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Implementation Aspects of LDPC Convolutional Codes

Pusane, Ali Emre; Jimenez Feltström, Alberto; Sridharan, Arvind; Lentmaier, Michael LU ; Zigangirov, Kamil LU and Costello Jr., Daniel J. (2008) In IEEE Transactions on Communications 56(7). p.1060-1069
Abstract
Potentially large storage requirements and long initial decoding delays are two practical issues related to the decoding of low-density parity-check (LDPC) convolutional codes using a continuous pipeline decoder architecture. In this paper, we propose several reduced complexity decoding strategies to lessen the storage requirements and the initial decoding delay without significant loss in performance. We also provide bit error rate comparisons of LDPC block and LDPC convolutional codes under equal processor (hardware) complexity and equal decoding delay assumptions. A partial syndrome encoder realization for LDPC convolutional codes is also proposed and analyzed. We construct terminated LDPC convolutional codes that are suitable for block... (More)
Potentially large storage requirements and long initial decoding delays are two practical issues related to the decoding of low-density parity-check (LDPC) convolutional codes using a continuous pipeline decoder architecture. In this paper, we propose several reduced complexity decoding strategies to lessen the storage requirements and the initial decoding delay without significant loss in performance. We also provide bit error rate comparisons of LDPC block and LDPC convolutional codes under equal processor (hardware) complexity and equal decoding delay assumptions. A partial syndrome encoder realization for LDPC convolutional codes is also proposed and analyzed. We construct terminated LDPC convolutional codes that are suitable for block transmission over a wide range of frame lengths. Simulation results show that, for terminated LDPC convolutional codes of sufficiently large memory, performance can be improved by increasing the density of the syndrome former matrix. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
spatial coupling, LDPC codes, LDPC convolutional codes
in
IEEE Transactions on Communications
volume
56
issue
7
pages
1060 - 1069
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • Scopus:49049086924
ISSN
0090-6778
DOI
10.1109/TCOMM.2008.050519
language
English
LU publication?
yes
id
183ba908-fe23-4b77-b9ed-57c2adbfa9f5 (old id 3731662)
date added to LUP
2013-05-02 09:15:08
date last changed
2016-12-04 04:37:03
@misc{183ba908-fe23-4b77-b9ed-57c2adbfa9f5,
  abstract     = {Potentially large storage requirements and long initial decoding delays are two practical issues related to the decoding of low-density parity-check (LDPC) convolutional codes using a continuous pipeline decoder architecture. In this paper, we propose several reduced complexity decoding strategies to lessen the storage requirements and the initial decoding delay without significant loss in performance. We also provide bit error rate comparisons of LDPC block and LDPC convolutional codes under equal processor (hardware) complexity and equal decoding delay assumptions. A partial syndrome encoder realization for LDPC convolutional codes is also proposed and analyzed. We construct terminated LDPC convolutional codes that are suitable for block transmission over a wide range of frame lengths. Simulation results show that, for terminated LDPC convolutional codes of sufficiently large memory, performance can be improved by increasing the density of the syndrome former matrix.},
  author       = {Pusane, Ali Emre and Jimenez Feltström, Alberto and Sridharan, Arvind and Lentmaier, Michael and Zigangirov, Kamil and Costello Jr., Daniel J.},
  issn         = {0090-6778},
  keyword      = {spatial coupling,LDPC codes,LDPC convolutional codes},
  language     = {eng},
  number       = {7},
  pages        = {1060--1069},
  publisher    = {ARRAY(0xcc20d88)},
  series       = {IEEE Transactions on Communications},
  title        = {Implementation Aspects of LDPC Convolutional Codes},
  url          = {http://dx.doi.org/10.1109/TCOMM.2008.050519},
  volume       = {56},
  year         = {2008},
}