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arXiv 1202.6095cs.ITmath.IT
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用迭代硬判决译码逼近高速率容量

Approaching Capacity at High-Rates with Iterative Hard-Decision Decoding

Yung-Yih Jian, Henry D. Pfister, Krishna R. Narayanan

摘要:

现在已经观察到各种低密度奇偶校验(LDPC)集合接近具有消息传递解码的容量。然而,所有这些都使用软(即,非二进制)消息和它们的分量码的后验概率(APP)解码。在本文中,我们表明,可以接近容量在高速率使用迭代硬判决解码(HDD)的广义乘积码。具体而言,一类空间耦合的GLDPC码与BCH分量码被认为是,据观察,在高速率制度,他们可以接近容量下提出的迭代HDD。这些码可以被看作是广义乘积码,并且与编织分组码密切相关。提出了一种迭代HDD算法,使人们能够通过密度演化(DE)分析这些代码的性能。

英文摘要:

A variety of low-density parity-check (LDPC) ensembles have now been observed to approach capacity with message-passing decoding. However, all of them use soft (i.e., non-binary) messages and a posteriori probability (APP) decoding of their component codes. In this paper, we show that one can approach capacity at high rates using iterative hard-decision decoding (HDD) of generalized product codes. Specifically, a class of spatially-coupled GLDPC codes with BCH component codes is considered, and it is observed that, in the high-rate regime, they can approach capacity under the proposed iterative HDD. These codes can be seen as generalized product codes and are closely related to braided block codes. An iterative HDD algorithm is proposed that enables one to analyze the performance of these codes via density evolution (DE).

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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