Part of this work was presented in September 1996 at the International Symposium on Information Theory and Its Applications in Victoria, Canada. NSF Graduate Fellowship and by NSF Grant NCR 9415754. Part of this work was presented in September 1996 at the International Symposium on Information Theory and Its Applications in Victoria, Canada. This question turns out to be theoretically very challenging. Examples of optimum lattices.
P has a total length of Delta.