Description
Member of a family of \(2^{m+1}\)-dimensional lattices, denoted as BW\(_{2^{m+1}}\), that are the densest lattices known. Members include the integer square lattice \(\mathbb{Z}^2\), \(D_4\), the Gosset \(E_8\) lattice, and the \(\Lambda_{16}\) lattice, corresponding to \(m\in\{0,1,2,3\}\), respectively.
Protection
BW lattices in dimension \(2^{m+1}\) have a nominal coding gain of \(2^{m/2}\). Their kissing number is \(K_{\text{min}} = \prod_{i=1}^{m+1} (2^i + 2)\).
Parent
Children
Cousins
- Reed-Muller (RM) code — BW lattice codes are lattice analogues of RM codes in that both can be constructed recursively via a \(|u|u+v|\) construction [3][4].
- \(\mathbb{Z}^n\) hypercubic lattice code — The hypercubic lattice is the \(m=1\) BW lattice.
- Real-Clifford subgroup-orbit code — The automorphism group of BW lattices is a subgroup of index 2 of a real Clifford group [5][6] (see [7] for an explanation).
References
- [1]
- E. S. Barnes and G. E. Wall, “Some extreme forms defined in terms of Abelian groups”, Journal of the Australian Mathematical Society 1, 47 (1959) DOI
- [2]
- M. Broué and M. Enguehard, “Une famille infinie de formes quadratiques entières; leurs groupes d’automorphismes”, Annales scientifiques de l’École normale supérieure 6, 17 (1973) DOI
- [3]
- E. L. Cusack, “Error control codes for QAM signalling”, Electronics Letters 20, 62 (1984) DOI
- [4]
- G. D. Forney, “Coset codes. I. Introduction and geometrical classification”, IEEE Transactions on Information Theory 34, 1123 (1988) DOI
- [5]
- V. M. Sidelnikov, On a finite group of matrices and codes on the Euclidean sphere (in Russian), Probl. Peredach. Inform. 33 (1997), 35–54 (1997); English translation in Problems Inform. Transmission 33 (1997), 29–44
- [6]
- V. M. Sidelnikov, “On a finite group of matrices generating orbit codes on Euclidean sphere”, Proceedings of IEEE International Symposium on Information Theory DOI
- [7]
- G. Nebe, E. M. Rains, and N. J. A. Sloane, “The invariants of the Clifford groups”, (2000) arXiv:math/0001038
Page edit log
- Victor V. Albert (2022-11-08) — most recent
Cite as:
“Barnes-Wall (BW) lattice code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2022. https://errorcorrectionzoo.org/c/barnes_wall