CORDIS Archive

Esprit Project 31103 - INSPECT
Open LTR - 2^nd phase (1^st phase see project 21103)
Innovative Signal Processing Exploiting Chaotic Dynamics

Keywords: chaos communications, digital signatures

Project home page:

http://vdp.ucd.ie/research/INSPECT.html

The aim of this project is to develop chaotic nonlinear dynamical solutions for applications in digital communications and signal processing which is competitive with current technology in terms of simplicity, cost-effectiveness, and design flexibility.

The objectives of the project are:

• to develop chaotic spreading codes for code-division multiple access (CDMA) communication systems,
• to determine performance limits for chaotic modulation schemes,
• to demonstrate the viability of chaotic communications,
• to improve the performance of chaotic communication by exploiting deterministic properties of chaotic signals,
• to improve the performance of digital watermarking by exploiting chaotic dynamics and to develop new techniques for still images/audio.

The performance of chaotic modulation, spreading and watermarking will be evaluated quantitatively, comparing the state-of-the-art in nonlinear dynamical systems research with conventional techniques in each application domain. The relative advantages and disadvantages of the proposed solutions will be identified and documented. Prototype hardware and software systems will be developed to demonstrate proof-of-concept and to facilitate technology transfer to industry.

The expected results are:

• The performance of digital communication techniques using chaos will be evaluated using standard communication system performance measures.
• The merits and limitations of the technology will be identified.
• The advantages of chaotic codes in CDMA systems will be quantified.
• The optimum performance of the Differential Chaos Shift Keying (DCSK) modulation scheme will be determined.
• Prototype integrated circuits will be deigned and realised that are necessary to implement the DCSK modulator and demodulator subsystems.
• A prototype DCSK radio communications system will be constructed and characterised.

A second objective of the project is to exploit chaos in digital watermarking. Theoretical studies towards performance improvements against attacks will be performed. Human perceptual characteristics will be employed. Modification and improvement of existing techniques will be done. The results will be integrated into prototypes/demos.

The progress of the project towards commercialisation will be guided by the Industrial Advisory board. An active dissemination policy will be adopted through scientific publications and workshops.

The development of chaotic codes and a DCSK communication system within INSPECT will produce software and hardware prototypes and reports detailing the theoretical and experimental performance of chaos in digital communications. These definitive results, and the associated simulators and design rules, which are not available on the world market, will give European manufacturers of telecommunications equipment a lead in incorporating this technology into their products.

Contact Point
Dr. Michael Peter Kennedy
Univ. College Dublin
Department of Electronic and Electrical Engineering
IRL - Dublin 4
e-mail: Peter.Kennedy@ucd.ie

tel: +353 / 1 706 19 63
fax: +353 / 1 283 09 21

Start date:1 September 98
Duration: 24 months

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This document is located at /esprit/src/31103.htm
It was last updated on 12 July 1999, and is maintained by carla.moris@dg13.cec.be