Construction of optimal Type IV self-dual codes over F/sub 2/+uF/sub 2/
Thomas Aaron Gulliver, Masaaki Harada · IEEE Transactions on Information Theory · 1999
Previously, Type IV self dual codes over the ring F/sub 2/+uF/sub 2/ of order 4 have been introduced. In this paper, we construct five optimal Type IV self-dual codes which are the first examples of such codes for that length. We also give several new optimal type IV self-dual codes, and Type IV self-dual codes which improve the upper bounds for minimum weights.