2002•Unpublished venueRequires access

Orthogonal multicarrier techniques applied to direct sequence spread spectrum CDMA systems

Antoine Chouly, A. Brajal, Stéphan Jourdan

Abstract

We design a new scheme for DS-CDMA applications. The basic principle consists in applying orthogonal multicarrier transmission to DS spread spectrum systems. Several algorithms for estimating the equalizer coefficients are investigated in order to reduce the interuser interference due to multipath propagation and cross-correlation between the code sequences. The resulting system achieves high robustness against channel impairments and outperforms the conventional single-carrier DS-CDMA system.>

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Key concepts: Spread spectrum, Code division multiple access, Direct-sequence spread spectrum, Multipath propagation, Computer science, Robustness (evolution), Algorithm, Multipath interference