一种异步OCDMA系统二维码的设计和分析  

Design and analysis of a two-dimension code for asynchronous OCDMA systems

作　　者：李永萍[1] 张兴周[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《光通信研究》2010年第6期61-63,共3页Study on Optical Communications

摘　　要：异步光码分多址(OCDMA)系统是近年来关注的热点,但对适用于该系统的二维码字的研究还比较少。文章分析了扩展同余码(EQC)在异步OCDMA系统中的相关性,并进一步提出一种用于异步OCDMA系统的二维时间/频率组合码的构造方法。分析该地址码的自相关和互相关特性的结果表明:由EQC和光正交码(OOC)构成的二维时间/频率组合码EQC/OOC具有良好的自相关和互相关特性。The asynchronous OCDMA system is a hot spot attracting much attention in recent years,but the study on the two-dimension code words appropriate for this system remains to be a blank.In this paper,the correlation of the Extended Quadratic Congruence（EQC） code in the system is analyzed and the method for constructing a two-dimensional time/frequency code for the system is given.The analysis of the autocorrelation and cross-correlation characteristics of the address code shows that the new code constructed with EQC and OOC has good autocorrelation and cross-correlation characteristics.

关 键 词：异步 光码分多址 扩展同余码 光正交码 

分 类 号：TN914.5[电子电信—通信与信息系统]