We introduce quasi-cyclic codes of index 1.5, construct such codes in terms of polynomials and matrices; and prove that the quasi-cyclic codes of index 1.5 are asymptotically good.
@article{arxiv.1505.02252,
title = {Quasi-cyclic Codes of Index 1.5},
author = {Yun Fan and Hualu Liu},
journal= {arXiv preprint arXiv:1505.02252},
year = {2015}
}