ESTIMATION-DECODING ON LDPC-BASED 2D-BARCODES

W. Proß, M. Otesteanu, F. Quint

Abstract

In this paper we propose an extension of the Estimation-Decoding algorithm for the decoding of our Data Matrix Code (DMC), which is based on Low-Density-Parity-Check (LDPC) codes and is designed for use in industrial environment. To include possible damages in the channel-model, a Markov-modulated Gaussian channel (MMGC) was chosen to represent everything in between the embossing of a LDPC-based DMC and the camera-based acquisition. The MMGC is based on a Hidden-Markov-Model (HMM) that turns into a two-dimensional model when used in the context of DMCs. The proposed ED2D-algorithm (Estimation-Decoding in two dimensions) is implemented to operate on a 2D-LDPC-Markov factor graph that comprises of a LDPC code’s Tanner-graph and a 2D-HMM. For a subsequent comparison between different barcodes in industrial environment, a simulation of typical damages has been implemented. Tests showed a superior decoding behavior of our LDPC-based DMC decoded with the ED2D-decoder over the standard Reed-Solomon-based DMC.

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Paper Citation


in Harvard Style

Proß W., Otesteanu M. and Quint F. (2011). ESTIMATION-DECODING ON LDPC-BASED 2D-BARCODES . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2011) ISBN 978-989-8425-72-0, pages 34-39. DOI: 10.5220/0003457400340039


in Bibtex Style

@conference{sigmap11,
author={W. Proß and M. Otesteanu and F. Quint},
title={ESTIMATION-DECODING ON LDPC-BASED 2D-BARCODES},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2011)},
year={2011},
pages={34-39},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003457400340039},
isbn={978-989-8425-72-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2011)
TI - ESTIMATION-DECODING ON LDPC-BASED 2D-BARCODES
SN - 978-989-8425-72-0
AU - Proß W.
AU - Otesteanu M.
AU - Quint F.
PY - 2011
SP - 34
EP - 39
DO - 10.5220/0003457400340039