One analog STBC-DCSK transmission scheme not requiring channel state information

Pingping Chen, Lin Wang, Chung Ming Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

58 Citations (Scopus)

Abstract

Both the inherently wideband differential-chaos-shift-keying (DCSK) modulation and the space-time block code (STBC) are techniques that can mitigate the effect of multipath fading. By applying STBC at the chaotic segment level, a novel analog STBC-DCSK scheme is proposed in this paper. The proposed scheme is a simple configuration that combines the advantages of STBC and chaotic modulation. Due to the very low correlation between different analog chaotic signals, the proposed scheme can remarkably suppress the inter-transmit-antenna interference so as to recover the desired information and to achieve the full diversity gain. The theoretical bit-error-rate (BER) performance and the highly consistent simulation results demonstrate that the STBC-DCSK scheme outperforms the conventional single-input-single-output (SISO)-DCSK scheme by about 5 dB at a BER of 10-4. The performance superiority of the proposed scheme is further demonstrated in a typical UWB channel by simulations. More importantly, the proposed scheme maintains the same low transceiver cost as the SISO-DCSK scheme. Consequently, this proposed scheme is a low-cost alternative for wireless local area network (WLAN) applications.
Original languageEnglish
Article number6482240
Pages (from-to)1027-1037
Number of pages11
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume60
Issue number4
DOIs
Publication statusPublished - 26 Mar 2013

Keywords

  • Differential chaos shift keying (DCSK)
  • space-time block code (STBC)
  • STBC-DCSK
  • ultra-wideband (UWB)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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