Performance of DCSK in Multipath Environments: A Comparison with Systems Using Gold Sequences

Franco CHIARALUCE
Ennio GAMBI
Roberto GARELLO
Paola PIERLEONI

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E85-A    No.10    pp.2354-2363
Publication Date: 2002/10/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
chaotic communications,  spread-spectrum systems,  multipath propagation,  BER performance,  

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Summary: 
A performance comparison is developed between a chaotic communication system and a spread spectrum system with similar features in terms of bandwidth and transceiver structure but based on more conventional Gold sequences. Comparison is made in the presence of noise and multipath contributions which degrade the channel quality. It is shown that, because of its more favourable correlation properties, the chaotic scheme exhibits lower error rates, at a parity of the bandwidth expansion factor. The same favourable correlation properties are also used to explain and show, through a numerical example, the benefits of chaotic segments in a multi-user environment.