Performance Analysis of a Chaos-Based Multi-User Communication System Implemented in DSP Technology

Simic, L; Berber, SM

Performance Analysis of a Chaos-Based Multi-User Communication System Implemented in DSP Technology

Simic, L Berber, SM

Permalink

Publication Type:: Conference
Issue Date:: 2007-03-12T22:05:32Z

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download 104_Simic.pdfAdobe PDF (145.42 kB)

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Simic, L	en_AU
dc.contributor.author	Berber, SM	en_AU
dc.date.accessioned	2007-03-12T22:05:32Z
dc.date.accessioned	2012-12-15T02:29:41Z
dc.date.available	2007-03-12T22:05:32Z
dc.date.available	2012-12-15T02:29:41Z
dc.date.issued	2007-03-12T22:05:32Z
dc.identifier.uri	http://hdl.handle.net/10453/19644
dc.description.abstract	This paper presents the implementation of a multi-user chaos-based communication system in DSP. The system is based on the chaotic phase shift keying (CPSK) digital modulation scheme, where chaotic signals are used as the spreading sequences of a CDMA system. Using chaotic signals offers the advantages of increased security and higher system capacity compared with conventional sequences. The aim of this hardware implementation was to enable a comparison against analytical performance results for CPSK. The transceiver prototype was implemented on a 32-bit floating-point TigerSHARC DSP. Its bit error rate (BER) characteristics were measured in the presence of additive white Gaussian noise. The prototype achieves excellent BER performance, matching that of theoretical CPSK. The effects of the limited number precision of the hardware platform are thus negligible. However, due to the limited concurrency of DSP, the multi-user system only supports low data rates.	en_AU
dc.format.extent	148912 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en_AU
dc.relation.replaces	http://hdl.handle.net/2100/80
dc.title	Performance Analysis of a Chaos-Based Multi-User Communication System Implemented in DSP Technology	en_AU
dc.type	Conference
utslib.copyright.status	open_access

Abstract:

This paper presents the implementation of a multi-user chaos-based communication system in DSP. The system is based on the chaotic phase shift keying (CPSK) digital modulation scheme, where chaotic signals are used as the spreading sequences of a CDMA system. Using chaotic signals offers the advantages of increased security and higher system capacity compared with conventional sequences. The aim of this hardware implementation was to enable a comparison against analytical performance results for CPSK. The transceiver prototype was implemented on a 32-bit floating-point TigerSHARC DSP. Its bit error rate (BER) characteristics were measured in the presence of additive white Gaussian noise. The prototype achieves excellent BER performance, matching that of theoretical CPSK. The effects of the limited number precision of the hardware platform are thus negligible. However, due to the limited concurrency of DSP, the multi-user system only supports low data rates.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/19644