Computer Science – Performance
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..622..217a&link_type=abstract
EXPERIMENTAL CHAOS: 6th Experimental Chaos Conference, Proceedings of a conference held in Potsdam, Germany, 22-25 July 2001. Ed
Computer Science
Performance
Chaos, Code Division Multiple Access, Communication Equipment, Nonlinear Systems, Pulse Communication, Signal Processing, Spread Spectrum Transmission, Communication Using Chaos
Scientific paper
Recent theoretical investigations concern the application of chaos to DS-CDMA system. The optimum spreading sequences have been analytically characterized to find that they can be generated with negligible approximation by a discrete-time chaotic system. The adoption of these chaos-based spreading sequences can be theoretically anticipated to produce a zero-cost average 15% increase in the number of allocable users or a 15% increase in the signal-to-interference ratio controlling the communication quality. We here confirm theoretical predictions by building a DSP-based prototype system comprising 7 transmitters and a receiver matched with one of the transmitters. It is worthwhile to be noticed, that, although still preliminary, these are the first presented experimental results confirming that the adoption of chaos-based techniques allows to improve the performance of a communication system with respect to currently adopted techniques.
Agnelli F.
Mazzini G.
Rovatti Riccardo
Setti Giancarlo
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