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arXiv 1102.2939cs.ITmath.IT
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循环码在BCH界下的译码复杂度

On the Decoding Complexity of Cyclic Codes Up to the BCH Bound

Davide Schipani, Michele Elia, Joachim Rosenthal

摘要:

循环码$[n,k,d]$的标准代数解码算法直到BCH界$t$对于相对小的$n$是非常有效和实用的,而对于大的$n$则变得不实用,因为其计算复杂性是$O(nt)$。本文的目的是显示如何使这种代数解码计算更有效:在二进制码的情况下,例如,从$O(nt)$到$O(t\sqrt n)$的伴随式计算的复杂性下降,并从$O(nt)$到最多$\max \{O(t\sqrt n), O(t^2\log(t)\log(n))\}$的错误位置。

英文摘要:

The standard algebraic decoding algorithm of cyclic codes $[n,k,d]$ up to the BCH bound $t$ is very efficient and practical for relatively small $n$ while it becomes unpractical for large $n$ as its computational complexity is $O(nt)$. Aim of this paper is to show how to make this algebraic decoding computationally more efficient: in the case of binary codes, for example, the complexity of the syndrome computation drops from $O(nt)$ to $O(t\sqrt n)$, and that of the error location from $O(nt)$ to at most $\max \{O(t\sqrt n), O(t^2\log(t)\log(n))\}$.

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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