Computer Science
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.592m&link_type=abstract
IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,
Computer Science
Scientific paper
Recently, many works have pointed out to the fact that the complexity inherent in the dynamics of chaotic systems can be advantageously used to implement digital communication systems. Digital information is encoded in large-scale features of the waveform by use of small perturbations to control the symbolic dynamics. Chaotic oscillations cover a wide spectral domain and can efficiently mask an information signal scrambled by the chaotic encoder. However, the wide spectrum poses intrinsic difficulties in the decoding process if the codified chaotic signal is transmitted over real communication channels with limited bandwidth. We address this problem both numerically and experimentally, and we propose an approaches to improve chaotic communication over band-limited and noisy channels. We use adaptive compensation and as a result we improve the robustness of the chaotic communication both to noise and bandwidth channel limitations. Our results show that chaotic communication concept is a convenient approach to be exploited to efficiently transmit large amount of date with a good level of security, which make this concept as a good option to be used for the next generation communication satellites.
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