Linear multiuser precoding for synchronous CDMA

Author

Wang, Shu ; Caffery, James ; Shen, Jr Hanhong, Jr.

Author_Institution

Dept. of Electr. & Comput. Eng. & Comput. Sci., Cincinnati Univ., OH, USA

Volume

1

fYear

2003

fDate

20-20 March 2003

Firstpage

403

Abstract

Multiuser transmitter precoding is a technique that has been proposed for combating multiple-access interference (MAI). In this paper, the structure and principles of multiuser transmitter design are reviewed. In addition to multiuser precoding using the minimum mean-square error (MMSE) criterion [B. R. Vojoic and W. M. Jang, October 1998], we present a decorrelating multiuser precoder (DP), an approximate maximum likelihood (AML) multiuser precoder and a maximum asymptotic multiuser efficiency (MAME) multiuser precoder for mitigating MAI in synchronous CDMA systems. In addition, the geometric properties, asymptotic multiuser efficiency (AME) and mutual information rate between the transmitter and receiver are discussed. Finally, computer simulations are provided to demonstrate the performance of the proposed multiuser precoding algorithms.

Keywords

code division multiple access; interference suppression; least mean squares methods; maximum likelihood detection; multiuser detection; optimisation; radio transmitters; spread spectrum communication; synchronisation; CDMA system; MMSE; decorrelating multiuser precoder; maximum asymptotic multiuser efficiency multiuser precoder; minimum mean square error criterion; multiple access interference; multiuser transmitter design; multiuser transmitter precoding; mutual information rate; AWGN; Code division multiplexing; Decorrelation; Intersymbol interference; Maximum likelihood detection; Multiaccess communication; Multiple access interference; Mutual information; Signal processing algorithms; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE

Conference_Location

New Orleans, LA, USA

ISSN

1525-3511

Print_ISBN

0-7803-7700-1

Type

conf

DOI

10.1109/WCNC.2003.1200383

Filename

1200383