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Appl. Sci. 2018, 8(2), 162; https://doi.org/10.3390/app8020162

Chaos-Based Underwater Communication With Arbitrary Transducers and Bandwidth

1
Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing, Xi’an University of Technology, Xi’an 710048, China
2
Institute for Complex System and Mathematical Biology, SUPA, University of Aberdeen, Aberdeen AB24 3UE, UK
*
Author to whom correspondence should be addressed.
Received: 30 October 2017 / Revised: 8 January 2018 / Accepted: 18 January 2018 / Published: 24 January 2018
(This article belongs to the Special Issue Underwater Acoustics, Communications and Information Processing)
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Abstract

In this work, an enhanced differential chaos shift keying (DCSK), based on a first order hybrid chaotic system, is being proposed for a high reliability underwater acoustic communication system. It can be integrated into systems that use standard existing transducers. We show that a coherent operation between the received signal and the time reversal of the basis function in a first order hybrid chaotic system maximizes the signal to noise ratio at the receiver. Concurrently, DCSK configuration is used to resist the distortion caused by the complex underwater acoustic channel. Our simulation results show that the proposed method has lower bit error rate (BER). In addition, it shows higher communication reliability over underwater acoustic channel as compared to the conventional DCSK using logistic map and its variant forms such as Correlation Delay Shift Keying (CDSK), Phase-Separate DCSK (PS-DCSK), High Efficiency DCSK (HE-DCSK), and Reference Modulated DCSK (RM-DCSK). View Full-Text
Keywords: first order hybrid system; communicating with chaos; DCSK; underwater acoustic communication first order hybrid system; communicating with chaos; DCSK; underwater acoustic communication
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Bai, C.; Ren, H.-P.; Grebogi, C.; Baptista, M.S. Chaos-Based Underwater Communication With Arbitrary Transducers and Bandwidth. Appl. Sci. 2018, 8, 162.

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