E Agrell,
A Vardy, K Zeger - IEEE Transactions on Information …, 2001 - ieeexplore.ieee.org
Let A (n, d) denote the maximum possible number of codewords in an (n, d) binary code. We
establish four new bounds on A (n, d), namely, A (21, 4)/spl les/43689, A (22, 4)/spl …