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Type: Artigo de periódico
Title: Commutative group codes in R-4, R-6, R-8 and R-16-Approaching the bound
Author: Alves, C
Costa, SIR
Abstract: Spherical codes in even dimensions n = 2m generated by a commutative group of orthogonal matrices can be determined by a quotient of m-dimensional lattices when the sublattice has an orthogonal basis. We discuss here the existence of orthogonal sublattices of the lattices A(2), D-3, D-4 and E-8, which have the best packing density in their dimensions, in order to generate families of commutative group codes approaching the bound presented in Siqueira and Costa (2008) [14]. (C) 2013 Elsevier B.V. All rights reserved.
Subject: Group codes
Spherical codes
Minimum distance
Packing density
Country: Holanda
Editor: Elsevier Science Bv
Citation: Discrete Mathematics. Elsevier Science Bv, v. 313, n. 16, n. 1677, n. 1687, 2013.
Rights: fechado
Identifier DOI: 10.1016/j.disc.2013.04.005
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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