Perceptron-based CDMA receiver in non-Gaussian noise

B. S. Sharif, T. C. Chuah, O. R. Hinton, S. A. Jimaa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Linear adaptive interference suppression is an effective approach in mitigating Multiple Access Interference (MAI) in CDMA communications channels under Gaussian noise. However, applying Gaussian-based linear receivers to realistic communications channels affected by impulsive noise can result in performance degradation and is therefore a suboptimal solution. The linear adaptive receiver is limited by its structural formulation as a simple linear combiner with a hyperplanar decision boundary that is unable to form arbitrarily non-linear boundaries inherent in CDMA communications, particularly under hostile channel conditions. In this paper, we consider the use of a multilayer perceptron (MLP) for robust single-user detection in multiuser non-Gaussian channels; the receiver is trained via the hack-propagation (BP) algorithm using a known training sequence. Theoretical arguments supported by simulation suggest that the perceptron-based receiver, which combines the basic attributes of nonlinearity, adaptivity and non-parametric approach, shows promise as a near-far resistant receiver in non-Gaussian environments.

Original languageBritish English
Title of host publicationICECS 2003 - Proceedings of the 2003 10th IEEE International Conference on Electronics, Circuits and Systems
Pages643-646
Number of pages4
DOIs
StatePublished - 2003
Event2003 10th IEEE International Conference on Electronics, Circuits and Systems, ICECS2003 - Sharjah, United Arab Emirates
Duration: 14 Dec 200317 Dec 2003

Publication series

NameProceedings of the IEEE International Conference on Electronics, Circuits, and Systems
Volume2

Conference

Conference2003 10th IEEE International Conference on Electronics, Circuits and Systems, ICECS2003
Country/TerritoryUnited Arab Emirates
CitySharjah
Period14/12/0317/12/03

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