一种新的二维光正交码的设计及性能分析  

A novel design of two-dimensional optical orthogonal code and its performance analysis

作　　者：管成龙[1] 朱杏华[1] 李传起[1,2] 张媛[1] 周园园[1] 

机构地区：[1]南京信息工程大学数理学院,江苏南京210044 [2]广西师范大学电子工程学院,广西桂林541004

出　　处：《光通信研究》2011年第1期65-67,共3页Study on Optical Communications

基　　金：江苏省自然科学基金资助项目(BK2008437);江苏省高校自然科学基金资助项目(07KJB510066)

摘　　要：以修正二次素数码(MSPC)作为扩时序列,单重合序列(OCS)作为跳频序列,构造了新的二维地址码MSPC/OCS。分析MSPC/OCS的码字性能,得出了互相关均值,并对该码字进行了仿真比较。结果表明,当码重、任意两个相邻"切普"波长的最小间隔一定时,增加跳频码片数,不仅能降低MSPC/OCS码的误码率,还能增加码字容量;同素数码(PC)/OCS码相比,MSPC/OCS码的码字性能更加优良。A new two-dimensional optical orthogonal code,i.e.MSPC/OCS is constructed with Modified Square Prime Code（MSPC） as time spreading sequence and One-Coincidence Sequence（OCS） as wavelength hopping sequence.The cross-correlative mean value is deduced by analyzing its performance and the code is theoretically analyzed,simulated and compared.The results show that when the code weight and the minimum gap between the two adjacent chip wavelengths are constant,the increase of the number of hopping codes does not only reduce the BER of MSPC/OCS,but also increase the code word capacity.Compared with PC/OCS,MSPC /OCS is better in performance.

关 键 词：光码分多址 修正二次素数码 单重合序列 误码率 

分 类 号：TN921.2[电子电信—通信与信息系统]