A note on sub-orthogonal lattices
It is shown that, given any $k$-dimensional lattice $Λ$, there is a lattice sequence $Λ_w$, $w\in \mathbb Z$, with sub-orthogonal lattice $Λ_o \subset Λ$, converging to $Λ$ (unless equivalence), also we discuss the conditions for faster convergence.
cs.IT↗