A subspace theory for differential chaos-shift keying

Author

Salberg, Arnt-BØrre ; Hanssen, Alfred

Author_Institution

Inst. of Marine Res., Tromso

Volume

53

Issue

1

fYear

2006

Firstpage

51

Lastpage

55

Abstract

In this brief, we introduce a subspace theory for differential chaos-shift keying (DCSK) systems. We show that DCSK systems operate by transmission of chaotic signals residing in a low-dimensional subspace. The subspace formalism of DCSK schemes leads to the derivation of useful subspace detectors that can be applied to decode the DCSK signal for various types of channels. Closed form expressions for the bit error rate is derived for an M-ary FM-version of DCSK, under the assumption of orthogonal subspace generating vectors. Numerical simulations demonstrate that the proposed subspace detector in general outperforms the conventional correlation detector for DCSK

Keywords

chaotic communication; correlation methods; modulation; M-ary FM-version; bit error rate; chaotic signals; correlation detector; differential chaos-shift keying systems; low-dimensional subspace; orthogonal subspace generating vectors; subspace detectors; subspace theory; Bit error rate; Chaos; Chaotic communication; Decoding; Detectors; Frequency; Numerical simulation; Physics; Spread spectrum communication; Wideband; Differential chaos shift keying (DCSK); subspace detectors; subspace theory;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2005.854590

Filename

1576923