An Improved Bound for the Dimension of Subfield Subcodes
Tomoharu Shibuya, Ryutaroh Matsumoto, Kohichi Sakaniwa · 1997
this paper, we give a new lower bound for the dimension of subfield subcodes. This bound improves the lower bound given by Stichtenoth. A BCH code and a subfield subcode of algebraic geometric code on a hyper elliptic curve are discussed as special cases.