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F2+uF2上奇偶长循环码的结构特性
引用本文:盖新貌,李超[,].F2+uF2上奇偶长循环码的结构特性[J].计算机工程与科学,2007,29(7):74-76.
作者姓名:盖新貌  李超[  ]
作者单位:[1]国防科技大学数学与系统科学系,湖南长沙410073 [2]东南大学移动通信国家重点实验室,江苏南京210096
基金项目:国家自然科学基金 , 国家重点实验室基金
摘    要:码长为2n(n为奇数)的循环码被称为奇偶长的循环码。本文证明了F2+uF2上奇偶长循环码具有形如(a1(x^2)a3(x^2)a4(x^2)a5(x)a6(x),ua1(x^2)a2(x^2)a4(x)a5(x^2))的结构,其中ai(x),i=1,2,…,6,满足Пi=1^6ai(x)=x^n-1,而且a5^ ~(x)≡a5(x)(modu),并给出了奇偶长循环码之对偶码的生成元表达。

关 键 词:F2+uF2  循环码  生成元  准素多项式
文章编号:1007-130X(2007)07-0074-03
修稿时间:2006-05-222006-09-19

The Structural Properties of the Cyclic Codes over F2+uF2 with Oddly Even Lengths
GAI Xin-mao,LI Chao.The Structural Properties of the Cyclic Codes over F2+uF2 with Oddly Even Lengths[J].Computer Engineering & Science,2007,29(7):74-76.
Authors:GAI Xin-mao  LI Chao
Affiliation:1. Department of Mathematics and System Science,National University of Defense Technology,Changsha 410073; 2. State Key Laboratory of Mobile Communications,Southeast University,Nanjing 210096,China
Abstract:A cyclic code with length 2n(n is odd)is called a cyclic code with oddly even lengths. We prove that any cyclic code over F2 +uF2 with oddly even l engths has generators of the form (a1 (x^2 )a3 (x^2 )a4 (x^2 )a5^ ~(x)a6 (x), ua1 (x^2 )a2 (x^2)a4 (x)a5 (x^2)), whereПi=1^6ai(x)=x^n-1,a5^  ~(x)≡a5(x)(modu),and. the structure of its dual code has been given in this paper as well.
Keywords:F2 uF2  cyclic code  generator  primary polynomial
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