Distributed and centralized multiuser detection with antenna arrays

Author

Jang, Won Mee ; Wu, Weixin

Author_Institution

Dept. of Comput. & Electron. Eng., Univ. of Nebraska-Lincoln, Omaha, NE, USA

Volume

4

Issue

3

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

855

Lastpage

860

Abstract

In this letter, we have analyzed and compared two different multiuser detection receiver structures that are appropriate for code-division multiple-access systems with multiple antennas. We compare the distributed decorrelator (where signal decorrelation is performed at each receiving antenna) and the centralized decorrelator (where decorrelation is performed once collectively). We show that they provide the same performance in additive Gaussian noise channels. The distributed decorrelator provides better performance in flat fading channels.

Keywords

AWGN channels; antenna arrays; code division multiple access; distributed algorithms; fading channels; multiuser detection; radio receivers; receiving antennas; additive Gaussian noise channel; antenna array; centralized multiuser detection; code-division multiple-access system; distributed decorrelator; distributed multiuser detection; fading channel; radio receiver structure; receiving antenna; Antenna arrays; Broadband antennas; Decorrelation; Downlink; Fading; Multiaccess communication; Multiuser detection; Performance analysis; Receiving antennas; Sections; Antenna array; code division multiple access (CDMA); decorrelation; fading channels; multiuser detection;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2005.846972

Filename

1427674