Message encoding and decoding through chaos modulation in chaotic optical communications

Author

Tang, S. ; Chen, H.F. ; Hwang, S.K. ; Liu, J.M.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

49

Issue

2

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

163

Lastpage

169

Abstract

Chaos modulation for message encoding and decoding is investigated using two chaotic optical communication systems. With a message injected into the chaotic dynamics of the transmitter in chaos modulation, the complexity of the chaos is found to increase. Meanwhile, the synchronization quality is not influenced by the message encoding. The effect of channel noise is investigated and the bit error rate is calculated as a function of the signal-to-noise ratio for both systems

Keywords

bifurcation; chaos generators; cryptography; decoding; modulation coding; optical communication; optical feedback; synchronisation; telecommunication security; bit error rate; channel noise effect; chaos modulation; chaotic dynamics; chaotic optical communications; complexity; correlation dimension; delayed optoelectronic feedback system; message decoding; message encoding; optical injection system; period-doubling route; quasi-periodicity; secure communications; semiconductor lasers; signal-to-noise ratio; synchronization quality; Bit error rate; Chaotic communication; Decoding; Encoding; Optical feedback; Optical fiber communication; Optical modulation; Optical noise; Optical transmitters; Signal to noise ratio;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.983864

Filename

983864