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arXiv 1702.08003cs.ITmath.IT
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非对称广播信道的精确随机编码指数及通用译码器

Exact Random Coding Exponents and Universal Decoders for the Asymmetric Broadcast Channel

Ran Averbuch, Neri Merhav

摘要:

这项工作包含两个主要贡献有关的非对称广播信道。第一个是两个用户的精确随机编码误差指数的分析,第二个是通用解码器的推导。这些通用解码器是最大互信息(MMI)通用解码器的某些变体,其实现了最优解码的相应随机编码指数。此外,我们引入了一些下界,这涉及到非常少的参数优化,不像原来的,确切的指数,这涉及到辅助概率分布的最小化。二进制对称广播信道的数值结果表明,改进了以前推导出的误差指数相同的模型。

英文摘要:

This work contains two main contributions concerning the asymmetric broadcast channel. The first is an analysis of the exact random coding error exponents for both users, and the second is the derivation of universal decoders for both users. These universal decoders are certain variants of the maximum mutual information (MMI) universal decoder, which achieve the corresponding random coding exponents of optimal decoding. In addition, we introduce some lower bounds, which involve optimization over very few parameters, unlike the original, exact exponents, which involve minimizations over auxiliary probability distributions. Numerical results for the binary symmetric broadcast channel show improvements over previously derived error exponents for the same model.

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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