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arXiv 2111.04797cs.ITmath.IT
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非匹配译码的球形填充误差指数

A Sphere-Packing Error Exponent for Mismatched Decoding

Ehsan Asadi Kangarshahi, Albert Guillén i Fàbregas

摘要:

我们推导出一个球包装误差指数编码传输离散无记忆信道与固定的解码度量。通过研究辅助信道上码的错误概率,得到了非匹配译码错误概率的一个下界。该界是指数衰减小于本文建立的一个新的上限的失配容量的编码率。对于高于新的上限率,错误概率被证明是有界远离零。新的上限示出,以改善比以前的上限的失配能力。

英文摘要:

We derive a sphere-packing error exponent for coded transmission over discrete memoryless channels with a fixed decoding metric. By studying the error probability of the code over an auxiliary channel, we find a lower bound to the probability of error of mismatched decoding. The bound is shown to decay exponentially for coding rates smaller than a new upper bound to the mismatch capacity which is established in this paper. For rates higher than the new upper bound, the error probability is shown to be bounded away from zero. The new upper bound is shown to improve over previous upper bounds to the mismatch capacity.

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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