Robust detection in DS-CDMA

Author

Deliç, Hakan ; Hocanin, Aykut

Author_Institution

Dept. of Electr. & Electron. Eng., Bogazici Univ., Istanbul, Turkey

Volume

51

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

155

Lastpage

170

Abstract

Robust single-user detection is employed in a direct sequence code-division multiple-access (DS-CDMA) system in which the noise process contains impulsive components. The breakdown point is computed for a mixture noise model. The bit error probability expressions are derived under a Gaussian mixture. The performance is also evaluated in the presence of power imbalance and asynchronous reception. Noise, rather than interference, is shown to be the primary obstacle in achieving good performance for certain practical signal power and user load levels. It is concluded that DS-CDMA employing a robust correlator receiver performs better than the conventional matched filter in an impulsive noise environment

Keywords

Gaussian processes; cellular radio; code division multiple access; error statistics; impulse noise; radio receivers; signal detection; spread spectrum communication; DS-CDMA; Gaussian mixture; asynchronous reception; bit error probability expressions; breakdown point; direct sequence code-division multiple-access system; impulsive components; impulsive noise environment; mixture noise model; noise process; power imbalance; robust correlator receiver; robust detection; signal power; single-user detection; user load levels; Correlators; Electric breakdown; Error probability; Interference; Matched filters; Multiaccess communication; Noise level; Noise robustness; Power system modeling; Working environment noise;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.992076

Filename

992076