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A Chaos-Based Secure Direct-Sequence/Spread-Spectrum Communication System

Abstract and Applied Analysis, 2013-01, Vol.2013, p.1-11 [Peer Reviewed Journal]

Copyright © 2013 Nguyen Xuan Quyen et al. ;COPYRIGHT 2013 Hindawi Limited ;Copyright © 2013 Nguyen Xuan Quyen et al. Nguyen Xuan Quyen et al. 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. ;Copyright 2012 Hindawi Publishing Corporation ;ISSN: 1085-3375 ;EISSN: 1687-0409 ;DOI: 10.1155/2013/764341

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  • Title:
    A Chaos-Based Secure Direct-Sequence/Spread-Spectrum Communication System
  • Author: Xuan Quyen, Nguyen ; Van Yem, Vu ; Manh Hoang, Thang
  • Stamova, Ivanka
  • Subjects: Chaos theory ; Communication ; Communication systems ; Computer information security ; Engineering research ; Feasibility ; Gaussian ; Mathematical research ; Mobile communication systems ; Pseudonoise ; Receivers ; Sequences (Mathematics) ; Simulation ; Studies ; Wireless communication systems
  • Is Part Of: Abstract and Applied Analysis, 2013-01, Vol.2013, p.1-11
  • Description: This paper proposes a chaos-based secure direct-sequence/spread-spectrum (DS/SS) communication system which is based on a novel combination of the conventional DS/SS and chaos techniques. In the proposed system, bit duration is varied according to a chaotic behavior but is always equal to a multiple of the fixed chip duration in the communication process. Data bits with variable duration are spectrum-spread by multiplying directly with a pseudonoise (PN) sequence and then modulated onto a sinusoidal carrier by means of binary phase-shift keying (BPSK). To recover exactly the data bits, the receiver needs an identical regeneration of not only the PN sequence but also the chaotic behavior, and hence data security is improved significantly. Structure and operation of the proposed system are analyzed in detail. Theoretical evaluation of bit-error rate (BER) performance in presence of additive white Gaussian noise (AWGN) is provided. Parameter choice for different cases of simulation is also considered. Simulation and theoretical results are shown to verify the reliability and feasibility of the proposed system. Security of the proposed system is also discussed.
  • Publisher: New York: Hindawi Limiteds
  • Language: English
  • Identifier: ISSN: 1085-3375
    EISSN: 1687-0409
    DOI: 10.1155/2013/764341
  • Source: ProQuest Central
    DOAJ Directory of Open Access Journals
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