the National Natural Science Foundation of China (60743007);Fujian Province Young Talent Program (2006F3044);Province Natural Science Foundation of Fujian (JA04169);Province Education Department Foundation of Fujian (JB05331);Beijing Municipal Commission of Education Disciplines and Graduate Education Projects (XK100130648)
The typeⅡ codes have been studied widely in applications since their appearance. With analysis of the algebraic structure of finite field of order 4 (i.e., GF(4)), some necessary and sufficient conditions that a ...