Joint Carrier-Code Index Modulation Aided M-ary Differential Chaos Shift Keying System

Xiangming Cai, Weikai Xu, Francis C.M. Lau, Lin Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A joint carrier-code index modulation aided M-ary differential chaos shift keying (JCCIM-MDCSK) system is proposed in this paper. In the proposed JCCIM-MDCSK system, the carrier and code indices are used to transmit extra carrier and code index bits, respectively. Moreover, the modulating bits are input to multiple M-ary DCSK modulators, and the resultant signals are transmitted by the selected spreading codes and loaded into the active carriers. The benefit of the joint carrier-code index modulation is fully exploited so that the data rate and bit-error-rate (BER) performance of the JCCIM-MDCSK system is enhanced in contrast to its competitors. In order to estimate the carrier and code index bits successfully, an effective joint carrier-code index detection algorithm is proposed for the JCCIM-MDCSK system. In addition, we derive the theoretical BER expressions of JCCIM-MDCSK system over additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels. Finally, the BER performance of JCCIM-MDCSK system is compared to other state-of-the-art IM-based non-coherent chaotic communication systems. It is shown that the JCCIM-MDCSK system can achieve better BER performance than its competitors.

Original languageEnglish
JournalIEEE Transactions on Vehicular Technology
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • bit error rate (BER)
  • Chaotic communication
  • differential chaos shift keying (DCSK)
  • joint carrier-code index modulation

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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