| 一种基于素数码和单重合序列的二维光正交码 |
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| 引用本文： | 吉建华,田晶晶,徐铭,杨淑雯.一种基于素数码和单重合序列的二维光正交码[J].光电子．激光,2007,18(4):436-438. |
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| 作者姓名： | 吉建华 田晶晶 徐铭 杨淑雯 |
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| 作者单位： | 深圳大学新技术研究中心,广东,深圳,518060 |
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| 摘 要： | 以素数码(PC)作为时间扩频伪随机序列,以单重合序列(OCS)作为波长跳频伪随机序列,构造了一种新的二维光正交码(OOC)PC/OCS,并分析了码字的互相关性能.与素数跳频码PC/PC相比,PC/OCS的波长数并不局限于素数,可以是任意整数,不仅构造灵活,而且可充分利用多波长光码分多址(MW OCDMA)系统的有效波长数.当系统的有效波长数为大于某个素数的整数时,PC/OCS不仅码字容量大于PC/PC,而且互相关性能也有所改善,降低了MW OCDMA系统的误码率(BER).
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| 关 键 词： | 光码分多址(OCDMA) 二维光正交码(OOC) 素数码(PC) 单重合序列 |
| 文章编号： | 1005-0086（2007）04-0436-03 |
| 修稿时间： | 2006-06-08 |
A New Family of 2-D Optical Orthogonal Codes Based on Prime Code and One-coincidence Sequence |
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| JI Jian-hu,TIAN Jing-jing,XU Ming,YANG Shu-wen.A New Family of 2-D Optical Orthogonal Codes Based on Prime Code and One-coincidence Sequence[J].Journal of Optoelectronics·laser,2007,18(4):436-438. |
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| Authors: | JI Jian-hu TIAN Jing-jing XU Ming YANG Shu-wen |
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| Affiliation: | Advanced Technology Research Center of Shenzhen University,Shenzhen 518060,China |
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| Abstract: | A new 2-D optical orthogonal codes(OOC) named PC/OCS is constructed by using prime code(PC) for time spreading and onecoincidence sequence(OCS) for wavelength hopping.Cross-correlation performance of PC/OCS is analyzed.Compared with PC/PC,the number of wavelengths for PC/OCS is not limited to a prime number.PC/OCS can be constructed flexibly,and also can use available wavelengths adequately.When the number of wavelengths is larger than prime number,PC/OCS not only has large code cardinality,but also has better cross-correlation performance.Theoretical analysis shows that PC/OCS can reduce the bit error rate(BER) of MW OCDMA networks. |
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| Keywords: | optical code division multiple access(OCDMA) 2-D optical orthogonal codes(OOC) prime code(PC) one-coincidence sequence |
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