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Title An Accurate Density Evolution Analysis for a Finite - State Markov Channel (in Japanese)
Authors Naoto KOBAYASHI 、Toshiyasu MATSUSHIMA 、Shigeichi HIRASAWA
Released Year 2008
Format International Conference
Category Channel coding
Jounal Name Proceedings of Pre-ICM International Convention on Mathematical Sciences
Jounal Page pp. 114-115, Delhi, India
Published Year 2008
Published Month 12
Abstract
(English)
In this paper, we consider density evolution analyses of low-density parity-check (LDPC) codes for a finite-state markov channel (FSMC).
Since operations in the subgraph corresponding to the estimation process do not satisfy symmetry conditions,
all densities involved in each value of the channel state should be kept track.
To avoid the complexity to compute plural pdfs,
only one pdf involved in the channel state is computed exploiting marginalization operations.
We suppose that this approach is not accurate enough to track the estimation process of the joint estimation-decoding.
In this paper, we present a procedure of the density evolution analysis of LDPC codes for an FSMC of which
all densities involved in each value of the channel state are kept track.
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(English)
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