Implementation of Chaotic Codes Using Chebyshev-Map in OCDMA System of Access Networks

doi:10.13190/jbupt.200906.67.zhengzhh

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2009, Vol. 32 ›› Issue (6): 67-71.doi: 10.13190/jbupt.200906.67.zhengzhh

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Implementation of Chaotic Codes Using Chebyshev-Map in OCDMA System of Access Networks

ZHENG Zhi-hua;QIAN Zong-jue;SHOU Guo-chu;HU Yi-hong

(1.School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2.School of Mechanical and Electronic Engineering, North University of China, T
aiyuan 030051, China)

Received:2009-03-26 Revised:2009-09-09 Online:2009-12-28 Published:2009-12-28
Contact: ZHENG Zhi-Hua

Abstract

Abstract:

The structure of optical code division multiple access (OCDMA) system based on Chebyshev-map chaotic codes is investigated in passive optical networks. The system can support more subscribers by providing the different codes at same wavelength channel. The scheme on chaotic spread spectrum sequences using Chebyshev-map is presented, which is taken as subscriber address codes. The performance of this system is analyzed. The simulation results show that the chaotic sequences have good correlation properties, and restrain the influence of multiple access interference. The bit error rate performance of the proposed system is improved by about 1～3 orders of magnitude better than that of single OCDMA system, and obtains about 1 order of magnitude improvement relative to traditional optical orthogonal codes.

Key words: passive optical network, optical code division multiple access, chaotic sequence, Chebyshev-map

ZHENG Zhi-hua;QIAN Zong-jue;SHOU Guo-chu;HU Yi-hong. Implementation of Chaotic Codes Using Chebyshev-Map in OCDMA System of Access Networks[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2009, 32(6): 67-71.

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Implementation of Chaotic Codes Using Chebyshev-Map in OCDMA System of Access Networks

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