date: May 1998
Volume: 2,
Issue: 5
On page(s): 143-145
ISSN: 1089-7798
References Cited: 4
CODEN: ICLEF6
INSPEC Accession Number: 5921898
Digital Object Identifier: 10.1109/4234.673661
Current Version Published: 2002-08-06
Abstract
The Viterbi algorithm (VA), which normally operates using a single
trellis, can be optimally reformulated into a set of independent
trellises for a special class of sparse intersymbol interference (ISI)
channels. These independent trellises operate in parallel and have less
overall complexity than a single trellis. This trellis decomposition can
be applied to a more general class of sparse channels approximately
resulting in a suboptimal reduced complexity equalizer
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