Lattice code decoder for space-time codes

被引:523
作者
Damen, O [1 ]
Chkeif, A [1 ]
Belfiore, JC [1 ]
机构
[1] Ecole Natl Super Telecommun, F-75634 Paris 13, France
关键词
diversity lattices; maximum likelihood decoding; multi-antenna; rotated constellations; space-time codes;
D O I
10.1109/4234.846498
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 [电子科学与技术];
摘要
We explore in this letter the lattice sphere packing representation of a multi-antenna system and the algebraic space-time (ST) codes. We apply the sphere decoding (SD) algorithm to the resulted lattice code. For the uncoded system, SD yields, with small increase in complexity, a huge improvement over the well-known V-BLAST detection algorithm. SD of algebraic ST codes exploits the full diversity of the coded multi-antenna system, and makes the proposed scheme very appealing to take advantage of the richness of the multi-antenna environment. The fact that the SD does not depend on the constellation size, gives rise to systems with very high spectral efficiency, maximum-likelihood performance, and low decoding complexity.
引用
收藏
页码:161 / 163
页数:3
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