An improved multiple access chaotic communication system using orthogonal chaotic vectors

Author

Venkatesh, S. ; Singh, Poonam

Author_Institution

Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Rourkela, India

fYear

2011

fDate

10-12 Feb. 2011

Firstpage

80

Lastpage

82

Abstract

The small yet non-zero cross-correlation between chaotic spreading sequences in multi user chaotic communication system leads to MAI. The effect of MAI increases as the number of users increases. In order to eliminate the effect of MAI we propose the use of Orthogonal Chaotic Vectors (OCV) as spreading sequences to modulate the message data. At the receiver a simple correlator type detector is used. Analytical expressions for BER are derived for both AWGN and fading channels are compared with that of simulation results.

Keywords

AWGN channels; chaotic communication; error statistics; fading channels; interference suppression; multi-access systems; radiofrequency interference; sequences; AWGN channels; BER; MAI effect elimination; chaotic spreading sequences; correlator type detector; fading channels; improved multiple access chaotic communication system; multiple access interference suppression; multiuser chaotic communication system; nonzero cross-correlation; orthogonal chaotic vectors; AWGN; Chaotic communication; Coherence; AWGN; chaos; fading channels; gram-schimdt orthonormalisation; orthogonal chaotic vector (OCV); orthogonal chaotic vector shift keying (OCVSK);

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Signal Processing (ICCSP), 2011 International Conference on

Conference_Location

Kerala

Print_ISBN

978-1-4244-9798-0

Type

conf

DOI

10.1109/ICCSP.2011.5739404

Filename

5739404