| Título: | DSP Prototype of a Chaos-Based Multi-User Communication System: Design and Performance Analysis |
| Autores: |
Simic, Ljiljana; Department of Electrical and Computer Engineering, The University of Auckland Berber, Stevan; Department of Electrical and Computer Engineering, The University of Auckland |
| Fecha: | 2006-07-17 |
| Publicador: | African Journal Of Information & Communication Technology |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| Tema: | Code-division Multiple Access (CDMA), multi-user communication, chaos based PSK, DSP design |
| Descripción: | This paper presents the implementation of a multi-user chaos-based communication system in DSP (digital signal processor) technology. 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 (code division multiple access) 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. Despite this, the prototype demonstrates that the CPSK scheme is a promising and viable CDMA option for the future. |
| Idioma: | Inglés |
1 Aspects of Delay Diversity in OFDM por Bauch, Gerhard; DoCoMo Euro-Labs | 6 An Overview of Internet Measurements:Fundamentals, Techniques, and Trends por Ziviani, Artur |
2 UWB Electric and Magnetic Monopole Antennas por Chen, Xiaodong; Queen Mary, University of London, London E1 4NS,Liang, Jianxin,Li, Pengcheng,Chiau, Choo C. | 7 Contextualizing ICT in Africa: The Development of the CATI model in Tanzanian Higher Education por Vesisenaho, Mikko; Department of Computer Science, University of Joensuu, Finland,Kemppainen, Jyri; Tumaini University, Iringa University College, Tanzania,Islas, Carolina; Depertment of Computer Science, University of Joensuu, Finland,Tedre, Matti; Department of Computer Science, University of Joensuu, Finland,Sutinen, Erkki; Department of Computer Science, University of Joensuu, Finland |
3 "Scenario"-adaptivity for e-service management in heterogeneous networks por Iera, Antonio,Molinaro, Antonella,Pudano, Alfredo,Ursino, Domenico | 8 Considerations for the Design of UWB Antennas for Mobile and Consumer Equipment por Manteuffel, Dirk |
4 Generic Model and Architecture for Cooperating Objects in Sensor Network Environments por Marron, Pedro Jose; University of Stuttgart,Minder, Daniel; University of Stuttgart,Lachenmann, Andreas; University of Stuttgart,Saukh, Olga; University of Stuttgart,Rothermel, Kurt; University of Stuttgart | 9 A New Resource Management Scheme for Ad Hoc and Sensor Networks por de Renesse, Ronan,Friderikos, Vasilis,Aghvami, Hamid |
5 An Applicable GSM Network Model for Networking in Rural Environments por Li, Yang; University of Cape Town,Agbinya, Johnson I; University of Technology, Sydney,Chan, H Anthony; University of Cape Town | 10 Mobility Management, Quality of Service, and Security in the Design of Next Generation Wireless Network por Nursimloo, Deeya S,Chan, Anthony H |