| 一种新的双极性完全互补光码分多址系统设计及性能分析 |
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| 引用本文： | 陈雷,贾志成,郭艳菊,李琦. 一种新的双极性完全互补光码分多址系统设计及性能分析[J]. 河北工业大学学报, 2007, 36(6): 23-27 |
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| 作者姓名： | 陈雷 贾志成 郭艳菊 李琦 |
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| 作者单位： | 1. 天津商业大学,信息工程学院,天津,3001342
2. 河北工业大学,信息工程学院,天津,300130 |
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| 基金项目： | 国家自然科学基金资助(60502016) |
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| 摘 要： | 基带双极性光码分多址(OCDMA)系统,采用码的极性转换思想,实现在单极性信道中传输双极性码.提出了一种采用双极性完全互补码的非相干OCDMA系统模型及编解码方案,研究了完全互补码在系统中的应用以及对OCDMA系统性能的影响.分析比较了基于双极性完全互补码的OCDMA系统相对于基于m序列的OCDMA系统的性能优势.结果表明,完全互补码具有理想的自相关和互相关特性,适合应用于双极性光码分多址通信系统,可以有效降低OCDMA系统中的多址干扰(MAI),提高通信质量.
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| 关 键 词： | 光码分多址 双极性码 完全互补码 自相关性 互相关性 |
| 文章编号： | 1007-2373（2007）06-0023-05 |
| 收稿时间： | 2007-03-27 |
| 修稿时间： | 2007-03-27 |
Design of a New OCDMA System Based on Bipolar Complete Complement Codes and Analysis for the Performance of the System |
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| CHEN Lei,JIA Zhi-cheng,GUO Yan-ju,LI Qi. Design of a New OCDMA System Based on Bipolar Complete Complement Codes and Analysis for the Performance of the System[J]. Journal of Hebei University of Technology, 2007, 36(6): 23-27 |
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| Authors: | CHEN Lei JIA Zhi-cheng GUO Yan-ju LI Qi |
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| Abstract: | The base-band bipolar optical code division multiple access (OCDMA) system is introduced, with transform of unipolar-bipolar and bipolar-unipolar, transmission of signal with bipolar codes is realized through unipolar medium. An OCDMA system model and coding-decoding project based on bipolar complete complement codes are proposed. The application and performance of the complete complement codes in this system are analyzed. The advantages of OCDMA system based on complete complement codesrelative toOCDMA system based on m sequences are also analyzed. As a result, complete complementcodes are fit forusing in bipolar OCDMA system due totheir idealauto-correlationandcross-correlation properties. The MAI in OCDMA system can be reduced effectively and the communication quality can be improved. |
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| Keywords: | optical code division multiple access bipolar codes complete complementcodes auto-correlation property cross-correlation property |
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