arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.11245cs.ITmath.IT
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整数剩余环上卷积码的列表译码

List decoding of Convolutional Codes over integer residue rings

Julia Lieb, Diego Napp, Raquel Pinto

摘要:

$\ZZ[D]$上的卷积码$\C$是$\ZZN[D]$的$\ZZ[D]$ -子模块,其中$\ZZ[D]$代表具有$\ZZ$中的系数的多项式的环。在本文中,我们研究的列表解码问题时,这些代码的传输是在一个擦除信道,也就是说,我们研究了有多少信息可以恢复从码字$w\in \C$时,它的一些系数已被删除。我们使用$w$的$p$ -adic展开和代码的奇偶校验多项式矩阵的特定表示来实现。从这些矩阵多项式表示中,我们递归地选择$w$必须满足的某些方程,并且只有$p^{r-1}\ZZ$域中的系数。我们利用滑动奇偶校验矩阵的自然块Toeplitz结构,得到一个逐步的方法来获得一个列表的可能的码字为一个给定的损坏的码字$w$,也就是说,一个列表与最接近的码字$w$。

英文摘要:

A convolutional code $\C$ over $\ZZ[D]$ is a $\ZZ[D]$-submodule of $\ZZN[D]$ where $\ZZ[D]$ stands for the ring of polynomials with coefficients in $\ZZ$. In this paper, we study the list decoding problem of these codes when the transmission is performed over an erasure channel, that is, we study how much information one can recover from a codeword $w\in \C$ when some of its coefficients have been erased. We do that using the $p$-adic expansion of $w$ and particular representations of the parity-check polynomial matrix of the code. From these matrix polynomial representations we recursively select certain equations that $w$ must satisfy and have only coefficients in the field $p^{r-1}\ZZ$. We exploit the natural block Toeplitz structure of the sliding parity-check matrix to derive a step by step methodology to obtain a list of possible codewords for a given corrupted codeword $w$, that is, a list with the closest codewords to $w$.

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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