Lattice decoding for joint detection in direct-sequence CDMA systems

被引：38

作者：

Brunel, L ^{[1
]}

Boutros, JJ ^{[1
]}

机构：

[1] ENST, Paris, France

来源：

IEEE TRANSACTIONS ON INFORMATION THEORY | 2003年 / 49卷 / 04期

关键词：

code-division multiple access (CDMA); lattice decoding; multiuser detection; sphere decoder;

D O I：

10.1109/TIT.2003.809506

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A new joint detection method based on sphere packing lattice decoding is presented in this paper. The algorithm is suitable for both synchronous and asynchronous multiple access direct-sequence code-division multiple-access (DS-CDMA) systems, and it may jointly detect up to 64 users with a reasonable complexity. The detection complexity is independent of the modulation size and large M-PAM or M-QAM constellations can be used. Furthermore, a theoretical gain analysis is performed in which the multiple-access system performance is derived from the lattice parameters.

引用

页码：1030 / 1037

页数：8

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