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Title: A multiple access scheme for chaos-based digital communication systems utilizing transmitted reference
Authors: Tam, Wai M.
Lau, Francis Chung-ming
Tse, C. K. Michael
Subjects: Adaptive filter
Bit error rates (BERs)
Chaos communications
Multiple access (MA)
Noncoherent detection
Walsh codes
Issue Date: Sep-2004
Publisher: IEEE
Source: IEEE transactions on circuits and systems. I, Regular papers, Sept. 2004, v. 51, no. 9, p. 1868-1878.
Abstract: In this paper, a multiple access (MA) technique is proposed for chaos-based communication systems, in which chaotic reference signals are transmitted followed by the information-bearing signals. Chaotic reference signals modulated by a binary training sequence are sent periodically. The same chaotic signals are then modulated by the binary data and transmitted. To achieve MA, different chaotic signals and training sequences are assigned to different users. Two types of receivers are proposed. For the first one, an adaptive filter is employed which aims to reduce the inter-user interference. For the second receiver type, a simple inverse-and-average method is used in an attempt to recover the chaotic reference signal, which is then used to correlate with the information-bearing signals for determining the received symbols. The performance bounds of these two schemes are also derived. Finally, the bit error rates of the proposed system are simulated and compared.
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.
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Type: Journal/Magazine Article
DOI: 10.1109/TCSI.2004.834497
ISSN: 1057-7122
Appears in Collections:EIE Journal/Magazine Articles

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