Robust detection in DS-CDMA

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...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2002-01, Vol.51 (1), p.155-170
Main Authors: Delic, H., Hocanin, A.
Format: Article
Language:English
Subjects:
Applied sciences
Breakdown
Correlation
Correlators
Detection, estimation, filtering, equalization, prediction
Electric breakdown
Error probability
Exact sciences and technology
Gaussian
Information, signal and communications theory
Interference
Matched filters
Multiaccess communication
Noise
Noise level
Noise robustness
Obstacles
Performance evaluation
Power system modeling
Receivers
Signal and communications theory
Signal, noise
Telecommunications and information theory
Working environment noise
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Description
Summary: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.
ISSN:0018-9545
1939-9359
DOI:10.1109/25.992076