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On unequal error protection LDPC codes based on plotkin-type constructions

机译:基于plotkin型构造的不等差错保护LDPC码

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摘要

We introduce a new family of unequal error protection (UEP) codes, based on low-density parity-check (LDPC) component codes and Plotkin-type constructions. The codes are decoded iteratively in multiple stages, and the order of decoding determines the level of error protection. The level of UEP among the code bits is also influenced by the choice of the LDPC component codes and by some new reliability features incorporated into the decoding process. The proposed scheme offers a very good tradeoff between code performance on one side and encoding/decoding and storage complexity on the other side. The novel approach to UEP also allows for finding simple approximations for the achievable degrees of UEP, which can be used to govern practical code design implementations.
机译:我们基于低密度奇偶校验(LDPC)组件代码和Plotkin型构造引入了新的不等错误保护(UEP)代码系列。代码在多个阶段中被迭代地解码,并且解码的顺序确定了错误保护的级别。编码位之间的UEP级别也受LDPC分量码的选择以及合并到解码过程中的一些新可靠性特征的影响。所提出的方案在一方面的代码性能与另一方面的编码/解码和存储复杂性之间提供了很好的折衷。 UEP的新颖方法还允许找到UEP的可达到程度的简单近似值,该近似值可用于管理实际的代码设计实现。

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