Title
Flat tori, lattices and bounds for commutative group codes
Abstract
We show that commutative group spherical codes in R n , as introduced by D. Slepian, are directly related to flat tori and quotients of lattices. As consequence of this view, we derive new results on the geometry of these codes and an upper bound for their cardinality in terms of minimum distance and the maximum center density of lattices and general spherical packings in the half dimension of the code. This bound is tight in the sense it can be arbitrarily approached in any dimension. Examples of this approach and a comparison of this bound with Union and Rankin bounds for general spherical codes is also presented.
Year
DOI
Venue
2008
10.1007/s10623-008-9183-9
Des. Codes Cryptography
Keywords
Field
DocType
upper bound,group codes
Abelian group,Discrete mathematics,Combinatorics,Lattice (order),Upper and lower bounds,Quotient,Cardinality,Torus,Linear code,Mathematics
Journal
Volume
Issue
ISSN
49
1-3
0925-1022
Citations 
PageRank 
References 
5
0.58
9
Authors
2
Name
Order
Citations
PageRank
Rogério M. Siqueira150.92
Sueli I. R. Costa2218.66