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arXiv 2201.11639cs.ITmath.IT
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有限状态反馈信道的容量:数学和优化理论性质

Capacity of Finite State Channels with Feedback: Algorithmic and Optimization Theoretic Properties

Andrea Grigorescu, Holger Boche, Rafael F. Schaefer, H. Vincent Poor

摘要:

有限状态反馈信道的容量是多字母表达式序列的极限。尽管许多努力,封闭形式的单字母容量表征是未知的日期。在本文中,反馈能力的研究,从一个基本的算法的角度来看,解决的问题是否可以算法计算的能力。为此,使用图灵机的概念,它提供了数字计算机的基本性能极限。结果表明,FSC的反馈容量是不是Banach-Mazur可计算的,因此不是Borel-Turing可计算的。因此,它表明,无论是可并行性或逆是不是Banach-Mazur可计算的,这意味着有可计算的FSC,它是不可能找到可计算的紧的上限和下限。此外,它表明,反馈能力不能表征为熵量的有限字母公式的最大化。

英文摘要:

The capacity of finite state channels (FSCs) with feedback has been shown to be a limit of a sequence of multi-letter expressions. Despite many efforts, a closed-form single-letter capacity characterization is unknown to date. In this paper, the feedback capacity is studied from a fundamental algorithmic point of view by addressing the question of whether or not the capacity can be algorithmically computed. To this aim, the concept of Turing machines is used, which provides fundamental performance limits of digital computers. It is shown that the feedback capacity of FSCs is not Banach-Mazur computable and therefore not Borel-Turing computable. As a consequence, it is shown that either achievability or converse is not Banach-Mazur computable, which means that there are computable FSCs for which it is impossible to find computable tight upper and lower bounds. Furthermore, it is shown that the feedback capacity cannot be characterized as the maximization of a finite-letter formula of entropic quantities.

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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