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Long spatiotemporal chaotic sequences for DS-UWB systems

Abstract : In this study, we address the effect of spreading sequences on the performance of asynchronous direct-sequence (DS) ultra-wideband (UWB) systems. We consider the two cases of short and long sequences in a multipath environment. In particular, we propose the use of sequences generated with a family of spatiotemporal chaotic systems, namely Piecewise Coupled Map Lattices (PCML), as spreading sequences. Such sequences are shown to reduce the MUI variance with regard to i.i.d. and Gold sets for both short and long sequences. Furthermore, simulation results show that the use of long PCML codes improves the average bit error rate (BER) of the system, which hence can accomodate more active users.
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https://hal-supelec.archives-ouvertes.fr/hal-00561630
Contributor : Sylvie Marcos <>
Submitted on : Tuesday, February 1, 2011 - 3:37:23 PM
Last modification on : Wednesday, September 16, 2020 - 4:43:55 PM

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  • HAL Id : hal-00561630, version 1

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Ali Kotti, Soumaya Meherzi, Sylvie Marcos, Safya Belghith. Long spatiotemporal chaotic sequences for DS-UWB systems. EUSIPCO 2010, Aug 2010, Aalborg, Denmark. pp.1404-1408. ⟨hal-00561630⟩

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