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arXiv 1004.1503cs.ITmath.IT
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等重码的一种新构造

A New Construction for Constant Weight Codes

Tuvi Etzion, Alexander Vardy

摘要:

提出了一种新的等重码构造方法。码是从向量空间$\F_q^n$的$k$维子空间构造的.这些子空间形成格拉斯曼空间$\cG_q(n,k)$中的常维码。所构造的码中有些是参数未知的最优等重码。对所构造的码给出了一种有效的纠错算法。如果恒定维度码具有有效的编码和解码算法,则构造的恒定权重码也具有有效的编码和解码算法。

英文摘要:

A new construction for constant weight codes is presented. The codes are constructed from $k$-dimensional subspaces of the vector space $\F_q^n$. These subspaces form a constant dimension code in the Grassmannian space $\cG_q(n,k)$. Some of the constructed codes are optimal constant weight codes with parameters not known before. An efficient algorithm for error-correction is given for the constructed codes. If the constant dimension code has an efficient encoding and decoding algorithms then also the constructed constant weight code has an efficient encoding and decoding algorithms.

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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