Cyclic codes over Z4 of oddly even length
This paper classifies all cyclic codes over Z4 of length 2n,n odd. Descriptions are given in terms of discrete Fourier transforms, generator polynomials, parity check matrices, and the concatenated (a+b|b) construction. Some results about the minimum Lee weights of these codes and self-dual codes are also included.
cyclic codes z4-linear codes galois rings