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arXiv 1601.07239cs.ITmath.IT
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基于密度演化的误擦除置信传播译码器性能分析

Performance Analysis based on Density Evolution on Fault Erasure Belief Propagation Decoder

Hiroki Mori, Tadashi Wadayama

摘要:

本文对基于密度演化的故障删除BP译码器进行了分析。在故障BP解码器中,由于不可靠的逻辑门和触发器,在BP过程中交换的消息被随机破坏;即,我们假设电路元件具有瞬时故障。我们推导了一组密度演化方程的故障擦除BP过程。我们的密度演化分析揭示了错误删除BP解码器的估计错误概率的渐近行为。与无故障情况相比,可以观察到故障擦除BP解码器的错误概率收敛到正值,并且在对应于故障BP阈值的错误曲线中存在不连续性。它还表明,消息编码技术提供了更高的故障BP阈值比原来的解码器在增加的电路尺寸的成本。

英文摘要:

In this paper, we will present an analysis on the fault erasure BP decoders based on the density evolution. In the fault BP decoder, messages exchanged in a BP process are stochastically corrupted due to unreliable logic gates and flip-flops; i.e., we assume circuit components with transient faults. We derived a set of the density evolution equations for the fault erasure BP processes. Our density evolution analysis reveals the asymptotic behaviors of the estimation error probability of the fault erasure BP decoders. In contrast to the fault free cases, it is observed that the error probabilities of the fault erasure BP decoder converge to positive values, and that there exists a discontinuity in an error curve corresponding to the fault BP threshold. It is also shown that an message encoding technique provides higher fault BP thresholds than those of the original decoders at the cost of increased circuit size.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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