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arXiv 0705.1159cs.ITmath.IT
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基于互信息的状态马尔可夫信道排序

Ordering Finite-State Markov Channels by Mutual Information

Andrew W. Eckford

摘要:

在以前的工作中,给出了一个排序结果的符号级错误概率使用一般马尔可夫信道下,迭代译码的LDPC码。本文在输入服从iid分布的假设下,将排序结果推广到互信息。对于某些信道,其中实现容量的输入分布是iid,这允许根据容量对信道进行排序。分析一般马尔可夫信道的复杂性通过这种排序得到缓解,因为可以立即确定具有不同状态数的宽类信道具有比给定信道更小的互信息。

英文摘要:

In previous work, an ordering result was given for the symbolwise probability of error using general Markov channels, under iterative decoding of LDPC codes. In this paper, the ordering result is extended to mutual information, under the assumption of an iid input distribution. For certain channels, in which the capacity-achieving input distribution is iid, this allows ordering of the channels by capacity. The complexity of analyzing general Markov channels is mitigated by this ordering, since it is possible to immediately determine that a wide class of channels, with different numbers of states, has a smaller mutual information than a given channel.

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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