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Title: Performance of chaos-based communication systems under the influence of coexisting conventional spread-spectrum systems
Authors: Lau, Francis Chung-ming
Tse, C. K. Michael
Subjects: Chaos communication
Chaos shift keying (CSK)
Differential chaos shift keying (DCSK)
Differential sequence spread spectrum
Issue Date: Nov-2003
Publisher: IEEE
Source: IEEE transactions on circuits and systems. I, Fundamental theory and applications, Nov. 2003, v. 50, no. 11, p. 1475-1481.
Abstract: This brief studies the performance of selected chaos-based systems which share their frequency bands with conventional spread-spectrum systems. Such a scenario may occur in normal practice when chaos-based systems are introduced while the conventional systems are still in operation. The particular chaos-based systems under study are the coherent chaos-shift-keying system and the noncoherent differential chaos-shift-keying system, and the coexisting conventional system employs the standard direct-sequence spread-spectrum modulation scheme. Analytical expressions for the bit-error rates are derived in terms of system parameters such as spreading factor, chaotic signal power, conventional spread-spectrum signal power, and noise power spectral density. Finally, computer simulations are performed to verify the analytical findings.
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Type: Journal/Magazine Article
DOI: 10.1109/TCSI.2003.818619
ISSN: 1057-7122
Appears in Collections:EIE Journal/Magazine Articles

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