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累积-重复-累积码:以有限复杂度实现二进制擦除信道容量的系统码

Accumulate-Repeat-Accumulate Codes: Systematic Codes Achieving the Binary Erasure Channel Capacity with Bounded Complexity

Henry D. Pfister, Igal Sason

摘要:

本文介绍了累积-重复-累积(ARA)码的集合,它在二进制擦除信道(BEC)上以每信息比特{ \em有界复杂度}渐近地达到容量。它还介绍了对称性的建设中发挥核心作用的能力实现合奏的BEC。这里的结果改善性能和复杂性之间的权衡提供的第一个容量实现合奏的不规则重复累积(IRA)代码与有限的复杂性,每个信息位,这些IRA合奏是由Pfister,Sason和Urbanke先前构建。ARA码的优越性与中等到大的块长度的例证计算机模拟,比较它们的性能与以前报道的容量实现的集合的LDPC和IRA码。ARA码还具有系统性的优点。

英文摘要:

The paper introduces ensembles of accumulate-repeat-accumulate (ARA) codes which asymptotically achieve capacity on the binary erasure channel (BEC) with {\em bounded complexity} per information bit. It also introduces symmetry properties which play a central role in the construction of capacity-achieving ensembles for the BEC. The results here improve on the tradeoff between performance and complexity provided by the first capacity-achieving ensembles of irregular repeat-accumulate (IRA) codes with bounded complexity per information bit; these IRA ensembles were previously constructed by Pfister, Sason and Urbanke. The superiority of ARA codes with moderate to large block length is exemplified by computer simulations which compare their performance with those of previously reported capacity-achieving ensembles of LDPC and IRA codes. The ARA codes also have the advantage of being systematic.

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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