Performance analysis of differential chaotic shift keying communications in MIMO systems

Author

Kaddoum, Georges ; Vu, Mai ; Gagnon, Francois

Author_Institution

LACIME Lab., Ecole de Technol. Super., Montreal, QC, Canada

fYear

2011

fDate

15-18 May 2011

Firstpage

1580

Lastpage

1583

Abstract

This paper analyzes the performance of chaotic communications in a MIMO system. The robustness of chaos-based communications systems makes Differential Chaos Shift Keying (DCSK) the preferred modulation choice. In order to improve the performance of such a system, the Alamouti space-time code is used for 2 transmit and 2 receive antennas. A new approach for computing the bit-error-rate (BER) performance is provided, and an analytical BER expression is derived. The approach used explores the dynamic properties of chaotic sequences and takes into account the fact that the bit energy varies from one transmitted bit to the next. Simulation results confirm the accuracy of this approach.

Keywords

MIMO communication; chaos; error statistics; phase shift keying; space-time codes; Alamouti space-time code; BER expression; DCSK; MIMO systems; bit-error-rate performance; chaotic shift keying communications; differential chaos shift keying; performance analysis; Bit error rate; Chaotic communication; Communication systems; Gaussian approximation; Histograms; Receiving antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2011 IEEE International Symposium on

Conference_Location

Rio de Janeiro

ISSN

0271-4302

Print_ISBN

978-1-4244-9473-6

Electronic_ISBN

0271-4302

Type

conf

DOI

10.1109/ISCAS.2011.5937879

Filename

5937879