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arXiv 0904.2237cs.ITcs.DMmath.COmath.IT
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具有五个非零重量的二元循环码

On Binary Cyclic Codes with Five Nonzero Weights

Jinquan Luo

摘要:

令$q=2^n$、$0\leq k\leq n-1$、$n/\gcd(n,k)$为奇数,且$k\neq n/3, 2n/3$。本文确定了下列指数和\[\sum\limits_{x\in \bF_q}(-1)^{\mathrm{Tr}_1^n(αx^{2^{2k}+1}+βx^{2^k+1}+\ga x)}\quad(α,β,\ga\in \bF_{q})\]的值分布.作为应用,还确定了具有奇偶校验多项式$h_1(x)h_2(x)h_3(x)$的二进制循环码$\cC$的权重分布,其中$h_1(x)$、$h_2(x)$和$h_3(x)$分别是$\bF_q$的本原元素$π$的$π^{-1}$、$π^{-(2^k+1)}$和$π^{-(2^{2k}+1)}$的最小多项式。

英文摘要:

Let $q=2^n$, $0\leq k\leq n-1$, $n/\gcd(n,k)$ be odd and $k\neq n/3, 2n/3$. In this paper the value distribution of following exponential sums \[\sum\limits_{x\in \bF_q}(-1)^{\mathrm{Tr}_1^n(αx^{2^{2k}+1}+βx^{2^k+1}+\ga x)}\quad(α,β,\ga\in \bF_{q})\] is determined. As an application, the weight distribution of the binary cyclic code $\cC$, with parity-check polynomial $h_1(x)h_2(x)h_3(x)$ where $h_1(x)$, $h_2(x)$ and $h_3(x)$ are the minimal polynomials of $π^{-1}$, $π^{-(2^k+1)}$ and $π^{-(2^{2k}+1)}$ respectively for a primitive element $π$ of $\bF_q$, is also determined.

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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