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arXiv 2210.04556cs.ITmath.IT
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从可数字母源产生公共随机数

Common Randomness Generation from Sources with Countable Alphabet

Wafa Labidi, Rami Ezzine, Christian Deppe, Moritz Wiese, Holger Boche

摘要:

我们研究了一个标准的两源模型的共同随机性(CR)的产生,其中爱丽丝和鲍勃产生一个共同的随机变量,通过观察独立同分布(i.i.d.)相关源的样本在可数无限字母表上。另外,允许双方尽可能少地通过嘈杂的无记忆信道进行通信。在我们的工作中,我们给出了该模型的CR容量的一个单字母公式,并给出了严格的证明。这是一个具有挑战性的场景,因为有限字母表的一些性质,即熵不能扩展到可数无限的情况。值得注意的是,众所周知,香农熵实际上在具有可数无限支持的所有概率分布上都是不连续的。

英文摘要:

We study a standard two-source model for common randomness (CR) generation in which Alice and Bob generate a common random variable with high probability of agreement by observing independent and identically distributed (i.i.d.) samples of correlated sources on countably infinite alphabets. The two parties are additionally allowed to communicate as little as possible over a noisy memoryless channel. In our work, we give a single-letter formula for the CR capacity for the proposed model and provide a rigorous proof of it. This is a challenging scenario because some of the finite alphabet properties, namely of the entropy can not be extended to the countably infinite case. Notably, it is known that the Shannon entropy is in fact discontinuous at all probability distributions with countably infinite support.

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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