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Perceptron-based CDMA receiver in non-Gaussian noise

Lookup NU author(s): Professor Bayan Sharif, Teong Chuah, Emeritus Professor Oliver Hinton

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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. © 2003 IEEE.

Publication metadata

Author(s): Hinton O; Sharif B; Chuah T; Jimaa S

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Proceedings of the 2003 10th IEEE International Conference on Electronics, Circuits and Systems (ICECS 2003)

Year of Conference: 2003

Pages: 643-646

Publisher: IEEE

URL: http://dx.doi.org/10.1109/ICECS.2003.1301867

DOI: 10.1109/ICECS.2003.1301867

Library holdings: Search Newcastle University Library for this item

ISBN: 0780381637

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