arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1707.04401cs.ITmath.IT
收藏

随机编码错误概率精确渐近性的综合分析

Comprehensive Analysis on Exact Asymptotics of Random Coding Error Probability

Junya Honda

摘要:

本文研究了无记忆信道中固定速率下随机码的错误概率。随机编码是实现信道容量的基本方案,并且已经对解码错误概率的渐近性进行了许多研究。Gallager推导出了低于临界速率的误差概率的精确渐近性(即相对误差渐近消失的界)。另一方面,除了强对称信道和强非格点信道外,固定速率高于临界速率的精确渐近性一直是未知的。本文推导了一般无记忆信道的精确渐近性,覆盖了所有以前未解决的情况。分析表明,强对称通道和强非格点通道对应于两种极端情况,一般通道的渐近性表达式要复杂得多。

英文摘要:

This paper considers error probabilities of random codes for memoryless channels in the fixed-rate regime. Random coding is a fundamental scheme to achieve the channel capacity and many studies have been conducted for the asymptotics of the decoding error probability. Gallager derived the exact asymptotics (that is, a bound with asymptotically vanishing relative error) of the error probability below the critical rate. On the other hand, exact asymptotics for fixed rate above the critical rate has been unknown except for symmetric channels (in the strong sense) and strongly nonlattice channels. This paper derives the exact asymptotics for general memoryless channels covering all previously unsolved cases. The analysis reveals that strongly symmetric channels and strongly nonlattice channels correspond to two extreme cases and the expression of the asymptotics is much complicated for general channels.

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。

↑