Differential Permutation Index DCSK Modulation for Chaotic Communication System

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)2029-2033
Journal / PublicationIEEE Communications Letters
Issue number6
Online published24 Feb 2021
Publication statusPublished - Jun 2021


This paper proposes a differential permutation index differential chaos shift keying (DPI-DCSK) modulation for wireless communications. The conventional PI-DCSK has the disadvantage of wasting transmission energy and the loss of system performance. In M-ary DPI-DCSK, one chaotic sequence to be sent represents current modulated M-ary symobl as well as the reference of next modulation symbol in a data frame, which can fully utilize the transmission energy with the same hardware implementation as PI-DCSK. The bit error performance of the proposed DPI-DCSK over the multipath Rayleigh fading channel is theoretically analyzed. The simulation results show that the proposed DPI-DCSK achieves a performance gain of more than 3 dB over PI-DCSK, especially in high-delay multipath fading channels. The performance advantage of the proposed scheme is also illustrated in practical ultra-wideband (UWB) channels. Thus, DPI-DCSK is an efficient alternative transmission scheme for chaos-based wireless communication, such as indoor applications of transmitted-reference UWB communications.

Research Area(s)

  • bit error rate (BER), Chaotic communication, Differential permutation index differential chaos shift keying (DPI-DCSK), Distributed Bragg reflectors, Fading channels, Indexes, M-ary, Modulation, Receivers, Signal to noise ratio