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Systematic feed-forward convolutional encoders are better than other encoders with an M-algorithm decoder

Osthoff, Harro; Anderson, John B LU ; Johannesson, Rolf LU and Lin, Chin-foo (1998) In IEEE Transactions on Information Theory 44. p.831-838
Abstract
Consider nonbacktracking convolutional decoders that keep a fixed number of trellis survivors. It is shown that the error performance of these depends on the early part of the distance profile and on the number of survivors kept, and not on the free distance or the details of the code generators. Particularly, the encoder may be feedforward systematic without loss. Furthermore, this kind of encoder solves the correct path loss problem in reduced-search decoders. Other kinds do not. Therefore, with almost any other decoding method than the Viterbi algorithm, systematic feed-forward encoders should be used. The conclusions in this correspondence run counter to much accepted wisdom about convolutional codes
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Information Theory
volume
44
pages
831 - 838
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • Scopus:0032025839
ISSN
0018-9448
DOI
10.1109/18.661531
language
English
LU publication?
yes
id
825b27ec-f9dd-4889-a4d8-4d515ff77991 (old id 1056643)
date added to LUP
2008-04-16 15:24:37
date last changed
2016-10-13 04:32:35
@misc{825b27ec-f9dd-4889-a4d8-4d515ff77991,
  abstract     = {Consider nonbacktracking convolutional decoders that keep a fixed number of trellis survivors. It is shown that the error performance of these depends on the early part of the distance profile and on the number of survivors kept, and not on the free distance or the details of the code generators. Particularly, the encoder may be feedforward systematic without loss. Furthermore, this kind of encoder solves the correct path loss problem in reduced-search decoders. Other kinds do not. Therefore, with almost any other decoding method than the Viterbi algorithm, systematic feed-forward encoders should be used. The conclusions in this correspondence run counter to much accepted wisdom about convolutional codes},
  author       = {Osthoff, Harro and Anderson, John B and Johannesson, Rolf and Lin, Chin-foo},
  issn         = {0018-9448},
  language     = {eng},
  pages        = {831--838},
  publisher    = {ARRAY(0xb4aaea0)},
  series       = {IEEE Transactions on Information Theory},
  title        = {Systematic feed-forward convolutional encoders are better than other encoders with an M-algorithm decoder},
  url          = {http://dx.doi.org/10.1109/18.661531},
  volume       = {44},
  year         = {1998},
}