In this paper, we propose and demonstrate experimentally a new wireless digital encryption hyperchaotic communication system based on radio frequency (RF) communication protocols for secure real-time data or image transmission. A reconfigurable hardware architecture is developed to ensure the interconnection between two field programmable gate array development platforms through XBee RF modules. To ensure the synchronization and encryption of data between the transmitter and the receiver, a feedback masking hyperchaotic synchronization technique based on a dynamic feedback modulation has been implemented to digitally synchronize the encrypter hyperchaotic systems. The obtained experimental results show the relevance of the idea of combining XBee (Zigbee or Wireless Fidelity) protocol, known for its high noise immunity, to secure hyperchaotic communications. In fact, we have recovered the information data or image correctly after real-time encrypted data or image transmission tests at a maximum distance (indoor range) of more than 30 m and with maximum digital modulation rate of 625,000 baud allowing a wireless encrypted video transmission rate of 25 images per second with a spatial resolution of 128 × 128 pixels. The obtained performance of the communication system is suitable for secure data or image transmissions in wireless sensor networks.

/pdf/design-and-fpga-implementation-of-a-wireless-hyperchaotic-4edqkxi2v1.pdf

Design and FPGA implementation of a wireless hyperchaotic communication system for secure real-time image transmission

https://www.lcs.poli.usp.br/~marcio/Papers/Eisencraft2012.pdf

Chaos-based communication systems in non-ideal channels

Correlation and spectral properties of chaotic signals generated by a piecewise-linear map with multiple segments

An interesting and original solution to the high channel noise sensibility problem of digital chaotic communications is proposed. The solution idea consist of avoiding disruption of the slave/receiver dynamics by injecting the driving signal. To realize experimentally this pertinent idea, an FPGA-based hardware architecture is developed, flrstly to trigger the generation of the slave/receiver chaotic dynamics at each received data detection, and secondly to synchronize the driving signal with the slave generated chaotic signal for the demodulation operation. We have tested and validated the proposed solution through experimental realization of a wireless hyperchaotic communication system based on ZigBee communication protocol. Real-time results of experimental wireless communication tests are presented. The obtained results show the efiectiveness and the robustness of the proposed solution against real channel noise in digital chaotic

/pdf/first-experimental-solution-for-channel-noise-sensibility-in-pjii2sm93n.pdf

First Experimental Solution for Channel Noise Sensibility in Digital Chaotic Communications

On the Performance of a Digital Chaos-Based Communication System in Noisy Channels

https://www.lcs.poli.usp.br/~marcio/Papers/Eisencraft2011a.pdf

A. M. Batista

Papers

Fast communication: Discrete-time chaotic systems synchronization performance under additive noise