Toward sequences optimization for chaos-based asynchronous DS-CDMA systems

Riccardo Rovatti, Gianluca Setti, Gianluca Mazzini

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


A model to characterize the performance of asynchronous CDMA systems with multi-level spreading codes based on periodical repetition of quantized chaotic time series is presented. Some analytical tools for performance investigation are described which merge communication and non-linear dynamical systems theories. With the help of these analytical tools and of extensive optimization, some new one-dimensional chaotic systems are constructed which can be effectively used for sequence generation. As a result of these optimization effort, examples of chaos-based sequences outperforming the classical spreading sequences (maximum-length and Gold sequences) are reported. Performance gains up to 23% are obtained considering a realistic environment.
Original languageEnglish (US)
Pages (from-to)2174-2179
Number of pages6
JournalConference Record / IEEE Global Telecommunications Conference
StatePublished - Dec 1 1998
Externally publishedYes

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