| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Sao Paulo, Telecommun & Control Engn Dept, Escola Politecn, BR-05508 Sao Paulo - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION; v. 37, p. 374-385, AUG 2016. |
| Web of Science Citations: | 14 |
| Abstract | |
In recent years, many communication systems that use a function to encode an information in a chaotic signal were proposed. Since every transmission channel is bandlimited in nature, it is required to determine and to control the chaotic signal spectrum. This way, a bandlimited chaos-based communication system (CBCS) was proposed using digital filters and chaotic synchronization. As the filters modify the original chaotic system, it is necessary to study how their insertion affects chaotic synchronization. In this work, we present a digital discrete-time bandlimited CBCS system analysis, considering practical settings encountered in conventional communication systems. The proposed system is based on master-slave chaotic synchronization and the required conditions for its synchronization is obtained analytically for a general K-dimensional chaos generator map. The performance of this system is evaluated in terms of bit error rate. As a way to improve the signal to noise ratio, we also propose to filter the out-of-band noise in the receiver. Numerical simulations show the advantages of using such a scheme. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 14/04864-2 - Spectral analysis of chaotic signals with applications in communications |
| Grantee: | Marcio Eisencraft |
| Support Opportunities: | Regular Research Grants |