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arXiv 2101.11490cs.ITmath.IT
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通过辅助通道的非渐近逆界

Non-Asymptotic Converse Bounds Via Auxiliary Channels

Ioannis Papoutsidakis, Robert J. Piechocki, Angela Doufexi

摘要:

本文提出了一种新的推导离散弱对称无记忆信道非渐近可达速率逆界的方法。它是基于有限的块长度统计的通道,其中与使用一个辅助通道的逆界产生。该方法是通用的,并首次提出了一个任意的弱对称信道。然后,将主要结果专门用于$q$ -进制擦除信道(QEC)、二进制对称信道(BSC)和带停止反馈的QEC。数值计算结果表明,相同或可比的界限,以国家的最先进的QEC和BSC的情况下,和更严格的限制与停止反馈的QEC。

英文摘要:

This paper presents a new derivation method of converse bounds on the non-asymptotic achievable rate of discrete weakly symmetric memoryless channels. It is based on the finite blocklength statistics of the channel, where with the use of an auxiliary channel the converse bound is produced. This method is general and initially is presented for an arbitrary weakly symmetric channel. Afterwards, the main result is specialized for the $q$-ary erasure channel (QEC), binary symmetric channel (BSC), and QEC with stop feedback. Numerical evaluations show identical or comparable bounds to the state-of-the-art in the cases of QEC and BSC, and a tighter bound for the QEC with stop feedback.

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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