Title :
A chaotic system that communicates through unlimited propagation losses and/or transmitter gain
Author :
Fleming-Dahl, Arthur
Author_Institution :
Southwest Res. Inst., San Antonio, TX, USA
Abstract :
A noise-like appearance and sensitive dependence on initial conditions render communications based on chaos secure. The sensitivity of chaotic processes to amplitude variations, however, presents synchronization problems that historically have severely limited communications distances. A chaotic communications system is presented that detects, and corrects for signal levels that deviate from the receiver optimal design values. It operates successfully with unlimited transmitter amplification and/or propagation losses, in the presence of noise. The system is described, and results shown for 80 dB loss through 20 dB gain without encountering algorithmic limits, in conjunction with 40 dB signal-to noise ratio (SNR) through 0 dB SNR
Keywords :
Gaussian noise; amplification; chaos; error statistics; losses; modulation; receivers; signal restoration; telecommunication security; transmitters; BER; Gaussian noise; SNR; amplitude variations; bit error rate; chaotic communications system; chaotic process sensitivity; communications distance; modulation; noise-like appearance; receiver estimation engine design; secure communications; signal amplitude restorer; signal levels; signal restoration algorithm; signal-to noise ratio; synchronization problems; system performance; transmitter gain; unlimited propagation losses; unlimited transmitter amplification; Chaotic communication; Gain; Gaussian noise; Inspection; Local oscillators; Noise generators; Propagation losses; Signal design; Signal to noise ratio; Transmitters;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853606
