| 根据信道特性优化OCDMA码片波形 |
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| 引用本文： | 马君显,杜春雷,杨淑雯.根据信道特性优化OCDMA码片波形[J].深圳大学学报(理工版),2003,20(3):47-51. |
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| 作者姓名： | 马君显 杜春雷 杨淑雯 |
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| 作者单位： | 1. 深圳大学信息工程学院,深圳,518060
2. 中国科学院微细加工光学技术国家重点实验室,成都,610209 |
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| 基金项目： | 国家自然科学基金(69982006及6013240)，国家微光学加工技术重点实验室资助项目 |
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| 摘 要： | 提出一种根据信道特性优化码片波形的方法.该方法将全光信道视为滤波器,用回转椭球函数为基元函数展开表达滤波器的透过率函数,以功率谱密度(PSD)均匀为条件旨在取得最小干扰.采用Lagrange乘子法,求取用回转椭球波函数线性叠加表达的码片最优波形的解析表达.给出了系统模型及推导步骤,用K-L展开讨论其适用范围.
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| 关 键 词： | OCDMA 码片波形优化 功率谱密度 回转椭球波函数 Lagrange乘子 |
| 文章编号： | 1000-2618(2003)03-0047-05 |
| 修稿时间： | 2003年6月26日 |
OCDMA Chip Waveform Design for Minimal Interference |
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| MA Jun-xian,DU Chun-lei and YANG Shu-wen
College of Information Engineering Shenzhen University Shenzhen P. R. China
The State Key Lab of Optical Technologies for Micro-fabrication,CAS Chengdu P. R. China.OCDMA Chip Waveform Design for Minimal Interference[J].Journal of Shenzhen University(Science &engineering),2003,20(3):47-51. |
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| Authors: | MA Jun-xian DU Chun-lei and YANG Shu-wen
College of Information Engineering Shenzhen University Shenzhen P R China
The State Key Lab of Optical Technologies for Micro-fabrication CAS Chengdu P R China |
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| Affiliation: | MA Jun-xian,DU Chun-lei and YANG Shu-wen
1) College of Information Engineering Shenzhen University Shenzhen 518060 P. R. China
2) The State Key Lab of Optical Technologies for Micro-fabrication,CAS Chengdu 610209 P. R. China |
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| Abstract: | A novel algorithm for OCDMA chip waveform with minimal interference under the bandwidth , energy constraints is demonstrated. The technique of Lagrange multiplier is used to optimize the mean squared error of carrier signal in an optical channel. The carrier signal and its impulse response function are expanded on the basis of the prolate spheroidal wave functions ( PSWF). The applicability of the algorithm is shown based on the relationship between the Karhunen-Loeve transform and PSWF. |
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| Keywords: | OCDMA chips waveform optimization power spectrum density the prolate spheroidal wave functions lagrange multiplier |
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