OCDMA系统中二维变重光正交码的设计及性能分析

J4 ›› 2011, Vol. 28 ›› Issue (5): 635-640.

• 光通信 • 上一篇

OCDMA系统中二维变重光正交码的设计及性能分析

李传起^1,2,周园园²,张媛²,陈晖²,管成龙²

1 广西师范大学电子工程学院，广西桂林 541012;
2 南京信息工程大学数理学院，江苏南京 210044

收稿日期:2010-10-11 修回日期:2010-11-04 出版日期:2011-09-28 发布日期:2011-08-18
通讯作者: 李传起(1964-) 安徽六安人，教授，主要从事物理学及光通信技术领域的科研和教学工作，主要科研方向为光纤通信OCDMA网络技术。 E-mail:lcq@mailbox.gxnu.edu.cn
基金资助:
国家自然科学基金（60977051）、江苏省自然科学基金(KB2008437)、江苏省高校自然科学基金(07KJB510066)资助项目

Acquirement and performance analysis of 2D-VWOOC for optical CDMA system

LI Chuan-qi^1,2, ZHOU Yuan-yuan², ZHANG Yuan², CHEN Hui²,GUAN Cheng-long²

1 College of Electronic Engineering, Guangxi Normal University，Guilin 541012, China;
2 College of Mathematics and Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China

Received:2010-10-11 Revised:2010-11-04 Published:2011-09-28 Online:2011-08-18

摘要/Abstract

摘要：

以单重合序列作为波长跳频序列，严格变重光正交码作为时间扩频序列，构造一种新的跳频/扩时二维变重光正交码。对所构造二维码的自相关和互相关性能进行了详细地分析，得出互相关均值的表达式，并对该二维地址码的多址干扰误码率进行了仿真比较和理论分析。结果表明，确定严格变重光正交码的参数和单重合序列的长度，增加波长数会增加码字容量并会降低系统的误码率；确定单重合序列的参数和严格变重光正交码的码重和码字个数，增加码长将降低系统的误码率。

关键词: 光通信, 二维变重光正交码, 严格变重光正交码, 单重合序列

Abstract:

A new family, named OCS/SVW-OOC, of two-dimension wavelength –hopping / time-spreading variable-weight optical orthogonal code (VW-OOC) is constructed, based on one-coincide sequence (OCS) for wavelength hopping and strict VW-OOC for time spreading. Auto-correlation and cross-correlation performances of OCS/SVW-OOC are analyzed in detail and the mean value of cross-correlation is reduced. The bit error ratio (BER) for the 2D code has been simulated and compared. The simulation results show that given the parameter of SVW-OOC and the length of OCS, not only the BER of OCS/SVW-OOC is reduced, but also the capacity is enlarged, when the number of wavelengths is increased. And for the given parameters of OCS, code weight and number of SVW-OOC, the BER of OCS/SVW-OOC is reduced when the code length of SVW-OOC is added.

Key words: optical communication, 2D-VWOOC, SVW-OOC, OCS

中图分类号:

TN921.2

李传起周园园张媛陈晖管成龙. OCDMA系统中二维变重光正交码的设计及性能分析[J]. J4, 2011, 28(5): 635-640.

LI Chuan-qi, ZHOU Yuan-yuan, ZHANG Yuan, CHEN Hui,GUAN Cheng-long. Acquirement and performance analysis of 2D-VWOOC for optical CDMA system[J]. J4, 2011, 28(5): 635-640.

参考文献

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OCDMA系统中二维变重光正交码的设计及性能分析

Acquirement and performance analysis of 2D-VWOOC for optical CDMA system

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