An Improved 8×8 Approximately Universal Code With the Large Normalized Diversity Product

摘要

When an approximately universal code is designed with cyclic division algebras, the normalized diversity product can be intrinsically increased by a small integer non-norm element. While 2 + i has been the smallest integer non-norm element in all known 8×8 designs over QAM, this paper presents another new 8×8 code with the smaller non-norm element 1 + i over QAM.