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arXiv 1702.00727cs.ITmath.IT
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渠道间的投入退化与投入等效

On the Input-Degradedness and Input-Equivalence Between Channels

Rajai Nasser

摘要:

如果$W$可以通过在输入处的随机化从$W'$模拟,则信道$W$被称为从另一信道$W'$输入降级。我们提供了一个必要和充分的条件,从另一个通道输入退化。我们表明,任何解码器是好的$W'$也是好的$W$。我们提供了两个特征的输入退化,其中之一是类似于Blackwell-Sherman-Stein定理。我们说两个通道是输入等效的,如果他们是输入降级从对方。我们研究的拓扑结构,可以构建的输入等效通道的空间,我们调查他们的属性。此外,我们研究了几个信道参数和操作的连续性,在这些拓扑结构。

英文摘要:

A channel $W$ is said to be input-degraded from another channel $W'$ if $W$ can be simulated from $W'$ by randomization at the input. We provide a necessary and sufficient condition for a channel to be input-degraded from another one. We show that any decoder that is good for $W'$ is also good for $W$. We provide two characterizations for input-degradedness, one of which is similar to the Blackwell-Sherman-Stein theorem. We say that two channels are input-equivalent if they are input-degraded from each other. We study the topologies that can be constructed on the space of input-equivalent channels, and we investigate their properties. Moreover, we study the continuity of several channel parameters and operations under these topologies.

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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