Enhancing Chaotic Communication Performances by Manchester Coding

Author

Ursini, Leonora ; Santagiustina, Marco ; Annovazzi-Lodi, Valerio

Author_Institution

Padua Univ., Padua

Volume

20

Issue

6

fYear

2008

fDate

3/15/2008 12:00:00 AM

Firstpage

401

Lastpage

403

Abstract

A numerical analysis of an optical chaotic transmission system, based on the synchronization of two chaotic lasers, in a master-slave closed loop configuration is presented. At the transmitter, the master chaotic wave is superposed on the information message; at the receiver, the message is recovered by subtracting the synchronized slave chaotic wave from the received signal. The performances are analyzed in terms of the Q-factor, considering two different message modulation formats: the nonreturn-to-zero and the Manchester coding. The Manchester coding shows enhanced performances due to the shift of the signal spectrum to higher frequencies.

Keywords

Q-factor; chaotic communication; encoding; optical chaos; optical receivers; optical transmitters; spectral line shift; synchronisation; Manchester coding; Q -factor; chaotic communication; chaotic lasers; encryption; master chaotic wave; master-slave closed loop configuration; modulation formats; nonreturn-to-zero coding; optical chaotic transmission; receiver; signal spectrum; slave chaotic wave; synchronization; transmitter; Amplitude modulation; Chaotic communication; Frequency synchronization; Laser theory; Optical feedback; Optical filters; Optical modulation; Optical receivers; Optical transmitters; Pump lasers; $Q$-factor; Chaos; Manchester code; encryption; synchronization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.916918

Filename

4451196