A novel iterative multiuser detector for complex modulation schemes

被引：35

作者：

Lampe, A

Schober, R

Gerstacker, W

Huber, J

机构：

[1] Univ Erlangen Nurnberg, Lehrstuhl Informationsubertragung, D-91058 Erlangen, Germany

[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2002年 / 20卷 / 02期

关键词：

direct sequence code division multiple access; iterated soft decision interference cancellation; widely linear filtering;

D O I：

10.1109/49.983351

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a novel multiuser detector for direct sequence code division multiple access is proposed. The receiver performs iterated soft decision interference cancellation (ISDIC) based on multiuser interference suppression filters designed for minimization of the mean-square error. Assuming a complex modulation format, we show that the multiuser interference becomes rotationally variant in the course of the iterations. Regarding this rotational variance in the design of the multiuser interference suppression filter, the presented iterative multiuser detector achieves significant performance gains compared with conventional ISDIC employing a standard minimum mean-squared error filter which is optimum only for rotationally invariant multiuser interference.

引用

页码：339 / 350

页数：12

共 27 条

[1]

[Anonymous], 1999, POWER BANDWIDTH EFFI

[2] New class of multiuser CDMA receivers based on the minimum mean-output-energy strategy [J].

Buzzi, S ;

Lops, M ;

Tulino, AM .

2000 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY, PROCEEDINGS, 2000, :355-355

[3]

DAS S, 1998, P IEEE GLOB TEL C GL, P106

[4] Improved parallel interference cancellation for CDMA [J].

Divsalar, D ;

Simon, MK ;

Raphaeli, D .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1998, 46 (02) :258-268

[5]

EVANS JS, 1998, UNPUB IEEE T INFORM

[6] Blind widely linear multiuser detection [J].

Gelli, G ;

Paura, L ;

Ragozini, ARP .

IEEE COMMUNICATIONS LETTERS, 2000, 4 (06) :187-189

[7]

GERSTACKER W, UNPUB IEEE T COMMUN

[8] A matrix-algebraic approach to linear parallel interference cancellation in CDMA [J].

Guo, DN ;

Rasmussen, LK ;

Sun, SM ;

Lim, TJ .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2000, 48 (01) :152-161

[9]

Haykin S., 1991, ADAPTIVE FILTER THEO

[10]

Lampe A, 2000, 2000 IEEE SIXTH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS, PROCEEDINGS, VOL 1 AND 2, P368, DOI 10.1109/ISSSTA.2000.876458

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