Secure transmission of information by digital chaotic signals

González Marcos, Ana and Martín Pereda, José Antonio (2004). Secure transmission of information by digital chaotic signals. In: "Advanced Free-Space Optical Communications Techniques and Technologies", 25/10/2004, London, UK.

Description

Title: Secure transmission of information by digital chaotic signals
Author/s:
  • González Marcos, Ana
  • Martín Pereda, José Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: Advanced Free-Space Optical Communications Techniques and Technologies
Event Dates: 25/10/2004
Event Location: London, UK
Title of Book: Proceedings of SPIE
Date: 8 December 2004
Volume: 5614
Subjects:
Freetext Keywords: Amplifiers ; Chaos ; Logic ; Optical communications ; Optical computing ; Receivers ; Semiconductor lasers ; Telecommunications
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Fotónica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Protecting signals is one of the main tasks in information transmission. A large number of different methods have been employed since many centuries ago. Most of them have been based on the use of certain signal added to the original one. When the composed signal is received, if the added signal is known, the initial information may be obtained. The main problem is the type of masking signal employed. One possibility is the use of chaotic signals, but they have a first strong limitation: the need to synchronize emitter and receiver. Optical communications systems, based on chaotic signals, have been proposed in a large number of papers. Moreover, because most of the communication systems are digital and conventional chaos generators are analogue, a conversion analogue-digital is needed. In this paper we will report a new system where the digital chaos is obtained from an optically programmable logic structure. This structure has been employed by the authors in optical computing and some previous results in chaotic signals have been reported. The main advantage of this new system is that an analogue-digital conversion is not needed. Previous works by the authors employed Self-Electrooptical Effect Devices but in this case more conventional structures, as semiconductor laser amplifiers, have been employed. The way to analyze the characteristics of digital chaotic signals will be reported as well as the method to synchronize the chaos generators located in the emitter and in the receiver.

More information

Item ID: 22833
DC Identifier: http://oa.upm.es/22833/
OAI Identifier: oai:oa.upm.es:22833
Official URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=852864
Deposited by: Biblioteca ETSI Telecomunicación
Deposited on: 11 Mar 2014 07:37
Last Modified: 21 Apr 2016 20:33
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