ABSTRACT
Chaotic chaos communication schemes typically compete with traditional spread spectrum techniques and have been pursued for a number of reasons, among which there is the simplicity of generating non-repeating sequences and easily achieved delta-like autocorrelation properties. Consequently, a good chaos based scheme's performance characteristic needs to possess a good scaling behavior with respect to the symbol length, that is, allows the tradeoff between length and target signal to noise ratio. Filtering in such a case distorts also the signal of interest, and on the other hand, the coinciding spectra of noise and chaos make it impossible to distinguish the two spectrally. Concentrating primarily on noise reduction, direct methods for detecting digital information in transmissions using chaos have not been considered. The correct use of noise reduction increases the performance of classical receivers that were proposed for communication systems based on chaos, as their equivalent counterparts in traditional communication schemes.
