Algebraic constructions of densest lattices

Author(s)

Jorge, Grasiele C. ^[1] ; de Andrade, Antonio A. ^[2] ; Costa, Sueli I. R. ^[3] ; Strapasson, Joao E. ^[4]

Affiliation

^[1] Univ Fed Sao Paulo, UNIFESP, BR-12247014 Sao Jose Dos Campos, SP - Brazil

^[2] Sao Paulo State Univ, UNESP, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[3] Univ Estadual Campinas, UNICAMP, BR-13083859 Campinas, SP - Brazil

^[4] Univ Estadual Campinas, UNICAMP, BR-13484350 Limeira, SP - Brazil

• Document type: Journal article
• Source: Journal of Algebra; v. 429, p. 218-235, MAY 1 2015.
• Web of Science Citations: 2

Abstract

The aim of this paper is to investigate rotated versions of the densest known lattices in dimensions 2, 3, 4, 5, 6, 7, 8, 12 and 24 constructed via ideals and free Z-modules that are not ideals in subfields of cyclotomic fields. The focus is on totally real number fields and the associated full diversity lattices which may be suitable for signal transmission over both Gaussian and Rayleigh fading channels. We also discuss on the existence of a number field K such that it is possible to obtain the lattices A(2), E-6 and E-7 via a twisted embedding applied to a fractional ideal of O-K. (C) 2015 Elsevier Inc. All rights reserved. (AU)

• FAPESP's process: 13/25977-7 - Security and reliability of Information: theory and practice
• Grantee: Marcelo Firer
• Support Opportunities: Research Projects - Thematic Grants