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Evaluation of a Continuous Valued Chaotic Spreader Used in a Chaotic Digital Code-Division Multiple Access ((CD)[sup 2]MA) System.
- Source :
-
International Journal of Bifurcation & Chaos in Applied Sciences & Engineering . Aug2000, Vol. 10 Issue 8, p1933. 18p. - Publication Year :
- 2000
-
Abstract
- This paper presents a possible realization of a (CD)²MA multiuser communication system. The state variables of two synchronized chaotic Chua's circuits are thereby used to generate identical continuous valued spreader sequences in the transmitter and the receiver. To create a higher degree of randomness in the signatures, the state variables are processed by a k-shift cypher. The performance to be expected for such a system as opposed to designs using binary spreaders can be estimated theoretically. For verification, extensive simulations were run that allow for a direct comparison of the chaotic spreader with a traditional binary Gold sequence or a sequence of continuous random numbers, respectively, in terms of the achievable bit error ratio for a given data rate and number of simultaneous users per channel. A brief description of the system and channel models implemented in the simulation program is provided. The simulation results are presented and discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CODE division multiple access
*CHAOS theory
Subjects
Details
- Language :
- English
- ISSN :
- 02181274
- Volume :
- 10
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- International Journal of Bifurcation & Chaos in Applied Sciences & Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 6618636
- Full Text :
- https://doi.org/10.1142/S0218127400001237