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
收藏
页码：1030 / 1037
页数：8
相关论文
共 18 条
[1]   Closest point search in lattices [J].
Agrell, E ;
Eriksson, T ;
Vardy, A ;
Zeger, K .
IEEE TRANSACTIONS ON INFORMATION THEORY, 2002, 48 (08) :2201-2214
[2]  
[Anonymous], 1993, 14 C GRETSI JUAN LES
[3]  
BIGLIERI B, 1991, INTRO TRELLIS CODED
[4]   Good lattice constellations for both Rayleigh fading and Gaussian channels [J].
Boutros, J ;
Viterbo, E ;
Rastello, C ;
Belfiore, JC .
IEEE TRANSACTIONS ON INFORMATION THEORY, 1996, 42 (02) :502-518
[5]  
BOUTROS J, 1996, THESIS ENST PARIS
[6]  
Cohen H., 1993, COMPUTATIONAL ALGEBR
[7]  
Conway J. H., 1998, SPHERE PACKINGS LATT
[8]  
FINCKE U, 1985, MATH COMPUT, V44, P463, DOI 10.1090/S0025-5718-1985-0777278-8
[9]   COSET CODES .1. INTRODUCTION AND GEOMETRICAL CLASSIFICATION [J].
FORNEY, GD .
IEEE TRANSACTIONS ON INFORMATION THEORY, 1988, 34 (05) :1123-1151
[10]   Zero forcing and minimum mean-square-error equalization for multiuser detection in code-division multiple-access channels [J].
Klein, A ;
Kaleh, GK ;
Baier, PW .
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 1996, 45 (02) :276-287
12