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Promising performance of a frequency-modulated differential chaos shift keying ultra-wideband system under indoor environments

Promising performance of a frequency-modulated differential chaos shift keying ultra-wideband system under indoor environments

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  • Author(s): X. Min 1 ; W. Xu 1 ; L. Wang 1 ; G. Chen 2
    • View affiliations
    • Affiliations: 1: Department of Communication Engineering, Xiamen University, Fujian, People's Republic of China
      2: Department of Electronic Engineering, City University of Hong Kong, Hong Kong SAR, People's Republic of China
  • Source: Volume 4, Issue 2, 22 January 2010, p. 125 – 134
    DOI:  10.1049/iet-com.2008.0658 , Print ISSN 1751-8628, Online ISSN 1751-8636
© The Institution of Engineering and Technology
Published

In this study, the performance of the frequency-modulated differential chaos shift keying (FM-DCSK) ultra-wideband (UWB) system is evaluated through two important system parameters, the guard interval and the integration interval of the integrator, over indoor communication channels. It is found that the existing FM-DCSK UWB system suffers severe performance degradation in the IEEE 802.15.4a low-rate application. To resolve this problem, a new optimising scheme for the integration interval is presented. Simulation results show that the performance of the proposed scheme is significantly improved and becomes insensitive to the data rate. In addition, some notable advantages are evident in the proposed system, such as moderate multiple-access capability and feasible cross-layer optimisation.

Inspec keywords: personal area networks; chaotic communication; telecommunication standards; indoor radio; frequency shift keying; ultra wideband communication

Other keywords: IEEE 802.15.4a; cross-layer optimisation; indoor communication channels; integration interval; wireless personal area networks; frequency-modulated differential chaos shift keying; guard interval; ultra-wideband system; multiple-access capability

Subjects: Radio links and equipment; Modulation and coding methods

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