A new class of asymptotically good codes beyond the Zyablov bound
Yasuo Sugiyama, M. Kasahara, Shigeichi Hirasawa, T. Namekawa · IEEE Transactions on Information Theory · 1978
A new class of asymptotically good codes is constructed by iteratively superimposing Justesen codes on a Justesen code. The lower bound for the new codes lies above the Zyahlov bound for rater, 0.31 < r < 1.