光码分多址(OCDMA)系统误码性能研究  

The study of the bit error performance of the multiple-users FO-CDMA communication system

作　　者：张宝富[1] 万谦[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210016

出　　处：《通信学报》2003年第5期79-84,共6页Journal on Communications

摘　　要：对光码分多址(OCDMA)系统的误码性能进行了研究。在对OCDMA采用的光接收机及噪声讨论的基础上,综合考虑用户间的多址干扰和光接收机噪声,首次推导了计算系统误码率上限的公式,并给出了相应的曲线,得出了对实际系统设计具有指导意义的结果。分析表明:多用户光纤CDMA系统是一个具有弹性容量的系统;当用户较少时系统误码性能主要受其接收机噪声的影响,用户较多时则主要由用户间的多址干扰决定。The bit error performance of the multiple-users OCDMA system is theoretically studied in this paper. Considering the receiver noise and users?multiple-access disturbing, the formulas of calculating the upper bound on the bit error rate has first been deduced, and the corresponding curves have been given. The results with referential value to the practical system designing show that the multiple-users OCDMA system has stretchy capacity and the system抯 bit error performance is determined by the receiver抯 noise when there are a little users and it is determined by the users?multiple-access disturbing when there are many users.

关 键 词：光码分多址 OCDMA 光接收机噪声 误码率 多址干扰 光正交码 

分 类 号：TN929.11[电子电信—通信与信息系统]