定义了环(F2+uF2+…+ukF2)n到F2(k+1)n的一种新的Gray映射及线性码李重量分布.利用二元线性码及其对偶码的重量分布关系和新的Gray映射,建立了环F2+uF2+…+ukF2上线性码及其对偶码之间多种重量分布的Mac Williams恒等式.
A new Gray map from(F2+uF2+…+ukF2)n to F(k+1)n2 and Lee weight distribution of linear codes over F2+uF2+…+ukF2 was defined.The MacWilliams identities for different weight enumerators of the linear codes and their dual codes over F2+uF2+…+ukF2 were given by employing the relationship between binary linear codes and their dual codes and new Gray map.