Z_(2~k)上二次剩余码的自同构群

The Automorphism Group of Quadratic Residue Codes Over Z_(2~κ)

本文根据Z2^k上二次剩余码的性质,给出了其扩展码自同构群的一个重要子群,这对于Z2^k上二次剩余码的译码算法的设计具有重要意义.

In this paper, by using the properties of the quadratic residue （QR） codes over Z2^k, we get an important subgroup of the automorphism group of extended QR codes over Z2^k, which will be useful for the design and analysis of decoding algorithm.