Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/733
Title: A chaos tracker applied to non-coherent detection in chaos-based digital communication systems
Authors: Feng, J
Tse, CKM 
Lau, FCM 
Keywords: Algorithms
Chaos theory
Neural networks
Spurious signal noise
Synchronization
Transmitters
White noise
Issue Date: 2001
Publisher: IEEE
Source: ISCAS 2001 : the 2001 IEEE International Symposium on Circuits and Systems : 6-9 May 2001, Darling Harbour, Sydney, Australia : conference proceedings, p. III-795-798 How to cite?
Abstract: In chaos-based communication systems, parameter variation in the chaos generator and additive channel noise represent two practical problems that are hard to solve. For chaos-based digital communication, non-coherent detection has the advantage that the receiver does not need to reproduce the same chaos basis function that has been generated in the transmitter. Such reproduction typically requires a fragile operation of chaos synchronisation between the transmitter and the receiver. In this paper, we consider non-coherent detection under the practical condition of the transmitted signal being contaminated by noise and its generating function being subject to strong parameter variation. A novel tracker is proposed for reconstructing the transmitted chaotic signal. This tracker uses a modified radial-basis-function (RBF) neural network which incorporates a learning algorithm for tracking the noisy chaotic signal under parameter variation. Using this tracker, a non-coherent detector is designed for demodulating chaos-shift-keying (CSK) signals in a CSK digital communication system. Computer simulations, in which the Chua's circuit is used as the chaos generator, are presented to demonstrate the tracking ability and CSK demodulation of the proposed method.
URI: http://hdl.handle.net/10397/733
ISBN: 0-7803-6685-9
Rights: © 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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