广西师范大学学报（自然科学版） ›› 2016, Vol. 34 ›› Issue (2): 28-34.doi: 10.16088/j.issn.1001-6600.2016.02.005

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SAC-OCDMA系统中二维地址码设计及性能研究

张秀容1, 李传起1, 陆叶1, 张东闯1, 孔一卜1, 付学谦2, 范庆斌1   

  1. 1.广西师范大学电子工程学院,光电子与光通信实验室,广西桂林541004;
    2.清华大学电机系,北京100084
  • 收稿日期:2016-01-18 出版日期:2016-06-25 发布日期:2018-09-14
  • 通讯作者: 李传起(1964—),男,安徽六安人,广西师范大学教授,博士。 E-mail:lcq@mailbox.gxnu.edu.cn
  • 基金资助:
    广西科学研究与技术开发计划课题(桂科攻1598007-12);广西师范大学青年基金资助项目(17A4);广西研究生教育创新计划资助项目(YCSZ2015097)

A Novel Two-dimensional Code Design and Performance Analysisfor SAC-OCDMA System

ZHANG Xiurong1, LI Chuanqi1, LU Ye1, ZHANG Dongchuang1, KONG Yibu1, FU Xueqian2, FAN Qingbin1   

  1. 1. College of Electronic Engineering, Guangxi Normal University, Guilin Guangxi 541004;
    2. Department of Electrical Engineering,Tsinghua University,Beijing 100084
  • Received:2016-01-18 Online:2016-06-25 Published:2018-09-14

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摘要： 本文基于一维的多对角线码(MD)和循环移动的单位矩阵构造一种新的适合光谱幅度编码(SAC)的光码分多址(OCDMA)系统的互相关为零的二维光谱/空间码,称为循环移位多对角线码(2D-CSMD)。考虑了实际传输系统中由相位引起的强度噪声(PIIN)、热燥声和散弹噪声的影响,得出了信噪比以及误码率的公式,并将其在SAC-OCDMA系统进行误码率性能分析与仿真。理论分析表明:2D-CSMD码与2D-MD码在构造同等大小的矩阵时,2D-CSMD码容量更大,在SAC-OCDMA系统中误码率更低。仿真结果表明: 2D-CSMD码与2D-MD码相比,2D-CSMD码误码性能更为优良,并得到较为理想的眼图。

关键词: SAC-OCDMA系统, 循环移位多对角线码, 循环移动单位矩阵, 误码率

Abstract: Based on multi-diagonal(MD)code and the cyclic-shift unit matrix, a new two-dimensional spectral/spatial code family with zero cross correlation named two dimensional cyclic shift multi-diagonal(2D-CSMD)code is proposed for Spectral Amplitude Code-Optical Code Division Multiple Access(SAC-OCDMA). By taking into account the effects of phase-induced intensity noise (PIIN), hot noise and thermal noise, the formula of signal to noise ratio (SNR) and bit error ratio (BER) are deduced and the BER performances of SAC-OCDMA system is analyzed and simulated. Theoretical analysis show that 2D-CSMD code family has a larger code capacity and a lower BER in SAC-OCDMA system compared with 2D-MD code family with the same size matrix. The simulations show that 2D-CSMD code has a better performance than 2D-MD code under the same conditions, and an ideal eye diagram of 2D-CSMD in the simulation is generated.

Key words: SAC-OCDMA system, 2D-CSMD code, cyclic-shift unit matrix, BER

中图分类号: 

  • TN929.11
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