A novel differential Chaos Shift Keying modulation scheme

W. K. Xu, L. Wang, G. Kolumbán

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

In binary Differential Chaos Shift Keying (DCSK), the reference and information bearing chaotic wavelets are transmitted in two consecutive time slots. This TDMA approach provides two independent channels for the transmission of reference and information bearing wavelets but requires a delay component both in the modulator and demodulator circuits, furthermore, it halves the data attainable data rate. The wideband Radio Frequency (RF) delay lines at receiver are extremely difficult to implement with CMOS technology, therefore, the DCSK modulation cannot be exploited in many applications, such as ultra-wideband. To avoid the use of wideband RF delay lines at receiver, an alternative solution is proposed here where both the reference and information bearing wavelets are sent in the same time slot. The two wavelets are separated by Walsh codes instead of time delay. The new modulator and demodulator configurations are given, analytical expressions for the Bit Error Rate (BER) are derived and the derived BER expressions are verified by computer simulations over Additive White Gaussian Noise (AWGN) and multipath Rayleigh fading channels.

Original languageEnglish
Pages (from-to)799-814
Number of pages16
JournalInternational Journal of Bifurcation and Chaos in Applied Sciences and Engineering
Volume21
Issue number3
DOIs
Publication statusPublished - Mar 2011

Fingerprint

Bearings (structural)
Chaos theory
Chaos
Wavelets
Modulation
Demodulators
Electric delay lines
Delay Line
Bit error rate
Modulators
Modulator
Error Rate
Receiver
Time division multiple access
Rayleigh fading
Ultra-wideband (UWB)
Fading channels
Rayleigh Fading Channel
Time delay
Gaussian White Noise

Keywords

  • Bit Error Rate (BER)
  • Chaotic modulation
  • Code-Shifted DCSK (CS-DCSK)
  • delay line
  • multipath Rayleigh fading channel

ASJC Scopus subject areas

  • Applied Mathematics
  • General
  • Engineering(all)
  • Modelling and Simulation

Cite this

A novel differential Chaos Shift Keying modulation scheme. / Xu, W. K.; Wang, L.; Kolumbán, G.

In: International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, Vol. 21, No. 3, 03.2011, p. 799-814.

Research output: Contribution to journalArticle

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