基于频分信道双极性光码分多址实现研究  

Investigation on Realization of Optical CDMA using Division-frequency Channel and Bipolar Codes

作　　者：张崇富[1] 邱昆[1] 安晓强[1] 

机构地区：[1]电子科技大学宽带光纤传输与通信技术国家重点实验室,成都610054

出　　处：《光子学报》2004年第3期329-332,共4页Acta Photonica Sinica

基　　金：国家863计划资助项目(2001AA12 2 0 71)

摘　　要：提出了采用光纤法 玻滤波器与电吸收调制器实现频域幅度编解码的频分信道双极性OCDMA系统方案 推导了系统模型理论公式 ,分析了系统信噪比对接收端探测误差、不同编解码系统和传输信道对系统性能的影响 仿真结果表明 :比较高的信噪比有利提高接收端探测效果 ;系统容纳用户能力增强 ;系统有良好的相关特性 ;2 0km的SMF搭配 30 0m的DCF传输系统明显优于2The performance of optical CDMA system using divisi on-frequency channel and bipolar codes is studied, and Optical CDMA system, based on FFPF and EAM, is presented ,and theory formula of the system is deduced in the letter. The simulation result demonstrates that in the optical CDMA systems, higher SNR will lead to better performance of detection at the receiver of the system, improve the capacitance of the system, and excellent correlation can be achieved. The transmission performance of the system on 20 Km SMF and 300 m DCF is better than the system on 20 Km DSF, and the system adapts to communication system for different traffics, based on multi-bit rate.

关 键 词：光码分多址 频分信道 双极性码 光纤法-玻滤波器 幅度掩模板 

分 类 号：TN929.11[电子电信—通信与信息系统]