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arXiv 1401.5124cs.ITmath.IT
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具有成本约束的渠道:强逆向和分散

Channels with cost constraints: strong converse and dispersion

Victoria Kostina, Sergio Verdú

摘要:

本文显示了强逆和色散的无记忆信道的成本约束,并进行精细分析的三阶项的渐近展开的最大可实现的信道编码速率,表明它是等于$\frac 1 2 \frac {\log n}{n}$在大多数情况下的利益。该分析是基于一个非渐近的逆界表示的随机变量的分布称为$\mathsf b$倾斜的信息密度,这起着类似的作用,在有损信源编码的$\mathsf d$倾斜的信息。我们还分析了有损联合信源信道编码的基本限制与成本约束的信道。

英文摘要:

This paper shows the strong converse and the dispersion of memoryless channels with cost constraints and performs refined analysis of the third order term in the asymptotic expansion of the maximum achievable channel coding rate, showing that it is equal to $\frac 1 2 \frac {\log n}{n}$ in most cases of interest. The analysis is based on a non-asymptotic converse bound expressed in terms of the distribution of a random variable termed the $\mathsf b$-tilted information density, which plays a role similar to that of the $\mathsf d$-tilted information in lossy source coding. We also analyze the fundamental limits of lossy joint-source-channel coding over channels with cost constraints.

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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