An algorithm to enumerate codewords for third-order spectral-null codes

We introduce a new algorithm that can enumerate the codewords of third-order spectral-null codes. There are some efficient coding methods V. Skachek et al. (1998), R. M. Roth et al. (1994) for third-order spectral-null codes already; however no enumerative coding for third-order codes was proposed up to date.