This paper presents a new derivation method of converse bounds on the non-asymptotic achievable rate of memoryless discrete 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 methodology is general and initially presented for an arbitrary channel. Afterwards, the main result is specialized for the $q$-ary erasure (QEC), binary symmetric (BSC), and Z channels. Numerical evaluations show improvement in comparison to meta-converse and sphere-packing bounds in the cases of QEC and BSC.

翻译：本文介绍了一种关于无内存离散通道非简易可实现速率的反向界限的新推导方法,其依据是该频道的有限轮廓统计,利用该频道的辅助频道生成反向连接,这种方法是一般性的,最初是为任意频道提供的,随后主要结果专门用于$-QEC(QEC)、二元对称(BSC)和Z频道,数字评估表明,与QEC和BSC的元反和球包装界限相比,数字评估有所改善。