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Design of irregular LDPC codes for nonparametric channels

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3 Author(s)
Pross, W. ; Fac. of Electron. & Telecommun., Politeh. Univ. of Timisoara, Timisoara, Romania ; Otesteanu, M. ; Quint, F.

In this paper we propose a design-method for irregular LDPC codes in the context of channels, that can not sufficiently be described with the known parametric channel-models. We introduce a very flexible histogram-based channel-model. Furthermore a design-method based on the downhill simplex optimization is explained for the design of irregular LDPC codes in the context of histogram-based channel-models. We also propose an extension for soft-decision based LDPC decoders and explain the simulation of LDPC codes considering histogram-based channels-models. Following results based on a 2-state Markov-model prove the effectiveness of our design-method, the description of the channel and the decoding based on histograms.

Published in:

Electronics and Telecommunications (ISETC), 2012 10th International Symposium on

Date of Conference:

15-16 Nov. 2012