| 用模拟退火算法筛选光码分多址混沌码字 |
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| 引用本文： | 尹霄丽,余重秀,张琦,忻向军,刘会师,张寅,时安琦.用模拟退火算法筛选光码分多址混沌码字[J].北京邮电大学学报,2011,34(1):60-63. |
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| 作者姓名： | 尹霄丽 余重秀 张琦 忻向军 刘会师 张寅 时安琦 |
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| 作者单位： | 北京邮电大学,电子工程学院,北京,100876;光通信与光电子学教育部重点实验室(北京邮电大学),北京,100876 |
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| 基金项目： | 国家自然科学基金项目（60977002,60977046） |
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| 摘 要： | 为了得到更优的光码分多址(OCDMA)系统的误码率(BER)特性，基于相移超结构光纤布拉格光栅编/解码器OCDMA系统的BER特性，提出了使用3阶Chebyshev混沌序列作为OCDMA系统的地址码，并利用模拟退火算法对码字进行了优选. 仿真结果表明，使用混沌序列的系统较使用Gold序列的系统具有更优的BER特性，新的码字优选方法有效.
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| 关 键 词： | 光码分多址 超结构光纤布拉格光栅 混沌序列 模拟退火算法 |
| 收稿时间： | 2010-04-09 |
| 修稿时间： | 2010-09-03 |
Selecting of Chaotic Codes for Optical Code Division Multiple Access Using Simulated Annealing Algorithm |
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| YIN Xiao-li,YU Chong-xiu,ZHANG Qi,XIN Xiang-jun,LIU Hui-shi,ZHANG Yin,SHI An-qi.Selecting of Chaotic Codes for Optical Code Division Multiple Access Using Simulated Annealing Algorithm[J].Journal of Beijing University of Posts and Telecommunications,2011,34(1):60-63. |
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| Authors: | YIN Xiao-li YU Chong-xiu ZHANG Qi XIN Xiang-jun LIU Hui-shi ZHANG Yin SHI An-qi |
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| Affiliation: | YIN Xiao-li1,YU Chong-xiu2,ZHANG Qi1,XIN Xiang-jun1,LIU Hui-shi2,ZHANG Yin1,SHI An-qi1(1.School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China,2.Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications),Ministry of Education,China) |
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| Abstract: | To get a better bit error rate (BER) performance of the optical code division multiple access (OCDMA) systems, an OCDMA scheme using 3rd order Chebyshev chaotic sequence is proposed based on the study of the principle of phase shifted superstructure fiber Bragg grating encoder/decoder. The code selecting method using simulated annealing algorithm is investigated. Simulations indicate that the BER performance of the system with chaotic sequences is better than that with Gold sequences, and the proposed code selecting method is effective. |
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| Keywords: | optical code division multiple access superstructure fiber Bragg grating chaotic sequences simulated annealing algorithm |
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