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The European Physical Journal Special Topics

, Volume 226, Issue 15, pp 3287–3301 | Cite as

Mixing chaos modulations for secure communications in OFDM systems

Regular Article
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Part of the following topical collections:
  1. Challenges in the Analysis of Complex Systems: Prediction, Causality and Communication

Abstract

In this paper, we consider a novel chaotic OFDM communication scheme is to improve the physical layer security. By secure communication we refer to physical layer security that provides low probability of detection (LPD)/low probability of intercept (LPI) transmission. A mixture of chaotic modulation schemes is used to generate chaotically modulated symbols for each subcarrier of the OFDM transmitter. At the receiver, different demodulators are combined together for the different modulation schemes for enhanced security. Time domain, frequency domain and statistical randomness tests show that transmit signals are indistinguishable from background noise. BER performance comparison shows that the physical layer security of the proposed scheme comes with a slight performance degradation compared to conventional OFDM communication systems.

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Copyright information

© EDP Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of Electrical and Computer EngineeringUniversity of CalgaryCalgaryCanada

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