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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/721

Title: Generalized correlation-delay-shift-keying scheme for noncoherent chaos-based communication systems
Authors: Tam, Wai M.
Lau, Francis Chung-ming
Tse, C. K. Michael
Subjects: Approximation theory
Binary codes
Bit error rate
Chaos theory
Computer simulation
Phase shift keying
Spurious signal noise
Issue Date: 2004
Publisher: IEEE
Citation: Proceedings of 2004 IEEE International Symposium on Circuits and Systems, May 23-26, 2004, Vancouver, British Columbia, Canada, p. IV-601-604.
Abstract: In this paper, we propose a generalized correlation-delay-shift-keying (GCDSK) scheme for noncoherent chaos-based communications. In the proposed scheme, several delayed versions of a chaotic signal are first produced. Some of them will be modulated by the binary data to be transmitted. The delayed signals will then be added to the original chaotic signal and transmitted. At the receiver, a simple correlator-type detector is employed to decode the binary symbols. The approximate bit error rate (BER) of the GCDSK scheme is derived analytically based on a Gaussian approximation. Simulations are performed and compared with the noncoherent correlation-delay-shift-keying (CDSK) and differential chaos-shift-keying (DCSK) modulation schemes. The effects of the spreading factor, length of delay and the number of delay units on the BER are fully studied. It is found that GCDSK can achieve better BER performance than DCSK under reasonable bitenergy-to-noise-power-spectral-density ratios.
Rights: © 2004 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.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holders.
Type: Conference Paper
URI: http://hdl.handle.net/10397/721
ISBN: 078038251X
Appears in Collections:EIE Conference Papers & Presentations

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