A Coded DCSK Modulation System Over Rayleigh Fading Channels

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

17 Scopus Citations
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Author(s)

  • Pingping Chen
  • Long Shi
  • Yi Fang
  • Guofa Cai
  • Lin Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)3930-3942
Journal / PublicationIEEE Transactions on Communications
Volume60
Issue number9
Online published16 Apr 2018
Publication statusPublished - Sep 2018

Abstract

Coded modulation (CM) is a bandwidth efficient framework to approach the capacity limit of the differential chaos shift keying (DCSK) systems. In this paper, we propose an M-ary DCSK system operated with coded modulation based on nonbinary protograph LDPC codes over Rayleigh fading channels. First, we investigate the performance of the proposed nonbinary channel coded DCSK (CM-DCSK) and bit-interleaved coded DCSK (BICM-DCSK). In particular, we show that CM-DCSK outperforms BICM-DCSK over Rayleigh fading channels in terms of capacity limit. Compared with BICM-DCSK, CM-DCSK can simplify the receiver structure, since it does not require turbo iteration between the noncoherent detector and channel decoder. Second, guided by the modified Extrinsic Information Transfer (EXIT) analysis, we put forth two new types of nonbinary protograph LDPC codes to approach the capacity limit of CM-DCSK. Both the EXIT analysis and simulation results demonstrate that the proposed protograph-coded CM-DCSK achieves a better error performance than BICM-DCSK even with iterative decoding. Furthermore, we show the performance superiority of nonbinary protograph coded CM-DCSK over a practical UWB channel. Hence, we conclude that this proposed scheme offers a good alternative for wireless local area network (WLAN) applications.

Research Area(s)

  • Chaotic communication, coded modulation, DCSK, Decoding, Detectors, Fading channels, Iterative decoding, Modulation, multipath Rayleigh fading channel, protograph-based LDPC codes, UWB

Citation Format(s)

A Coded DCSK Modulation System Over Rayleigh Fading Channels. / Chen, Pingping; Shi, Long; Fang, Yi; Cai, Guofa; Wang, Lin; Chen, Guanrong.

In: IEEE Transactions on Communications, Vol. 60, No. 9, 09.2018, p. 3930-3942.

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