Chaotic complex spreading sequences for asynchronous ds-cdma-part ii: some theoretical performance bounds

Riccardo Rovatti, Gianluca Setti, Gianluca Mazzini

Research output: Contribution to journalArticlepeer-review

135 Scopus citations


This paper and its companion (Part I) are devoted to the evaluation of the impact of chaos-based techniques on communications systems with asynchronous Code Division Multiple Access. In Part I, a performance index was introduced and exploited to a priori estimate the performance of DS-CDMA communications systems based on chaotic spreading sequences, and to compare it to that of conventional systems. Here, tools from nonlinear dynamical system theory are employed to give a formal ground for those results. Analytical bounds on the expected partial cross correlation between spreading sequences obtained by quantizing and repeating a chaotic time series are derived, ensuring general applicability of such a technique in a real environment. Further analytical arguments guarantee that, when particular chaotic generators are used, expected performance is not worse than that of a well-behaving communications system. This analysis ensures also that, unlike conventional sequences, chaotic spreading codes can be generated for any number of users and allocated bandwidth. © 1998 IEEE.
Original languageEnglish (US)
Pages (from-to)496-506
Number of pages11
JournalIEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
Issue number4
StatePublished - Dec 1 1998
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-15

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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